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Bệnh lý SLAP và gân cơ nhị đầu

Superior labral (SLAP) tears and disorders of the long head of biceps — assessment and treatment.

Updated Jun 2026
Hình minh họa một cầu thủ bóng chày đang trong tư thế ném bóng, nhăn mặt vì đau ở vai ném.
Các vấn đề liên quan đến tổn thương SLAP và chỏm gân cơ nhị đầu thường gây đau sâu ở khớp vai trong các hoạt động ném bóng trên đầu và các hoạt động khác liên quan đến nâng tay trên đầu. Kieran Hirpara 4.0

Trang này được dịch bằng máy và chưa được bác sĩ kiểm tra. Bản tiếng Anh là bản chính thức.

Những gì bạn đang cảm nhận

Bạn có thể cảm thấy đau ở phía trước vai. Cơn đau này thường nằm sâu bên trong khớp. Nó cũng có thể lan xuống cánh tay trên. Nhiều người mô tả nó là một cơn đau âm ỉ trở nên sắc nhọn khi vận động. Bạn có thể nhận thấy cơn đau trở nên tồi tệ hơn khi nâng cánh tay lên trên đầu. Việc với lấy đồ vật trên kệ cao có thể trở nên khó khăn. Ném bóng hoặc chơi các môn thể thao dùng vợt có thể kích hoạt sự khó chịu sắc nhọn.

Vai của bạn có thể cảm thấy không ổn định hoặc như thể nó sẽ bị sập. Một số bệnh nhân báo cáo cảm giác bị kẹt hoặc khóa. Điều này xảy ra khi mô bị rách bị kẹt trong khớp. Bạn có thể nghe thấy tiếng kêu lách cách hoặc bụp khi di chuyển cánh tay. Các triệu chứng này thường bắt chước các vấn đề về vai khác. Cơn đau của bạn có thể cảm thấy như viêm gân quay hoặc mất ổn định chung. Cảm thấy cứng khớp là điều phổ biến, đặc biệt là vào buổi sáng.

Các nhiệm vụ hàng ngày trở nên khó khăn khi bạn cần sử dụng cả hai tay. Với ra sau lưng để cài áo ngực có thể gây đau. Việc nhét áo vào quần đòi hỏi sự vặn vẹo khó khăn làm trầm trọng thêm vết rách. Ngủ nghiêng về phía bị ảnh hưởng thường là không thể do áp lực và cơn đau. Bạn có thể thức dậy thường xuyên vì sự khó chịu.

Cơn đau thường bùng phát sau khi hoạt động. Nó có thể kéo dài vào buổi tối hoặc khiến bạn mất ngủ vào ban đêm. Nghỉ ngơi thường giúp giảm cơn đau sắc nhọn ngay lập tức, nhưng sự cứng khớp sẽ quay trở lại khi không vận động. Bạn có thể thấy mình tránh sử dụng cánh tay để bảo vệ nó. Điều này có thể dẫn đến suy yếu theo thời gian.

Điều quan trọng là phải biết rằng các bài kiểm tra khám thực thể đơn thuần không thể xác nhận chẩn đoán này. Bác sĩ phẫu thuật của bạn sẽ xem xét tiền sử và hình ảnh học để hiểu những gì bạn đang cảm nhận. Nếu bạn có vôi hóa ở gân cơ nhị đầu, nó có thể liên quan đến vết rách này. Hiểu rõ các triệu chứng cụ thể của bạn giúp bác sĩ phẫu thuật chọn lựa con đường phù hợp nhất cho bạn. Dù bạn cần sửa chữa hay cố định gân (relocating the tendon), mục tiêu là giảm bớt cơn đau này và khôi phục chức năng.

Những gì thực sự đang xảy ra

Vai của bạn là một khớp cầu và hốc. Hốc được lót bởi một vòng sụn gọi là môi sụn (labrum). Hãy nghĩ về vòng này như một vòng đệm hoặc bộ giảm xóc. Nó giữ cho đầu xương tròn nằm chính giữa và ổn định. Dây chằng cơ nhị đầu bám vào phần trên của vòng này. Nó hoạt động như một sợi dây giúp nâng cánh tay của bạn lên.

Vết rách SLAP có nghĩa là điểm bám này đã bị kéo tách ra hoặc rách. Chữ SLAP viết tắt của Superior Labrum Anterior to Posterior (Môi sụn trên, trước đến sau). Điều này mô tả vị trí và hướng của vết rách. Nó xảy ra ở phần trên của hốc khớp.

Chấn thương này có thể cảm thấy giống nhiều vấn đề khác nhau. Nó thường bắt chước các triệu chứng của chèn ép hoặc các vấn đề ở nhóm cơ xoay vai. Nó cũng có thể cảm thấy như sự mất ổn định của vai. Điều này khiến việc chẩn đoán trở nên khó khăn. Đôi khi, rất khó để xác định chính xác vấn đề chỉ dựa trên các triệu chứng của bạn.

Khi vết rách này xảy ra, cơ học của vai bạn thay đổi. Đầu xương tròn có thể trượt quá nhiều trong hốc. Chuyển động dư thừa này gây thêm căng thẳng cho dây chằng cơ nhị đầu. Nó cũng làm tăng áp lực bên trong khớp. Theo thời gian, tải trọng dư thừa này có thể làm mòn các bề mặt khớp.

Cơ thể bạn cố gắng thích nghi với sự mất ổn định này. Các cơ của bạn có thể co bóp vào những thời điểm khác với bình thường. Ví dụ, một cơ gọi là cơ răng trước (serratus anterior) có thể kích hoạt sớm hơn. Đây có thể là một chiến lược bảo vệ để ổn định xương bả vai và khớp. Tuy nhiên, sự thay đổi về thời gian này có thể cảm thấy bất tiện hoặc yếu đi.

Những thay đổi này giải thích cho cơn đau và hạn chế vận động của bạn. Vết rách làm gián đoạn sự trượt mượt mà của khớp. Dây chằng cơ nhị đầu bị kéo hoặc căng trong khi vận động. Điều này gây ra cơn đau nhói, đặc biệt khi nâng hoặc với tay lên cao. Nó cũng có thể gây ra cảm giác kẹt khớp.

Hiểu được điều này giúp bác sĩ phẫu thuật lựa chọn phương pháp điều trị phù hợp. Đối với một số bệnh nhân, việc sửa chữa môi sụn là tốt nhất. Đối với những người khác, việc di chuyển điểm bám của dây chằng cơ nhị đầu (tenodesis) hiệu quả hơn. Quyết định này phụ thuộc vào tuổi tác, mức độ hoạt động và loại vết rách cụ thể của bạn. Bác sĩ phẫu thuật sẽ hướng dẫn bạn lựa chọn phương án giúp khôi phục sự ổn định và giảm đau.

Những gì chúng tôi có thể làm về vấn đề này

Bác sĩ phẫu thuật của bạn trước tiên sẽ khuyến nghị điều trị không phẫu thuật với một phác đồ phù hợp. Phương pháp này mang lại kết quả lâm sàng thỏa đáng ở bệnh nhân trung niên bị tổn thương SLAP có triệu chứng. Bạn nên cân nhắc bước này trước khi khuyến nghị điều trị phẫu thuật. Mục tiêu là giảm đau và khôi phục tầm vận động thông qua các bài tập nhắm mục tiêu. Một mô hình tiên đoán lâm sàng có thể giúp dự đoán sự thất bại của phương pháp quản lý này với độ chính xác ở mức trung bình, dựa trên các triệu chứng cụ thể và các phương pháp điều trị trước đó của bạn. Tuy nhiên, quyết định phẫu thuật không nên được đưa ra chỉ dựa trên các bài kiểm tra đánh giá lâm sàng. Bạn cũng phải xem xét mức độ đau, mức độ hoạt động trên đầu và phản ứng của bạn với các phương pháp điều trị không phẫu thuật trước đó.

Nếu tình trạng đau vẫn tiếp diễn, quản lý y tế có thể bao gồm thuốc giảm đau hoặc thuốc chống viêm. Trong một số trường hợp, bác sĩ phẫu thuật của bạn có thể xem xét các phương pháp tiêm như cortisone, axit hyaluronic hoặc PRP. Các lựa chọn này nhằm mục đích giảm viêm và cung cấp sự giảm đau tạm thời. Nếu nghi ngờ có viêm gân calcific của đầu dài cơ nhị đầu tại điểm bám gốc, có thể hữu ích khi xem xét sự hiện diện của tổn thương SLAP đồng thời và cách quản lý nó. Lưu ý rằng tỷ lệ hiện mắc cao của rách sụn môi trên được chẩn đoán bằng MRI ở bệnh nhân trung niên có khớp vai không triệu chứng nhấn mạnh nhu cầu về sự hỗ trợ của phán đoán lâm sàng khi đưa ra quyết định điều trị. Không dựa vào hình ảnh học một mình; bác sĩ phẫu thuật của bạn sẽ đối chiếu các kết quả với các triệu chứng lâm sàng của bạn.

Khi chăm sóc bảo tồn đã đạt đến giới hạn, phẫu thuật được xem xét. Điều này thường được thúc đẩy bởi sự hiện diện của đau và mong muốn quay trở lại hoạt động của bạn. Đối với bệnh nhân dưới 30 tuổi bị rách SLAP cô lập có triệu chứng, cắt bỏ gân cơ nhị đầu dưới cơ ngực (subpectoral biceps tenodesis) mở có thể là một lựa chọn thay thế đáng tin cậy so với sửa chữa nội soi. Cắt bỏ gân cơ nhị đầu nguyên phát cung cấp kết quả chức năng cải thiện ở bệnh nhân dưới 30 tuổi năng động so với sửa chữa SLAP ở thời điểm theo dõi tối thiểu 2 năm. Đây cũng là một lựa chọn thay thế an toàn, hiệu quả và đơn giản về mặt kỹ thuật so với sửa chữa SLAP nguyên phát ở bệnh nhân bị rách SLAP loại II và IV. Ở nhóm dân số trẻ năng động, cắt bỏ gân cơ nhị đầu có thể tạo điều kiện thuận lợi cho việc quay trở lại hoạt động sớm hơn so với sửa chữa. Đối với sửa chữa SLAP loại II thất bại, cắt bỏ gân cơ nhị đầu dưới cơ ngực như một thủ thuật cứu hộ cho thấy kết quả cải thiện. Quyết định cuối cùng được đưa ra riêng lẻ với bệnh nhân, cân nhắc các lợi thế và bất lợi cụ thể.

Những điều cần biết

Vai của bạn có khả năng sẽ cảm thấy tốt hơn sau phẫu thuật, nhưng quá trình để đạt được chức năng hoàn toàn cần có thời gian. Hầu hết bệnh nhân thấy mức độ đau giảm đáng kể và sự cải thiện rõ rệt về khả năng hoạt động của vai. Bạn có thể mong đợi bác sĩ phẫu thuật thảo luận xem tenodesis gân cơ nhị đầu hay sửa chữa SLAP là lựa chọn phù hợp nhất cho bạn. Quyết định này phụ thuộc vào độ tuổi, mức độ hoạt động và đặc điểm cụ thể của vết rách.

Đối với những bệnh nhân dưới 30 tuổi và năng động, tenodesis gân cơ nhị đầu thường mang lại kết quả chức năng tốt hơn so với sửa chữa SLAP. Trong thủ thuật này, bác sĩ phẫu thuật sẽ di chuyển gân cơ nhị đầu đến một vị trí mới trên xương cánh tay trên. Phương pháp này an toàn, hiệu quả và có thể dự đoán được. Đây cũng là một lựa chọn đáng tin cậy nếu bạn đã từng thực hiện sửa chữa SLAP trước đó nhưng không lành vết thương. Ngay cả khi phẫu thuật ban đầu thất bại, việc sửa chữa này có thể khôi phục chức năng và giảm đau.

Nếu bạn là một vận động viên thi đấu các môn thể thao trên đầu, triển vọng của bạn nhìn chung là tích cực. Khoảng 81% bệnh nhân quay trở lại mức độ thi đấu trước đây sau khi thực hiện tenodesis gân cơ nhị đầu dưới cơ ngực. Việc quay trở lại này thường diễn ra ở trung bình 4,1 tháng sau phẫu thuật. Bạn có thể mong đợi mức độ hài lòng cao và kết quả tốt nếu bạn được lựa chọn kỹ lưỡng cho thủ thuật. Bệnh nhân nữ cũng cho thấy kết quả tương đương với bệnh nhân nam về việc giảm đau, chức năng và khả năng quay trở lại thể thao sau thời gian theo dõi tối thiểu hai năm.

Nếu bạn chọn không phẫu thuật, hoặc nếu bạn trên 40 tuổi, xu hướng điều trị đang thay đổi. Đã có sự suy giảm trong các ca sửa chữa SLAP và gia tăng tenodesis gân cơ nhị đầu ở những bệnh nhân trên 40 tuổi. Trong khi một số người có thể quản lý mà không cần phẫu thuật, những người khác có thể phải đối mặt với tình trạng đau dai dẳng hoặc hạn chế chức năng. Các yếu tố nguy cơ dẫn đến nhu cầu phẫu thuật sửa chữa bao gồm tuổi trên 40, giới tính nữ, béo phì, hút thuốc hoặc viêm gân cơ nhị đầu.

Nhìn chung, triển vọng là đầy hứa hẹn. Bất kể bạn còn trẻ và năng động hay ở độ tuổi trung niên, các kỹ thuật hiện đại đều cung cấp những cách thức đáng tin cậy để kiểm soát các triệu chứng của bạn. Bác sĩ phẫu thuật sẽ giúp bạn cân nhắc giữa lợi ích của việc sớm quay trở lại hoạt động và thời gian lành thương cần thiết. Với việc chăm sóc thích hợp, hầu hết bệnh nhân đều khôi phục được khả năng sử dụng vai và quay trở lại các hoạt động mà họ yêu thích.

Khi nào cần gặp bác sĩ

Hãy yêu cầu đánh giá bởi chuyên gia nếu bạn có đau vai dai dẳng không cải thiện khi nghỉ ngơi. Hãy tìm kiếm sự chăm sóc y tế nếu bạn nhận thấy yếu cơ, mất ổn định, hoặc nếu vai bị khóa hoặc đột ngột mất sức. Hãy gặp bác sĩ đa khoa nếu các triệu chứng ảnh hưởng đến giấc ngủ hoặc công việc của bạn. Sự gia tăng đột ngột của cơn đau cũng là lý do để tìm kiếm sự giúp đỡ. Hãy lưu ý rằng tổn thương SLAP có thể bắt chước các vấn đề khác như chèn ép hoặc các vấn đề ở nhóm cơ xoay vai. Chẩn đoán không nên chỉ dựa vào các xét nghiệm lâm sàng. Nếu viêm gân vôi hóa được nghi ngờ, bác sĩ phẫu thuật sẽ kiểm tra xem có đồng thời tổn thương SLAP hay không. Đánh giá sớm giúp xác định xem các thủ thuật như cố định gân cơ nhị đầu có phù hợp với chấn thương cụ thể của bạn hay không.


Evidence & references

Overview

  • Both arthroscopic repair and biceps tenotomy and tenodesis interventions had benefits in type II SLAP lesions [1].
  • Biceps tenodesis is a safe, effective, and technically straightforward alternative to primary SLAP repair in patients with type II and IV SLAP tears [4].
  • SLAP repairs are generally favored in younger, active patients [6].
  • Treating the biceps is preferred in lower-demand patients aged >30 years [6].
  • Biceps tenodesis has been increasingly used for the management of SLAP lesions [7].
  • Recent studies report high rates of return to sport, high satisfaction, and good to excellent patient-reported outcomes with biceps tenodesis in carefully selected athletes [7].
  • SLAP repair and biceps tenodesis both present viable treatment options but come with specific advantages and disadvantages [8].
  • The decision between SLAP repair and biceps tenodesis is ultimately made individually with the patient [8].
  • Primary subpectoral open biceps tenodesis for SLAP tears or pathology of the long head of the biceps tendon provides significant improvement in shoulder outcomes [9].
  • Primary subpectoral open biceps tenodesis for SLAP tears or pathology of the long head of the biceps tendon provides a reliable return to activity level with low risk for complications [9].
  • Biceps tenodesis is a predictable, safe, and effective treatment for failed arthroscopic SLAP tears at a minimum 2-year follow-up [10].
  • Treatment of proximal biceps pathology is largely based on expert opinion and patient preferences rather than robust randomized evidence [20].
  • Primary biceps tenodesis offers increased effectiveness when compared with both primary SLAP repair and nonoperative treatment [24].
  • Primary biceps tenodesis has lower costs than primary SLAP repair [24].
  • The indications and technique of biceps tenodesis in the elite pitcher still need to be defined [26].
  • High-demand patients with biceps tendonitis in the setting of a SLAP lesion with labral instability who undergo combined tenodesis and labral repair have significantly worse outcomes than patients who undergo either isolated labral repair for type II SLAP tears or isolated biceps tenodesis for a SLAP tear and biceps tendonitis [44].

Anatomy & Pathophysiology

  • Understanding the function and pathology surrounding the teres minor is paramount in comprehensive management of patients with shoulder pathology [12].
  • In the context of rotator cuff disease, the etiology of anterior shoulder pain with macroscopic changes in the biceps tendon is related to the complex interaction of the tendon and surrounding soft tissues, rather than a single entity [17].
  • Biomechanical studies indicate that the long head of the biceps contributes to stability of the glenohumeral joint in all directions [28].
  • In vivo studies have not yet established the stabilizing effect of the long head of the biceps on the glenohumeral joint [28].
  • The physiologic load required for the long head of the biceps to stabilize the glenohumeral joint remains unknown [28].
  • The long head of the biceps has a pertinent biomechanical role in glenohumeral stability regardless of the condition of the superior labrum [32].
  • Validity for strength testing of the serratus anterior muscle is optimal with subjects in a seated position and the shoulder flexed at 90° in the scapular plane [33].
  • Treatment of scapular dyskinesis is directed at managing underlying causes and restoring normal scapular muscle activation patterns by kinetic chain–based rehabilitation protocols [35].
  • Both proposed superior labral reconstruction techniques increased the force needed for humeral head superior migration in the setting of a labral tear [36].
  • The long head of the biceps tendon serves as a source of local autograft with biological and biomechanical properties that aid outcomes of complex primary and revision shoulder surgery procedures [40].
  • Potential prognostic variables associated with final subscapularis strength remain elusive [42].
  • The ultimate load to failure and stiffness for unicortical button fixation and the compared method in proximal subpectoral biceps tenodesis were not different [43].

Classification

  • Arthroscopic repair and biceps tenotomy/tenodesis both provide benefits for type II SLAP lesions [1].
  • Calcific tendinitis of the long head of the biceps brachii at its origin may be associated with a concurrent SLAP lesion [2].
  • A positive subpectoral biceps test is associated with gross pathologic changes of the biceps in 93% of patients [3].
  • Biceps tenodesis is a safe, effective, and technically straightforward alternative to primary SLAP repair for type II and IV SLAP tears [4].
  • Biceps tenodesis yields consistent and reliable results for operative treatment in overhead athletes, whereas return to play after SLAP repair can be unpredictable [5].
  • SLAP repair and biceps tenodesis are both viable treatment options with specific advantages and disadvantages, with the decision made individually with the patient [8].
  • Appropriate treatment for biceps pathology, whether conservative or surgical, should be based on established pathology [11].
  • There is no single pattern of pain that distinguishes biceps conditions from other shoulder abnormalities [16].
  • In the context of rotator cuff disease, the etiology of anterior shoulder pain with macroscopic changes in the biceps tendon is related to the complex interaction of the tendon and surrounding soft tissues rather than a single entity [17].
  • Biceps tenodesis may be considered a valid primary or revision surgery for symptomatic type II SLAP tears due to no detrimental effect on glenohumeral stability [21].
  • Biceps tenodesis remains a reliable treatment for pathologic abnormality of the long head of the biceps [50].

Clinical Presentation

  • A positive subpectoral biceps test was associated with gross pathologic changes of the biceps in 93% of patients [3].
  • There is no single pattern of pain that distinguishes biceps conditions from other shoulder abnormalities [16].
  • In the context of rotator cuff disease, the etiology of anterior shoulder pain with macroscopic changes in the biceps tendon is related to the complex interaction of the tendon and surrounding soft tissues, rather than a single entity [17].
  • Diagnosis of long head biceps tendon and subscapularis pathology in association with shoulder rotator cuff pathology can be challenging due to limitations in MRI and arthroscopic visualization [22].
  • Surgeons should maintain a high level of suspicion and utilize specific techniques to prevent missing pathology when diagnosing long head biceps tendon and subscapularis pathology in association with shoulder rotator cuff pathology [22].
  • The concomitant presence of SLAP and pulley lesions is significantly rare, occurring in only about 10% of all patients with SLAP and pulley lesions [25].
  • If calcific tendinitis of the long head of the biceps brachii at its origin is suspected, it may be helpful to consider the presence of a concurrent SLAP lesion and its management [2].
  • A 10.1% incidence of subsequent surgery after isolated SLAP repair was identified, often related to an additional diagnosis [14].
  • Clinicians should consider other potential causes of shoulder pain when considering surgery for patients with SLAP lesions [14].

Investigations

  • A positive subpectoral biceps test was associated with gross pathologic changes of the biceps in 93% of patients [3].
  • There is no single pattern of pain that distinguishes biceps conditions from other shoulder abnormalities [16].
  • Biceps tendon pain in the absence of tears is associated with microscopic changes consistent with tendinopathy, which are often missed by MRI [46].
  • MRI and intraoperative assessment did not show significant structural abnormalities within the tendon despite significant histopathologic changes in patients with chronic long head biceps tendinopathy undergoing open subpectoral tenodesis [19].
  • Most abnormal MRI findings were not different in frequency between symptomatic and asymptomatic shoulders [47].
  • Bicipital groove morphology measured by MRI has no correlation to intra-articular biceps tendon pathology [48].
  • Preoperative MRI scans of the shoulder interpreted by orthopaedic surgeons with a systematic approach resulted in improved accuracy in diagnosing subscapularis tendon tears compared with previous studies [51].
  • Diagnosis of long head biceps tendon and subscapularis pathology in association with shoulder rotator cuff pathology can be challenging due to limitations in MRI and arthroscopic visualization [22].
  • In approximately 80% of intra-articular biceps tears evaluated, a 'hidden lesion' was observed going beyond the bicipital groove and extending to the distal extra-articular portion [55].
  • The myotendinous junction (MTJ) of the biceps begins further proximal than may be appreciated intraoperatively [56].
  • If calcific tendinitis of the long head of the biceps brachii at its origin is suspected, it may be helpful to consider the presence of a concurrent SLAP lesion [2].
  • Clinicians should consider other potential causes of shoulder pain when considering surgery for patients with SLAP lesions, as there is a 10.1% incidence of subsequent surgery after isolated SLAP repair often related to an additional diagnosis [14].

Treatment

Operative Management: SLAP Repair vs. Biceps Tenodesis/Tenotomy

  • Both arthroscopic repair and biceps tenotomy and tenodesis interventions had benefits in type II SLAP lesions [1].
  • Biceps tenodesis is a safe, effective, and technically straightforward alternative to primary SLAP repair in patients with type II and IV SLAP tears [4].
  • For operative treatment, biceps tenodesis has consistent and reliable results, whereas return to play after SLAP repair can be unpredictable [5].
  • SLAP repairs are generally favored in younger, active patients, whereas treating the biceps is preferred in lower-demand patients aged >30 years [6].
  • Biceps tenodesis has been increasingly used for the management of SLAP lesions, with recent studies reporting high rates of return to sport, high satisfaction, and good to excellent patient-reported outcomes in carefully selected athletes [7].
  • SLAP repair and biceps tenodesis both present viable treatment options but come with specific advantages and disadvantages, with the decision ultimately made individually with the patient [8].
  • Increased patient age correlates with the likelihood of treatment with biceps tenodesis or tenotomy versus SLAP repair [13].
  • Primary biceps tenodesis offers increased effectiveness when compared with both primary SLAP repair and nonoperative treatment and lower costs than primary SLAP repair [24].
  • The treatment option of biceps tenodesis is an appealing alternative to SLAP repair, but the indications and technique of biceps tenodesis in the elite pitcher still need to be defined [26].

Biceps Tenodesis vs. Tenotomy

  • Treatment of proximal biceps pathology is largely based on expert opinion and patient preferences rather than robust randomized evidence [20].
  • Patients undergoing treatment for LHBT or SLAP pathology with either biceps tenodesis or tenotomy can be expected to experience similar improvements in patient-reported and functional outcomes [23].
  • Patient age should not be used as the sole criterion when deciding between biceps tenotomy and tenodesis [49].

Subpectoral Biceps Tenodesis Outcomes

  • Primary subpectoral open biceps tenodesis for SLAP tears or pathology of the LHBT provides significant improvement in shoulder outcomes with a reliable return to activity level with low risk for complications [9].
  • Short-term follow-up of 20 procedures has not shown any failure of fixation or residual biceps discomfort [15].
  • Subpectoral biceps tenodesis utilizing a dual suture anchor technique is a treatment option for SLAP lesions, partial thickness tears, subluxation, and tenosynovitis of the long head of the biceps with high rates of postoperative patient satisfaction, a low failure rate, and improved outcome scores [31].
  • Biceps tenodesis is a predictable, safe, and effective treatment for failed arthroscopic SLAP tears at a minimum 2-year follow-up [10].
  • Although revision to subpectoral biceps tenodesis may be an effective strategy to address failed prior biceps surgery, the potential complication of persistent pain must be emphasized [54].

Nonoperative Management

  • Appropriate treatment for biceps pathology, whether conservative or surgical, should be based on established pathology [11].
  • Diagnosis and nonoperative management of long head of biceps tendon disorders are categorized as inflammation, instability, and rupture, requiring specific protocols [41].

Associated Pathology

  • If calcific tendinitis of the long head of the biceps brachii at its origin is suspected, it may be helpful to consider the presence of a concurrent SLAP lesion and its management [2].

Complications

  • A positive subpectoral biceps test was associated with gross pathologic changes of the biceps in 93% of patients [3].
  • The incidence of subsequent surgery after isolated arthroscopic SLAP repair is 10.1% [14].
  • Subsequent surgery after isolated SLAP repair is often related to an additional diagnosis [14].
  • Risk factors for revision surgery after SLAP repair include age >40 years [18].
  • Risk factors for revision surgery after SLAP repair include female sex [18].
  • Risk factors for revision surgery after SLAP repair include obesity [18].
  • Risk factors for revision surgery after SLAP repair include smoking [18].
  • Risk factors for revision surgery after SLAP repair include diagnosis of biceps tendinitis or long head of the biceps tearing [18].
  • Short-term follow-up of 20 procedures using an all-suture anchor fixation for subpectoral biceps tenodesis has not shown any failure of fixation [15].
  • Short-term follow-up of 20 procedures using an all-suture anchor fixation for subpectoral biceps tenodesis has not shown any residual biceps discomfort [15].
  • In patients with chronic long head biceps tendinopathy undergoing open subpectoral tenodesis, MRI and intraoperative assessment did not show significant structural abnormalities within the tendon despite significant histopathologic changes [19].

Recovery

  • Arthroscopic repair and biceps tenotomy/tenodesis both provide benefits for type II SLAP lesions [1].
  • Biceps tenodesis is a safe, effective, and technically straightforward alternative to primary SLAP repair for type II and IV SLAP tears [4].
  • Biceps tenodesis yields consistent and reliable results for operative treatment in overhead athletes, whereas return to play after SLAP repair can be unpredictable [5].
  • Biceps tenodesis is increasingly used for SLAP lesions, with recent studies reporting high rates of return to sport, high satisfaction, and good to excellent patient-reported outcomes in carefully selected athletes [7].
  • SLAP repair and biceps tenodesis are both viable treatment options with specific advantages and disadvantages, with the decision made individually with the patient [8].
  • Primary subpectoral open biceps tenodesis for SLAP tears or long head of the biceps pathology provides significant improvement in shoulder outcomes, reliable return to activity level, and low risk for complications [9].
  • Biceps tenodesis is a predictable, safe, and effective treatment for failed arthroscopic SLAP tears at a minimum 2-year follow-up [10].
  • Increased patient age correlates with the likelihood of treatment with biceps tenodesis or tenotomy versus SLAP repair [13].
  • There is a 10.1% incidence of subsequent surgery after isolated SLAP repair, often related to an additional diagnosis [14].
  • Short-term follow-up of 20 procedures using an all-suture anchor fixation for subpectoral biceps tenodesis showed no failure of fixation or residual biceps discomfort [15].
  • Risk factors for revision surgery after SLAP repair include age >40 years, female sex, obesity, smoking, and diagnosis of biceps tendinitis or long head of the biceps tearing [18].
  • Biceps tenodesis may be considered a valid primary or revision surgery for symptomatic type II SLAP tears due to no detrimental effect on glenohumeral stability [21].
  • Superior clinical outcomes are seen in nonsmokers, those with only 1 tendon affected, and those who undergo tenotomy instead of tenodesis for a damaged long head of biceps tendon [58].

Key Evidence

  • [L1] Both arthroscopic repair and biceps tenotomy and tenodesis interventions had benefits in type II SLAP lesions. [1] (10.1186/s13018-019-1096-y)
  • [L4] The authors conclude that if calcific tendinitis of the long head of the biceps brachii at its origin is suspected, it may be helpful to consider the presence of a concurrent SLAP lesion and its management. [2] (10.1007/s00167-007-0323-y)
  • [L3] A positive subpectoral biceps test was associated with gross pathologic changes of the biceps in 93% of patients. [3] (10.1016/j.arthro.2019.02.017)
  • [L4] Based on these results, biceps tenodesis is a safe, effective, and technically straightforward alternative to primary SLAP repair in patients with type II and IV SLAP tears. [4] (10.1177/0363546514540273)
  • [L5] For operative treatment, biceps tenodesis has consistent and reliable results, whereas return to play after SLAP repair can be unpredictable. [5] (10.1016/j.csm.2015.08.009)
  • [L5] SLAP repairs are generally favored in younger, active patients, whereas treating the biceps is preferred in lower-demand patients aged >30 years. [6] (10.1016/j.jse.2024.09.040)
  • [L5] Biceps tenodesis has been increasingly used for the management of SLAP lesions, with recent studies reporting high rates of return to sport, high satisfaction, and good to excellent patient-reported outcomes in carefully selected athletes. [7] (10.5435/jaaos-d-21-01199)
  • [L5] SLAP repair and biceps tenodesis both present viable treatment options but come with specific advantages and disadvantages, with the decision ultimately made individually with the patient. [8] (10.1016/j.arthro.2019.02.026)
  • [L4] Primary subpectoral open biceps tenodesis for SLAP tears or pathology of the LHBT provides significant improvement in shoulder outcomes with a reliable return to activity level with low risk for complications. [9] (10.1016/j.arthro.2019.06.035)
  • [L4] Biceps tenodesis is a predictable, safe, and effective treatment for failed arthroscopic SLAP tears at a minimum 2-year follow-up. [10] (10.1177/0363546513520122)
  • [Paper] The article outlines that appropriate treatment for biceps pathology, whether conservative or surgical, should be based on established pathology. [11] (10.1016/j.csm.2009.12.003)
  • [L5] Understanding the function and pathology surrounding the teres minor is paramount in comprehensive management of the patient with shoulder pathology. [12] (10.5435/jaaos-d-15-00258)
  • [L3] Increased patient age correlates with the likelihood of treatment with biceps tenodesis or tenotomy versus SLAP repair. [13] (10.1177/0363546514534939)
  • [L3] We identified a 10.1% incidence of subsequent surgery after isolated SLAP repair, often related to an additional diagnosis, suggesting that clinicians should consider other potential causes of shoulder pain when considering surgery for patients with SLAP lesions. [14] (10.1016/j.arthro.2016.01.053)
  • [L5] Short-term follow-up of 20 procedures has not shown any failure of fixation or residual biceps discomfort. [15] (10.1007/s00167-014-3348-z)
  • [L5] There is no single pattern of pain that distinguishes biceps conditions from other shoulder abnormalities. [16] (10.1016/j.csm.2015.08.004)
  • [L4] In the context of rotator cuff disease, the etiology of anterior shoulder pain with macroscopic changes in the biceps tendon is related to the complex interaction of the tendon and surrounding soft tissues, rather than a single entity. [17] (10.1016/j.jse.2008.05.044)
  • [L3] Risk factors for revision surgery after SLAP repair include age >40 years, female sex, obesity, smoking, and diagnosis of biceps tendinitis or long head of the biceps tearing. [18] (10.1177/0363546517691950)
  • [L4] In patients with chronic long head biceps tendinopathy who underwent open subpectoral tenodesis, MRI and intraoperative assessment did not show significant structural abnormalities within the tendon despite significant histopathologic changes. [19] (10.1016/j.arthro.2018.01.021)
  • [L5] Treatment of proximal biceps pathology is largely based on expert opinion and patient preferences rather than robust randomized evidence. [20] (10.1097/corr.0000000000002448)
  • [L5] Biceps tenodesis may be considered a valid primary or revision surgery for patients suffering from symptomatic type II SLAP tears due to no detrimental effect on glenohumeral stability. [21] (10.1016/j.jse.2013.07.036)
  • [L5] Diagnosis of long head biceps tendon and subscapularis pathology in association with shoulder rotator cuff pathology can be challenging due to limitations in MRI and arthroscopic visualization; surgeons should maintain a high level of suspicion and utilize specific techniques to prevent missing pathology. [22] (10.1016/j.arthro.2017.09.005)
  • [L1] Patients undergoing treatment for LHBT or SLAP pathology with either biceps tenodesis or tenotomy can be expected to experience similar improvements in patient-reported and functional outcomes. [23] (10.1016/j.jse.2020.11.012)
  • [L3] Primary biceps tenodesis offers increased effectiveness when compared with both primary SLAP repair and nonoperative treatment and lower costs than primary SLAP repair. [24] (10.1016/j.arthro.2018.01.029)
  • [L4] The concomitant presence of SLAP and pulley lesions is significantly rare, occurring in only about 10% of all patients with SLAP and pulley lesions. [25] (10.1016/j.arthro.2011.01.005)
  • [L5] The treatment option of biceps tenodesis is an appealing alternative to SLAP repair, but the indications and technique of biceps tenodesis in the elite pitcher still need to be defined. [26] (10.1016/j.arthro.2018.01.001)
  • [L5] Biomechanical studies indicate that the long head of the biceps contributes to stability of the glenohumeral joint in all directions, though in vivo studies have yet to establish this stabilizing effect and the physiologic load required remains unknown. [28] (10.1016/j.arthro.2010.10.014)
  • [L4] Subpectoral biceps tenodesis utilizing a dual suture anchor technique is a treatment option for SLAP lesions, partial thickness tears, subluxation, and tenosynovitis of the long head of the biceps with high rates of postoperative patient satisfaction, a low failure rate, and improved outcome scores. [31] (10.1007/s00402-017-2810-z)
  • [L5] The long head of the biceps has a pertinent biomechanical role in glenohumeral stability regardless of the condition of the superior labrum. [32] (10.1016/j.arthro.2025.05.022)
  • [L4] Validity for strength testing of the serratus anterior muscle is optimal with subjects in a seated position and the shoulder flexed at 90° in the scapular plane. [33] (10.1186/s12891-019-2741-7)
  • [L5] Treatment is directed at managing underlying causes and restoring normal scapular muscle activation patterns by kinetic chain–based rehabilitation protocols. [35] (10.5435/00124635-200303000-00008)
  • [L5] Both proposed superior labral reconstruction techniques increased the force needed for humeral head superior migration in the setting of a labral tear. [36] (10.1016/j.arthro.2018.08.049)
  • [L5] This review examines the role of the LHBT as a source of local autograft, with biological and biomechanical properties, in aiding outcomes of complex primary and revision shoulder surgery procedures. [40] (10.1016/j.jse.2023.04.009)
  • [L5] Diagnosis and nonoperative management of long head of biceps tendon disorders are categorized as inflammation, instability, and rupture, requiring specific protocols. [41] (10.1016/j.csm.2015.08.006)
  • [L4] Potential prognostic variables associated with final subscapularis strength remain elusive. [42] (10.1016/j.jse.2014.06.042)
  • [L5] The ultimate load to failure and stiffness for the two methods were not different. [43] (10.1007/s00167-013-2775-6)
  • [L3] High-demand patients with biceps tendonitis in the setting of a SLAP lesion with labral instability who undergo combined tenodesis and labral repair have significantly worse outcomes than patients who undergo either isolated labral repair for type II SLAP tears or isolated biceps tenodesis for a SLAP tear and biceps tendonitis. [44] (10.1007/s00167-015-3774-6)
  • [L5] Biceps tendon pain in the absence of tears is associated with microscopic changes consistent with tendinopathy, which are often missed by MRI. [46] (10.1016/j.csm.2015.08.002)
  • [L3] Most abnormal MRI findings were not different in frequency between symptomatic and asymptomatic shoulders. [47] (10.1016/j.jse.2019.04.001)
  • [L1] We do not find any value in bicipital groove morphology measured by MRI as a predictor of biceps tendon or rotator cuff pathology at the time of surgery. [48] (10.1016/j.jse.2010.04.044)
  • [L4] Patient age should not be used as the sole criterion when deciding between biceps tenotomy and tenodesis. [49] (10.1016/j.arthro.2016.04.022)
  • [L3] Biceps tenodesis remains a reliable treatment for pathologic abnormality of the long head of the biceps. [50] (10.1177/0363546515570024)
  • [L3] Preoperative MRI scans of the shoulder interpreted by orthopaedic surgeons with the described systematic approach resulted in improved accuracy in diagnosing subscapularis tendon tears compared with previous studies. [51] (10.1016/j.arthro.2012.04.142)
  • [L4] Although this may be an effective strategy to address failed prior biceps surgery, the potential complication of persistent pain must be emphasized. [54] (10.1177/0363546519892922)
  • [L4] In approximately 80% of the intra-articular biceps tears evaluated in this study, a 'hidden lesion' was observed going beyond the bicipital groove and extending to the distal extra-articular portion. [55] (10.1177/0363546514554193)
  • [L5] The MTJ of the biceps begins further proximal than may be appreciated intraoperatively. [56] (10.1177/0363546513482297)
  • [L4] Superior clinical outcomes are seen in nonsmokers, those with only 1 tendon affected, and those who undergo tenotomy instead of tenodesis for a damaged long head of biceps tendon. [58] (10.1016/j.jse.2019.12.011)

References

[1] Is arthroscopic repair superior to biceps tenotomy and tenodesis for type II SLAP lesions? A meta-analysis of RCTs and observational studies. Journal of Orthopaedic Surgery and Research. 2019. DOI: 10.1186/s13018-019-1096-y [2] A SLAP lesion associated with calcific tendinitis of the long head of the biceps brachii at its origin. Knee Surgery, Sports Traumatology, Arthroscopy. 2007. DOI: 10.1007/s00167-007-0323-y [3] Clinical Outcomes After Biceps Tenodesis or Tenotomy Using Subpectoral Pain to Guide Management in Patients With Rotator Cuff Tears. Arthroscopy. 2019. DOI: 10.1016/j.arthro.2019.02.017 [4] Subpectoral Biceps Tenodesis for the Treatment of Type II and IV Superior Labral Anterior and Posterior Lesions. The American Journal of Sports Medicine. 2014. DOI: 10.1177/0363546514540273 [5] Proximal Biceps in Overhead Athletes. Clinics in Sports Medicine. 2016. DOI: 10.1016/j.csm.2015.08.009 [6] Principles of the superior labrum and biceps complex: an expert consensus from the NEER Circle. Journal of Shoulder and Elbow Surgery. 2025. DOI: 10.1016/j.jse.2024.09.040 [7] Surgical Treatment of Superior Labral/Biceps Pathology in the Overhead Thrower. Journal of the American Academy of Orthopaedic Surgeons. 2023. DOI: 10.5435/jaaos-d-21-01199 [8] Editorial Commentary: Which to Fix—the Biceps or the Labrum? The Shoulder SLAP Tear Is Still Controversial. Arthroscopy. 2019. DOI: 10.1016/j.arthro.2019.02.026 [9] Outcomes of Primary Biceps Subpectoral Tenodesis in an Active Population: A Prospective Evaluation of 101 Patients. Arthroscopy. 2019. DOI: 10.1016/j.arthro.2019.06.035 [10] The Efficacy of Biceps Tenodesis in the Treatment of Failed Superior Labral Anterior Posterior Repairs. The American Journal of Sports Medicine. 2014. DOI: 10.1177/0363546513520122 [11] Rehabilitation of Biceps Tendon Disorders in Athletes. Clinics in Sports Medicine. 2010. DOI: 10.1016/j.csm.2009.12.003 [12] Understanding the Importance of the Teres Minor for Shoulder Function: Functional Anatomy and Pathology. Journal of the American Academy of Orthopaedic Surgeons. 2018. DOI: 10.5435/jaaos-d-15-00258 [13] Surgical Trends in the Treatment of Superior Labrum Anterior and Posterior Lesions of the Shoulder. The American Journal of Sports Medicine. 2014. DOI: 10.1177/0363546514534939 [14] Subsequent Shoulder Surgery After Isolated Arthroscopic SLAP Repair. Arthroscopy. 2016. DOI: 10.1016/j.arthro.2016.01.053 [15] Subpectoral biceps tenodesis: a new technique using an all‐suture anchor fixation. Knee Surgery, Sports Traumatology, Arthroscopy. 2014. DOI: 10.1007/s00167-014-3348-z [16] Examination of the Biceps Tendon. Clinics in Sports Medicine. 2016. DOI: 10.1016/j.csm.2015.08.004 [17] Biceps tendinitis in chronic rotator cuff tears: A histologic perspective. Journal of Shoulder and Elbow Surgery. 2008. DOI: 10.1016/j.jse.2008.05.044 [18] Risk Factors for Revision Surgery After Superior Labral Anterior-Posterior Repair: A National Perspective. The American Journal of Sports Medicine. 2017. DOI: 10.1177/0363546517691950 [19] Radiologic and Histologic Evaluation of Proximal Bicep Pathology in Patients With Chronic Biceps Tendinopathy Undergoing Open Subpectoral Biceps Tenodesis. Arthroscopy. 2018. DOI: 10.1016/j.arthro.2018.01.021 [20] Clinical Faceoff: Tenotomy Versus Tenodesis for the Treatment of Proximal Biceps Pathology. Clinical Orthopaedics & Related Research. 2022. DOI: 10.1097/corr.0000000000002448 [21] Role of the superior labrum after biceps tenodesis in glenohumeral stability. Journal of Shoulder and Elbow Surgery. 2014. DOI: 10.1016/j.jse.2013.07.036 [22] Editorial Commentary: You May Not Have Seen It, but It Has Seen You: Diagnosis of Long Head Biceps Tendon and Subscapularis Pathology in Association With Shoulder Rotator Cuff Pathology Can Be Challenging. Arthroscopy. 2017. DOI: 10.1016/j.arthro.2017.09.005 [23] Biceps tenodesis versus tenotomy: a systematic review and meta-analysis of level I randomized controlled trials. Journal of Shoulder and Elbow Surgery. 2021. DOI: 10.1016/j.jse.2020.11.012 [24] Treatment for Symptomatic SLAP Tears in Middle‐Aged Patients Comparing Repair, Biceps Tenodesis, and Nonoperative Approaches: A Cost‐Effectiveness Analysis. Arthroscopy. 2018. DOI: 10.1016/j.arthro.2018.01.029 [25] Is There an Association Between SLAP Lesions and Biceps Pulley Lesions?. Arthroscopy. 2011. DOI: 10.1016/j.arthro.2011.01.005 [26] Editorial Commentary: The Shoulder Biceps Tendon and Baseball Continue Their Controversial Relationship. Arthroscopy. 2018. DOI: 10.1016/j.arthro.2018.01.001 [28] Anatomy, Function, Injuries, and Treatment of the Long Head of the Biceps Brachii Tendon. Arthroscopy. 2011. DOI: 10.1016/j.arthro.2010.10.014 [31] Clinical and sonographic evaluation of subpectoral biceps tenodesis with a dual suture anchor technique demonstrates improved outcomes and a low failure rate at a minimum 2-year follow-up. Archives of Orthopaedic and Trauma Surgery. 2017. DOI: 10.1007/s00402-017-2810-z [32] Biceps Tenodesis/Tenotomy Disrupts Biomechanical Glenohumeral Stability in the Setting of Superior Labrum Anteroposterior Tear and Repair. Arthroscopy. 2025. DOI: 10.1016/j.arthro.2025.05.022 [33] Validity and reliability of serratus anterior hand held dynamometry. BMC Musculoskeletal Disorders. 2019. DOI: 10.1186/s12891-019-2741-7 [35] Scapular Dyskinesis and Its Relation to Shoulder Pain. Journal of the American Academy of Orthopaedic Surgeons. 2003. DOI: 10.5435/00124635-200303000-00008 [36] Reconstruction of the Superior Glenoid Labrum With Biceps Tendon Autograft: A Cadaveric Biomechanical Study. Arthroscopy. 2018. DOI: 10.1016/j.arthro.2018.08.049 [40] The long head of the biceps tendon: a valuable tool in shoulder surgery. Journal of Shoulder and Elbow Surgery. 2023. DOI: 10.1016/j.jse.2023.04.009 [41] Nonoperative Management (Including Ultrasound-Guided Injections) of Proximal Biceps Disorders. Clinics in Sports Medicine. 2016. DOI: 10.1016/j.csm.2015.08.006 [42] The return of subscapularis strength after shoulder arthroplasty. Journal of Shoulder and Elbow Surgery. 2015. DOI: 10.1016/j.jse.2014.06.042 [43] Biomechanical characterization of unicortical button fixation: a novel technique for proximal subpectoral biceps tenodesis. Knee Surgery, Sports Traumatology, Arthroscopy. 2013. DOI: 10.1007/s00167-013-2775-6 [44] Combined SLAP repair and biceps tenodesis for superior labral anterior–posterior tears. Knee Surgery, Sports Traumatology, Arthroscopy. 2015. DOI: 10.1007/s00167-015-3774-6 [46] How Accurate Are We in Detecting Biceps Tendinopathy?. Clinics in Sports Medicine. 2016. DOI: 10.1016/j.csm.2015.08.002 [47] Bilateral magnetic resonance imaging findings in individuals with unilateral shoulder pain. Journal of Shoulder and Elbow Surgery. 2019. DOI: 10.1016/j.jse.2019.04.001 [48] Bicipital groove morphology on MRI has no correlation to intra-articular biceps tendon pathology. Journal of Shoulder and Elbow Surgery. 2010. DOI: 10.1016/j.jse.2010.04.044 [49] Patients Have Strong Preferences and Perceptions for Biceps Tenotomy Versus Tenodesis. Arthroscopy. 2016. DOI: 10.1016/j.arthro.2016.04.022 [50] All-Arthroscopic Suprapectoral Versus Open Subpectoral Tenodesis of the Long Head of the Biceps Brachii. The American Journal of Sports Medicine. 2015. DOI: 10.1177/0363546515570024 [51] A Systematic Approach for Diagnosing Subscapularis Tendon Tears With Preoperative Magnetic Resonance Imaging Scans. Arthroscopy. 2012. DOI: 10.1016/j.arthro.2012.04.142 [54] Management of Failed Proximal Biceps Surgery: Clinical Outcomes After Revision to Subpectoral Biceps Tenodesis. The American Journal of Sports Medicine. 2019. DOI: 10.1177/0363546519892922 [55] Analysis of “Hidden Lesions” of the Extra-articular Biceps After Subpectoral Biceps Tenodesis. The American Journal of Sports Medicine. 2014. DOI: 10.1177/0363546514554193 [56] Relevant Anatomic Landmarks and Measurements for Biceps Tenodesis. The American Journal of Sports Medicine. 2013. DOI: 10.1177/0363546513482297 [58] Medium-term outcomes of a cohort of revision rotator cuff repairs. Journal of Shoulder and Elbow Surgery. 2020. DOI: 10.1016/j.jse.2019.12.011

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Creative Commons public licenses provide a standard set of terms and conditions that creators and other rights holders may use to share original works of authorship and other material subject to copyright and certain other rights specified in the public license below. The following considerations are for informational purposes only, are not exhaustive, and do not form part of our licenses.

Considerations for licensors: Our public licenses are intended for use by those authorized to give the public permission to use material in ways otherwise restricted by copyright and certain other rights. Our licenses are irrevocable. Licensors should read and understand the terms and conditions of the license they choose before applying it. Licensors should also secure all rights necessary before applying our licenses so that the public can reuse the material as expected. Licensors should clearly mark any material not subject to the license. This includes other CC- licensed material, or material used under an exception or limitation to copyright. More considerations for licensors: wiki.creativecommons.org/Considerations_for_licensors

Considerations for the public: By using one of our public licenses, a licensor grants the public permission to use the licensed material under specified terms and conditions. If the licensor's permission is not necessary for any reason--for example, because of any applicable exception or limitation to copyright--then that use is not regulated by the license. Our licenses grant only permissions under copyright and certain other rights that a licensor has authority to grant. Use of the licensed material may still be restricted for other reasons, including because others have copyright or other rights in the material. A licensor may make special requests, such as asking that all changes be marked or described. Although not required by our licenses, you are encouraged to respect those requests where reasonable. More considerations for the public: wiki.creativecommons.org/Considerations_for_licensees


Creative Commons Attribution-NonCommercial 4.0 International Public License

By exercising the Licensed Rights (defined below), You accept and agree to be bound by the terms and conditions of this Creative Commons Attribution-NonCommercial 4.0 International Public License ("Public License"). To the extent this Public License may be interpreted as a contract, You are granted the Licensed Rights in consideration of Your acceptance of these terms and conditions, and the Licensor grants You such rights in consideration of benefits the Licensor receives from making the Licensed Material available under these terms and conditions.

Section 1 -- Definitions.

a. Adapted Material means material subject to Copyright and Similar Rights that is derived from or based upon the Licensed Material and in which the Licensed Material is translated, altered, arranged, transformed, or otherwise modified in a manner requiring permission under the Copyright and Similar Rights held by the Licensor. For purposes of this Public License, where the Licensed Material is a musical work, performance, or sound recording, Adapted Material is always produced where the Licensed Material is synched in timed relation with a moving image.

b. Adapter's License means the license You apply to Your Copyright and Similar Rights in Your contributions to Adapted Material in accordance with the terms and conditions of this Public License.

c. Copyright and Similar Rights means copyright and/or similar rights closely related to copyright including, without limitation, performance, broadcast, sound recording, and Sui Generis Database Rights, without regard to how the rights are labeled or categorized. For purposes of this Public License, the rights specified in Section 2(b)(1)-(2) are not Copyright and Similar Rights.

d. Effective Technological Measures means those measures that, in the absence of proper authority, may not be circumvented under laws fulfilling obligations under Article 11 of the WIPO Copyright Treaty adopted on December 20, 1996, and/or similar international agreements.

e. Exceptions and Limitations means fair use, fair dealing, and/or any other exception or limitation to Copyright and Similar Rights that applies to Your use of the Licensed Material.

f. Licensed Material means the artistic or literary work, database, or other material to which the Licensor applied this Public License.

g. Licensed Rights means the rights granted to You subject to the terms and conditions of this Public License, which are limited to all Copyright and Similar Rights that apply to Your use of the Licensed Material and that the Licensor has authority to license.

h. Licensor means the individual(s) or entity(ies) granting rights under this Public License.

i. NonCommercial means not primarily intended for or directed towards commercial advantage or monetary compensation. For purposes of this Public License, the exchange of the Licensed Material for other material subject to Copyright and Similar Rights by digital file-sharing or similar means is NonCommercial provided there is no payment of monetary compensation in connection with the exchange.

j. Share means to provide material to the public by any means or process that requires permission under the Licensed Rights, such as reproduction, public display, public performance, distribution, dissemination, communication, or importation, and to make material available to the public including in ways that members of the public may access the material from a place and at a time individually chosen by them.

k. Sui Generis Database Rights means rights other than copyright resulting from Directive 96/9/EC of the European Parliament and of the Council of 11 March 1996 on the legal protection of databases, as amended and/or succeeded, as well as other essentially equivalent rights anywhere in the world.

l. You means the individual or entity exercising the Licensed Rights under this Public License. Your has a corresponding meaning.

Section 2 -- Scope.

a. License grant.

1. Subject to the terms and conditions of this Public License, the Licensor hereby grants You a worldwide, royalty-free, non-sublicensable, non-exclusive, irrevocable license to exercise the Licensed Rights in the Licensed Material to:

a. reproduce and Share the Licensed Material, in whole or in part, for NonCommercial purposes only; and

b. produce, reproduce, and Share Adapted Material for NonCommercial purposes only.

2. Exceptions and Limitations. For the avoidance of doubt, where Exceptions and Limitations apply to Your use, this Public License does not apply, and You do not need to comply with its terms and conditions.

3. Term. The term of this Public License is specified in Section 6(a).

4. Media and formats; technical modifications allowed. The Licensor authorizes You to exercise the Licensed Rights in all media and formats whether now known or hereafter created, and to make technical modifications necessary to do so. The Licensor waives and/or agrees not to assert any right or authority to forbid You from making technical modifications necessary to exercise the Licensed Rights, including technical modifications necessary to circumvent Effective Technological Measures. For purposes of this Public License, simply making modifications authorized by this Section 2(a) (4) never produces Adapted Material.

5. Downstream recipients.

a. Offer from the Licensor -- Licensed Material. Every recipient of the Licensed Material automatically receives an offer from the Licensor to exercise the Licensed Rights under the terms and conditions of this Public License.

b. No downstream restrictions. You may not offer or impose any additional or different terms or conditions on, or apply any Effective Technological Measures to, the Licensed Material if doing so restricts exercise of the Licensed Rights by any recipient of the Licensed Material.

6. No endorsement. Nothing in this Public License constitutes or may be construed as permission to assert or imply that You are, or that Your use of the Licensed Material is, connected with, or sponsored, endorsed, or granted official status by, the Licensor or others designated to receive attribution as provided in Section 3(a)(1)(A)(i).

b. Other rights.

1. Moral rights, such as the right of integrity, are not licensed under this Public License, nor are publicity, privacy, and/or other similar personality rights; however, to the extent possible, the Licensor waives and/or agrees not to assert any such rights held by the Licensor to the limited extent necessary to allow You to exercise the Licensed Rights, but not otherwise.

2. Patent and trademark rights are not licensed under this Public License.

3. To the extent possible, the Licensor waives any right to collect royalties from You for the exercise of the Licensed Rights, whether directly or through a collecting society under any voluntary or waivable statutory or compulsory licensing scheme. In all other cases the Licensor expressly reserves any right to collect such royalties, including when the Licensed Material is used other than for NonCommercial purposes.

Section 3 -- License Conditions.

Your exercise of the Licensed Rights is expressly made subject to the following conditions.

a. Attribution.

1. If You Share the Licensed Material (including in modified form), You must:

a. retain the following if it is supplied by the Licensor with the Licensed Material:

i. identification of the creator(s) of the Licensed Material and any others designated to receive attribution, in any reasonable manner requested by the Licensor (including by pseudonym if designated);

ii. a copyright notice;

iii. a notice that refers to this Public License;

iv. a notice that refers to the disclaimer of warranties;

v. a URI or hyperlink to the Licensed Material to the extent reasonably practicable;

b. indicate if You modified the Licensed Material and retain an indication of any previous modifications; and

c. indicate the Licensed Material is licensed under this Public License, and include the text of, or the URI or hyperlink to, this Public License.

2. You may satisfy the conditions in Section 3(a)(1) in any reasonable manner based on the medium, means, and context in which You Share the Licensed Material. For example, it may be reasonable to satisfy the conditions by providing a URI or hyperlink to a resource that includes the required information.

3. If requested by the Licensor, You must remove any of the information required by Section 3(a)(1)(A) to the extent reasonably practicable.

4. If You Share Adapted Material You produce, the Adapter's License You apply must not prevent recipients of the Adapted Material from complying with this Public License.

Section 4 -- Sui Generis Database Rights.

Where the Licensed Rights include Sui Generis Database Rights that apply to Your use of the Licensed Material:

a. for the avoidance of doubt, Section 2(a)(1) grants You the right to extract, reuse, reproduce, and Share all or a substantial portion of the contents of the database for NonCommercial purposes only;

b. if You include all or a substantial portion of the database contents in a database in which You have Sui Generis Database Rights, then the database in which You have Sui Generis Database Rights (but not its individual contents) is Adapted Material; and

c. You must comply with the conditions in Section 3(a) if You Share all or a substantial portion of the contents of the database.

For the avoidance of doubt, this Section 4 supplements and does not replace Your obligations under this Public License where the Licensed Rights include other Copyright and Similar Rights.

Section 5 -- Disclaimer of Warranties and Limitation of Liability.

a. UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS AND AS-AVAILABLE, AND MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND CONCERNING THE LICENSED MATERIAL, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION, WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, ABSENCE OF LATENT OR OTHER DEFECTS, ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT KNOWN OR DISCOVERABLE. WHERE DISCLAIMERS OF WARRANTIES ARE NOT ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU.

b. TO THE EXTENT POSSIBLE, IN NO EVENT WILL THE LICENSOR BE LIABLE TO YOU ON ANY LEGAL THEORY (INCLUDING, WITHOUT LIMITATION, NEGLIGENCE) OR OTHERWISE FOR ANY DIRECT, SPECIAL, INDIRECT, INCIDENTAL, CONSEQUENTIAL, PUNITIVE, EXEMPLARY, OR OTHER LOSSES, COSTS, EXPENSES, OR DAMAGES ARISING OUT OF THIS PUBLIC LICENSE OR USE OF THE LICENSED MATERIAL, EVEN IF THE LICENSOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH LOSSES, COSTS, EXPENSES, OR DAMAGES. WHERE A LIMITATION OF LIABILITY IS NOT ALLOWED IN FULL OR IN PART, THIS LIMITATION MAY NOT APPLY TO YOU.

c. The disclaimer of warranties and limitation of liability provided above shall be interpreted in a manner that, to the extent possible, most closely approximates an absolute disclaimer and waiver of all liability.

Section 6 -- Term and Termination.

a. This Public License applies for the term of the Copyright and Similar Rights licensed here. However, if You fail to comply with this Public License, then Your rights under this Public License terminate automatically.

b. Where Your right to use the Licensed Material has terminated under Section 6(a), it reinstates:

1. automatically as of the date the violation is cured, provided it is cured within 30 days of Your discovery of the violation; or

2. upon express reinstatement by the Licensor.

For the avoidance of doubt, this Section 6(b) does not affect any right the Licensor may have to seek remedies for Your violations of this Public License.

c. For the avoidance of doubt, the Licensor may also offer the Licensed Material under separate terms or conditions or stop distributing the Licensed Material at any time; however, doing so will not terminate this Public License.

d. Sections 1, 5, 6, 7, and 8 survive termination of this Public License.

Section 7 -- Other Terms and Conditions.

a. The Licensor shall not be bound by any additional or different terms or conditions communicated by You unless expressly agreed.

b. Any arrangements, understandings, or agreements regarding the Licensed Material not stated herein are separate from and independent of the terms and conditions of this Public License.

Section 8 -- Interpretation.

a. For the avoidance of doubt, this Public License does not, and shall not be interpreted to, reduce, limit, restrict, or impose conditions on any use of the Licensed Material that could lawfully be made without permission under this Public License.

b. To the extent possible, if any provision of this Public License is deemed unenforceable, it shall be automatically reformed to the minimum extent necessary to make it enforceable. If the provision cannot be reformed, it shall be severed from this Public License without affecting the enforceability of the remaining terms and conditions.

c. No term or condition of this Public License will be waived and no failure to comply consented to unless expressly agreed to by the Licensor.

d. Nothing in this Public License constitutes or may be interpreted as a limitation upon, or waiver of, any privileges and immunities that apply to the Licensor or You, including from the legal processes of any jurisdiction or authority.


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