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What's New — Spine — May 2026

15 new articles published this month.

Themes: Hip-Spine Interaction and Outcomes · Spinal Fusion Safety and Technique · Diagnostic Challenges and Nomenclature · Sports Medicine and Peripheral Nerve Issues

Digest generated 2026-06-05 21:04:47+00:00.

Highlights

Hip-Spine Interaction and Outcomes

Recent literature highlights the complex interplay between hip and spine pathologies, particularly regarding surgical outcomes and biomechanics. Studies indicate that concomitant lumbar pathology may negatively affect results in femoroacetabular impingement syndrome, though patients still derive significant benefit from hip arthroscopy [5, 6]. Furthermore, preoperative assessment of spino-pelvic mobility is critical; relaxed- and flexed-seated radiographs provide valuable data for total hip arthroplasty planning [14]. Computer modeling further demonstrates that spinal stiffness significantly increases impingement risk during daily activities, emphasizing the need for personalized implant positioning to enhance stability [15]. These findings collectively underscore the importance of evaluating the entire kinetic chain to optimize patient care.

Spinal Fusion Safety and Technique

This theme addresses key concerns regarding spinal fusion safety, implant biology, and surgical technique in challenging bone quality. Evidence suggests that cigarette smoking may not significantly diminish fusion likelihood in combined TLIF and posterolateral arthrodesis, challenging traditional preoperative cutoffs [1]. In pediatric populations, concerns persist regarding elevated blood metal nanoparticle levels following spinal fusion and implantation in adolescent idiopathic scoliosis [2]. Additionally, technical innovations for revision surgery in osteoporotic bone show promise; cadaveric studies indicate that cement-augmented pedicle screws offer superior pull-out strength compared to conventional or larger-diameter screws in revision settings [4]. These studies collectively inform risk stratification and technical decision-making in spinal fusion procedures.

Diagnostic Challenges and Nomenclature

Several articles focus on diagnostic precision, ranging from advanced imaging algorithms to critical reviews of spinal nomenclature. Machine learning models demonstrate potential for accurately differentiating spinal tuberculosis, pyogenic infection, and metastasis using MRI, addressing a major diagnostic challenge [7]. In the cervical region, concomitant shoulder and neck disease requires a high index of suspicion, as cervical pathology can mimic or exacerbate shoulder symptoms, potentially taking precedence in treatment algorithms [9]. Furthermore, rigorous scrutiny of literature is essential; a typographical error in disc bulge versus protrusion definitions was identified in a longitudinal study on adolescent skiers, highlighting the impact of nomenclature on evidence synthesis [11, 12].

Sports Medicine and Peripheral Nerve Issues

This cluster covers spine injuries in high-performance athletes and peripheral nerve decompression techniques. An analysis of NBA spine injuries reveals distinct patterns in injury distribution and return-to-play timelines for both operative and nonoperative cases [13]. Beyond the spine, endoscopic decompression of the long thoracic nerve in the thoracic segment shows efficacy in treating axillary and periscapular pain associated with scapulothoracic abnormal motion [8]. Additionally, experimental research explores the role of the thoracolumbar fascia and body mass index in pain sensitivity, using hypertonic saline models to understand nociceptive processing in the lumbar region [3].

Articles by Theme

Hip-Spine Interaction and Outcomes (4)

5. Kaplan DJ. Editorial Commentary : Lumbar Pathology Likely Negatively Affects Surgical Outcomes in Patients With Femoroacetabular Impingement Syndrome, Though the Strength of the Relationship is Unclear. Arthroscopy 2026. doi:10.1002/arj.70202

This editorial discusses the potential negative impact of concomitant lumbar pathology on surgical outcomes for patients with femoroacetabular impingement syndrome. It suggests that while outcomes may be less optimal, hip arthroscopy remains a reasonable option with appropriately managed patient expectations.

6. Niu X, Xie Z. Hip Arthroscopy in Femoroacetabular Impingement Syndrome With Versus Without Low Back Pain and Lumbar Spine Pathology Shows Comparable Outcomes at Minimum 5‐Year Follow‐Up. Arthroscopy 2026. doi:10.1002/arj.70191

This study evaluated patient-reported outcomes after hip arthroscopy for femoroacetabular impingement syndrome in patients with and without concomitant low back pain and lumbar spine pathology. It found that patients with lumbar issues achieved comparable improvements at minimum five-year follow-up, supporting surgery despite spinal comorbidities.

14. Fontalis A, Osmani HT, Guerra-Perron M, et al. Comparative Analysis of Relaxed- and Flexed-Seated Radiographs for Assessing Spino-Pelvic Mobility in Total Hip Arthroplasty. The Journal of Arthroplasty 2026. doi:10.1016/j.arth.2026.04.101

This prospective study compared relaxed- and flexed-seated radiographs to assess spino-pelvic mobility in patients undergoing total hip arthroplasty. The results indicated that flexed-seated views identified significantly more patients as having spinal stiffness compared to relaxed-seated views, leading to substantial reclassification of pelvic parameters. Clinically, this suggests that flexed-seated imaging may offer a more accurate assessment of functional spino-pelvic mobility for surgical planning.

15. Navacchia A, Stein MK, Deckey DG, et al. How Does Total Hip Impingement Risk During Activities of Daily Living Change With Pelvic Tilt and Spinopelvic Mobility?. The Journal of Arthroplasty 2026. doi:10.1016/j.arth.2026.04.107

Using computer modeling, this study evaluated how pelvic tilt and spinopelvic mobility affect impingement risk during 12 activities of daily living after total hip arthroplasty. The analysis revealed that spinal stiffness significantly increased impingement scenarios, while changes in pelvic tilt altered impingement risk in the majority of simulated activities. These findings highlight the importance of individualized spinopelvic parameters in minimizing postoperative impingement and improving hip stability.

Spinal Fusion Safety and Technique (3)

1. Leopold SS. Editor’s Spotlight/Take 5: Cigarette Smoking Was Not Associated With Lower Odds of Radiographic Fusion After Combined TLIF and Posterolateral Lumbar (270°) Arthrodesis: A CT-based Retrospective Cohort Evaluation. Clinical Orthopaedics & Related Research 2026. doi:10.1097/corr.0000000000003999

This editorial critiques the use of strict smoking cutoffs to deny spinal fusion surgery, arguing that evidence does not support a binary risk model. The author advocates for shared decision-making over paternalistic restrictions, emphasizing that risk assessment should be nuanced rather than dichotomous.

2. Thompson GH. CORR Insights®: Are Levels of Blood Metal Nanoparticles Elevated After Spinal Fusion and Implantation in Patients With Adolescent Idiopathic Scoliosis?. Clinical Orthopaedics & Related Research 2026. doi:10.1097/corr.0000000000004004

This commentary highlights concerns regarding elevated serum metal ion levels following spinal fusion with metallic implants, particularly in pediatric populations. It underscores the need for ongoing monitoring and awareness of potential long-term systemic effects from increased implant usage in spine procedures.

4. Kafchitsas K, Kontovazainitis G, Diaremes P, et al. The benefit of cement-augmented pedicle screws for revision surgery in osteoporotic bone – a cadaveric study. BMC Musculoskeletal Disorders 2026. doi:10.1186/s12891-026-09971-y

This cadaveric study compared pull-out strength of cement-augmented pedicle screws versus conventional screws in revision surgery for osteoporotic bone. It demonstrated that cement augmentation provides superior fixation strength compared to conventional screws in compromised bone, offering a safer technique for revision procedures.

Diagnostic Challenges and Nomenclature (4)

7. Sangsin A, Khumrin P, Sarasombath P, et al. Classification of spinal tuberculous infection, pyogenic infection and spinal metastasis from magnetic resonance imaging using machine learning. BMC Musculoskeletal Disorders 2026. doi:10.1186/s12891-026-09838-2

This study developed and evaluated deep learning models to automatically classify spinal tuberculosis, pyogenic infection, and metastasis using MRI scans. It demonstrated that pre-trained convolutional neural networks can effectively differentiate these conditions, potentially aiding in reducing diagnostic delays and errors.

9. Sprowls GR, Parker M, Denninger TR, et al. Shoulder pain that is not shoulder pathology – a shoulder surgeon's guide to concomitant cervical spine and rotator cuff disease. JSES Reviews, Reports, and Techniques 2026. doi:10.1016/j.xrrt.2026.100690

The authors propose an algorithmic diagnostic and management approach for patients with concomitant rotator cuff and cervical spine disease, illustrated through clinical vignettes. They find that this structured method simplifies treatment challenges by emphasizing the need for high suspicion of cervical pathology. Clinically, surgeons are advised to prioritize cervical conditions that may require surgical intervention before addressing rotator cuff repairs.

11. Feuerriegel GC, Spörri J, Sutter R. Disc “Bulge” and “Protrusion”: Does a Typographical Inversion (< vs >) Alter Longitudinal Conclusions? Response. The American Journal of Sports Medicine 2026. doi:10.1177/03635465261426989

The authors respond to a letter regarding a typographical inversion in disc nomenclature definitions within their longitudinal study on adolescent skiers. They acknowledge the discrepancy between their published text and the cited reference regarding the percentage of disc circumference involved in bulging versus protrusion. The response clarifies the methodological context to ensure accurate interpretation of the study's findings on lumbar spine abnormalities.

12. Abudayeh A, Fishchenko I. Disc ‘‘Bulge’’ and ‘‘Protrusion’’: Does a Typographical Inversion (< vs >) Alter Longitudinal Conclusions? Letter to the Editor. The American Journal of Sports Medicine 2026. doi:10.1177/03635465261426985

The authors highlight a critical typographical error in a recent study on adolescent skiers, where disc bulging and protrusion definitions were inverted relative to the cited reference. They argue that this transcription error significantly alters the interpretation of intersegmental abnormalities and impacts future evidence synthesis. The letter urges correction to maintain methodological accuracy in longitudinal spinal imaging studies.

Sports Medicine and Peripheral Nerve Issues (3)

3. Axmann P, Jung C, Darwich A, et al. Thoracolumbar fascia thickness and body mass index as predictors of pain sensitivity: a single-blinded experimental hypertonic saline study. BMC Musculoskeletal Disorders 2026. doi:10.1186/s12891-026-09992-7

This study investigated whether thoracolumbar fascia thickness and body mass index predict pain sensitivity using an experimental hypertonic saline model. It found that thoracolumbar fascia thickness is a significant predictor of experimentally induced pain sensitivity, suggesting a link between fascia morphology and nociceptive processing.

8. Lohre R, Koljaka S, Wiley N, et al. Outcomes of endoscopic, thoracic segment long thoracic nerve decompression. JSES Reviews, Reports, and Techniques 2026. doi:10.1016/j.xrrt.2025.100629

This retrospective review assessed the efficacy of endoscopic long thoracic nerve decompression for treating axillary and periscapular pain. It found that the procedure significantly improved patient-reported outcomes, supporting its use as an effective treatment for this specific pain syndrome.

13. Gill AK, Garg S, Young P, et al. Spine Injuries in the NBA: Return to Play Expectations After a Seasonal Injury. Orthopaedic Journal of Sports Medicine 2026. doi:10.1177/23259671261440537

This retrospective analysis examined the characteristics and return-to-play times for all spine injuries sustained by NBA players from 2021 to 2024. The study found that lumbar injuries were the most common, with soreness and spasms being the predominant injury types, while cervical injuries accounted for a smaller fraction. These findings provide comprehensive data on injury distribution and recovery expectations for spine-related issues in professional basketball.

10. Alawa J, Althoff AD, Thacher RR, et al. Prior cervical spine fusion impairs early clinical outcomes following total shoulder arthroplasty and may be associated with increased fusion burden: a matched cohort analysis. JSES International 2026. doi:10.1016/j.jseint.2026.101679

This matched cohort analysis compared post-operative outcomes of total shoulder arthroplasty (TSA) in patients with prior cervical spine fusion versus those without cervical pathology. The study found that while both groups improved, the cervical fusion group demonstrated impaired early clinical outcomes and potentially increased fusion burden. These results suggest that pre-existing cervical fusion status should be considered when predicting TSA recovery and functional gains.

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