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Bone Health and Osteoporosis

How bone strength affects fractures, fixation and recovery — bone density, fragility fractures, and what helps keep bones strong (lifestyle, supplements and medications).

Updated Jul 2026
Cross-section of trabecular bone showing its honeycomb internal structure.
Bone is living tissue; its internal honeycomb thins with age and osteoporosis, raising fracture risk. Kieran Hirpara 4.0

What you're feeling

You may notice pain in your shoulder that worsens with movement. Reaching behind your back to fasten a bra can become difficult. Tucking in a shirt might also feel awkward or painful. The discomfort often flares up at night, making it hard to sleep on the affected side. This is common even if you have decreased bone mineral density, which is a sign of weaker bones.

Despite these symptoms, many patients still achieve excellent results two years after arthroscopic rotator cuff repair. This procedure uses small cameras and instruments to fix torn tendons in the shoulder. Your surgeon will evaluate your specific situation to determine the best approach. Osteoporosis should not stop you from having this surgery, as overall complication rates remain low. However, having osteoporosis does mean you are at a higher risk for complications and reoperations one to three years after the repair.

Be aware that patients with osteoporosis may face a higher chance of medical issues within the first 90 days after rotator cuff surgery compared to those with healthy bones. It is important to discuss your bone health with your care team. Low rates of osteoporosis medication use are seen in patients who have suffered femoral neck fractures, even when guidelines recommend treatment. Addressing your bone density now can help support your recovery and long-term shoulder function.

What's actually happening

Osteoporosis means your bones have become weak and fragile. Think of healthy bone like a dense honeycomb. In osteoporosis, the holes in that honeycomb grow larger. This makes the structure brittle and more likely to break. You might not feel any pain until a fracture occurs. However, weak bones can also affect how your joints heal after surgery.

For example, if you have shoulder surgery, osteoporosis is a risk factor for complications and reoperations at 1 and 3 years. This is because the bone needs to be strong enough to hold the repair in place. Despite this risk, osteoporosis should not be considered a reason to avoid arthroscopic rotator cuff repair. The overall complication rates are low. In fact, patients with decreased bone density can still achieve excellent 2-year outcomes after this procedure.

It is important to know that osteoporosis can increase your risk of other issues. Patients with osteoporosis may experience a higher incidence of medical complications within the 90-day global period than nonosteoporotic patients following rotator cuff repair. This means you need careful monitoring in the first three months after surgery.

Your surgeon may use specific techniques to support your healing. For spine procedures, continuous bone cement and standardized treatment are guarantees of good clinical outcomes for percutaneous vertebroplasty. Injected bone cement volume greater than 5.5 ml might be a guarantee of good clinical outcomes for percutaneous vertebroplasty. These steps help stabilize the bone and reduce pain.

There are also many ways to manage bone health. Natural traditional Chinese medicine products provide a theoretical and experimental basis for the development of new drugs and the improvement of osteoporosis management. Acupuncture shows encouraging efficacy in improving symptoms of primary osteoporosis as a physical intervention in clinical practice. Additionally, optimizing teriparatide administration timing may guide personalized dosing strategies to enhance bone formation and reduce fracture risk in osteoporosis.

Your care team is working to keep your bones strong. A bone density-based aging model may facilitate and support the development of precision medicine strategies in osteoporosis prevention and management. This helps tailor your treatment to your specific needs. Sequential anabolic-to-anti-resorptive therapy may inform treatment guidelines for high-risk postmenopausal populations. These approaches aim to build new bone and stop it from breaking down too quickly.

What to expect

Your outlook depends largely on how actively you and your surgeon manage bone health. Osteoporosis is a condition where bones become weak and brittle. With modern care, this is not a sentence to inevitable decline. New approaches, such as using bone density scans to tailor your treatment, help your surgeon create a plan just for you. This personalized strategy aims to strengthen your bones and lower your risk of breaks.

If you receive treatment, the goal is to rebuild strength. Your surgeon might recommend specific medications or therapies that encourage new bone growth. Some patients also find relief through physical interventions like acupuncture, which can help ease pain and improve daily comfort. The key is consistency. When treatment is managed well—such as using the right amount of bone cement for spinal procedures—you can expect stable, positive results that support your mobility and quality of life.

If osteoporosis is left unmanaged, the risks increase significantly. Weak bones are more prone to fractures, which can lead to serious complications. For example, patients with osteoporosis often face a higher chance of medical issues in the three months following other surgeries, like rotator cuff repair. However, having osteoporosis does not mean you cannot have surgery. Many patients still achieve excellent outcomes two years after procedures like rotator cuff repair, even with lower bone density. The main takeaway is that osteoporosis is a risk factor, not a barrier. It requires careful attention to prevent complications and reoperations at one and three years post-surgery.

Recovery feels different for everyone. Some days may be easier than others. The path forward involves monitoring your bone health closely and sticking to your treatment plan. By staying proactive, you give yourself the best chance at maintaining strength and independence. Your surgeon will guide you through each step, ensuring that your care evolves as your needs change.


Evidence & references

Overview

  • A bone density based aging model may facilitate and support the development of precision medicine strategies in osteoporosis prevention and management [1].
  • Optimizing teriparatide administration timing may guide personalized dosing strategies to enhance bone formation and reduce fracture risk in osteoporosis [2].
  • Natural traditional Chinese medicine products provide a theoretical and experimental basis for the development of new drugs and the improvement of osteoporosis management [3].
  • Sequential anabolic-to-anti-resorptive therapy may inform treatment guidelines for high-risk postmenopausal populations [4].
  • Acupuncture shows encouraging efficacy in improving symptoms of primary osteoporosis as a physical intervention in clinical practice [5].
  • Machine learning application to hand radiographs represents a possible step toward more accessible, cost-effective, automated diagnosis and earlier treatment of osteoporosis/osteopenia [6].
  • Low rates of osteoporotic pharmacotherapy were seen in patients who had femoral neck fractures despite established guidelines [7].
  • Patients with osteoporosis may experience a higher incidence of medical complications within the 90-day global period than nonosteoporotic patients following rotator cuff repair [8].
  • Patients with decreased bone mineral density can still achieve excellent 2-year outcomes after arthroscopic rotator cuff repair [9].
  • Osteoporosis is a risk factor for complications and reoperations at 1 and 3 years after arthroscopic rotator cuff repair [11].
  • Osteoporosis should not be considered a contraindication to arthroscopic rotator cuff repair given overall low complication rates [11].
  • Continuous bone cement and standardized treatment for osteoporosis were guarantees of good clinical outcomes for percutaneous vertebroplasty [12].
  • Injected bone cement >5.5 ml might be a guarantee of good clinical outcomes for percutaneous vertebroplasty [12].

How It Works

  • Bone density-based aging models can facilitate and support the development of precision medicine strategies in osteoporosis prevention and management [1].
  • Optimizing teriparatide administration timing may guide personalized dosing strategies to enhance bone formation and reduce fracture risk in osteoporosis [2].
  • Natural traditional Chinese medicine products provide a theoretical and experimental basis for the development of new drugs and the improvement of osteoporosis management [3].
  • Sequential anabolic-to-anti-resorptive therapy may inform treatment guidelines for high-risk postmenopausal populations [4].
  • Acupuncture shows encouraging efficacy in improving symptoms of primary osteoporosis, supporting its use as a physical intervention in clinical practice [5].
  • Machine learning applied to hand radiographs represents a possible step toward more accessible, cost-effective, automated diagnosis and earlier treatment of osteoporosis/osteopenia [6].
  • Low rates of osteoporotic pharmacotherapy are observed in patients who have sustained femoral neck fractures despite established guidelines [7].
  • Patients with osteoporosis may experience a higher incidence of medical complications within the 90-day global period following rotator cuff repair than nonosteoporotic patients [8].
  • Patients with decreased bone mineral density can still achieve excellent 2-year outcomes following arthroscopic rotator cuff repair [9].
  • Current machine learning-based prediction models for postmenopausal osteoporosis without fractures demonstrate good discriminative ability but are generally characterized by a high risk of bias, a notable lack of calibration performance evaluation, and insufficient validation of clinical utility [10].
  • Genetically modified stem cell therapy is a safe and effective method that can significantly improve bone mineral density and bone volume/total volume in animal models of osteoporosis [13].
  • The prevalence of osteoporosis among postmenopausal women hospitalized for fractures in China is 76.9%, with prolonged menopause, vertebral fractures, and recent fracture history identified as key risk profiles [14].
  • Obesity-associated dyslipidemia drives bone mineral density loss partly through inflammation-mediated pathways, with key inflammatory cytokines significantly mediating lipid metabolism's impact on bone health [16].
  • Bone mineral density alone cannot predict early migration of tibial baseplates in cementless total knee arthroplasty [17].

What the Evidence Shows

Risk Prediction and Screening

  • A bone density-based aging model may facilitate precision medicine strategies in osteoporosis prevention and management [1].
  • Machine learning applied to hand radiographs represents a possible step toward more accessible, cost-effective, automated diagnosis and earlier treatment of osteoporosis/osteopenia [6].
  • Current machine learning-based prediction models for postmenopausal osteoporosis without fractures demonstrate good discriminative ability but are generally characterized by a high risk of bias, a notable lack of calibration performance evaluation, and insufficient validation of clinical utility [10].

Pharmacologic and Non-Pharmacologic Therapies

  • Sequential anabolic-to-anti-resorptive therapy may inform treatment guidelines for high-risk postmenopausal populations [4].
  • The efficacy of acupuncture in improving the symptoms of primary osteoporosis is encouraging for its use in clinical practice as a physical intervention [5].
  • Genetically modified stem cell therapy is a safe and effective method that can significantly improve bone mineral density (BMD) and bone volume/total volume (BV/TV) in animal models of osteoporosis [13].
  • Jintiange capsules are a good choice for patients with osteoporosis for relieving pain, improving BMD, improving activity function, and improving gait and preventing fracture [18].
  • Natural traditional Chinese medicine products provide a theoretical and experimental basis for the development of new drugs and the improvement of osteoporosis management [3].
  • Optimizing teriparatide administration timing may guide personalized dosing strategies to enhance bone formation and reduce fracture risk in osteoporosis [2].

Perioperative Outcomes and Complications

  • Osteoporosis is a risk factor for complications and reoperations at 1 and 3 years after arthroscopic rotator cuff repair [11].
  • Patients with osteoporosis may experience a higher incidence of medical complications within the 90-day global period than nonosteoporotic patients following rotator cuff repair [8].
  • Despite established guidelines, low rates of osteoporotic pharmacotherapy were seen in patients who had femoral neck fractures [7].
  • In osteopenic and osteoporotic patients undergoing total joint arthroplasty, rates of 2- and 5-year postoperative complications were low and similar among patients who used proton pump inhibitors perioperatively and those who did not [15].
  • Bisphosphonate use in patients who have osteoporosis did not decrease the risk of periprosthetic fracture following total knee arthroplasty, but significantly lowered the incidence of all-cause revision at 2 years [20].

Surgical Efficacy and Technical Factors

  • Patients with decreased bone mineral density can still achieve excellent 2-year outcomes after arthroscopic rotator cuff repair [9].
  • Osteoporosis should not be considered a contraindication to arthroscopic rotator cuff repair [11].
  • Continuous bone cement and standardized treatment for osteoporosis were guarantees of good clinical outcomes for percutaneous vertebroplasty, and injected bone cement >5.5 ml might be a guarantee [12].

Practical Considerations

  • Bone density-based aging models may facilitate precision medicine strategies in osteoporosis prevention and management [1].
  • Optimizing teriparatide administration timing may guide personalized dosing strategies to enhance bone formation and reduce fracture risk in osteoporosis [2].
  • Natural traditional Chinese medicine products provide a theoretical and experimental basis for the development of new drugs and the improvement of osteoporosis management [3].
  • Sequential anabolic-to-anti-resorptive therapy may inform treatment guidelines for high-risk postmenopausal populations [4].
  • Acupuncture shows encouraging efficacy in improving symptoms of primary osteoporosis as a physical intervention in clinical practice [5].
  • Machine learning applied to hand radiographs represents a step toward more accessible, cost-effective, automated diagnosis and earlier treatment of osteoporosis/osteopenia [6].
  • Low rates of osteoporotic pharmacotherapy were observed in patients with femoral neck fractures despite established guidelines [7].
  • Patients with osteoporosis may experience a higher incidence of medical complications within the 90-day global period following rotator cuff repair compared to nonosteoporotic patients [8].
  • Patients with decreased bone mineral density can achieve excellent 2-year outcomes after arthroscopic rotator cuff repair [9].
  • Machine learning-based prediction models for postmenopausal osteoporosis without fractures demonstrate good discriminative ability but are characterized by a high risk of bias, a notable lack of calibration performance evaluation, and insufficient validation of clinical utility [10].
  • Osteoporosis is a risk factor for complications and reoperations at 1 and 3 years after arthroscopic rotator cuff repair [11].
  • Osteoporosis should not be considered a contraindication to arthroscopic rotator cuff repair given overall low complication rates [11].
  • Continuous bone cement and standardized treatment for osteoporosis are guarantees of good clinical outcomes for percutaneous vertebroplasty [12].
  • Injected bone cement volume greater than 5.5 ml might be a guarantee of good clinical outcomes for percutaneous vertebroplasty [12].
  • The prevalence of osteoporosis among postmenopausal women hospitalized for fractures in China is 76.9% [14].
  • Prolonged menopause, vertebral fractures, and recent fracture history are key risk profiles for osteoporosis in postmenopausal women hospitalized for fractures [14].
  • Rates of 2- and 5-year postoperative complications in osteopenic and osteoporotic patients undergoing total joint arthroplasty were low and similar among those who used perioperative proton pump inhibitors and those who did not [15].

Key Evidence

  • [L3] This approach may facilitate and support the development of precision medicine strategies in osteoporosis prevention and management. [1] (10.1186/s12891-025-09298-0)
  • [L2] This trial is expected to provide crucial insights into optimizing teriparatide administration timing, potentially guiding personalized dosing strategies to enhance bone formation and reduce fracture risk in osteoporosis. [2] (10.1186/s13018-025-06083-6)
  • [L4] This paper summarises recent research progress on natural TCM products in preventing and treating osteoporosis and provides a theoretical and experimental basis for the development of new drugs and the improvement of osteoporosis management. [3] (10.1186/s13018-025-05879-w)
  • [L1] This sequential anabolic-to-anti-resorptive therapy may inform treatment guidelines for high-risk postmenopausal populations. [4] (10.1186/s13018-025-06040-3)
  • [L1] The current evidence suggests that the efficacy of acupuncture in improving the symptoms of primary osteoporosis is encouraging for its use in clinical practice as a physical intervention. [5] (10.1186/s13018-025-05513-9)
  • [L2] The findings represent a possible step toward more accessible, cost-effective, automated diagnosis and therefore earlier treatment of osteoporosis/osteopenia. [6] (10.1016/j.jhsa.2024.09.008)
  • [L3] Despite established guidelines, low rates of osteoporotic pharmacotherapy were seen in patients who had femoral neck fractures. [7] (10.1016/j.arth.2025.07.028)
  • [L3] In addition, patients with osteoporosis may experience a higher incidence of medical complications within the 90-day global period than nonosteoporotic patient. [8] (10.1016/j.xrrt.2026.100723)
  • [L3] Patients with decreased bone mineral density can still achieve excellent 2-year outcomes. [9] (10.1016/j.jse.2025.02.011)
  • [L1] Current machine learning-based prediction models for postmenopausal osteoporosis without fractures demonstrate good discriminative ability but are generally characterized by a high risk of bias, a notable lack of calibration performance evaluation, and insufficient validation of clinical utility. [10] (10.1186/s12891-025-09385-2)
  • [L3] Overall rates of complication were low and osteoporosis should not be considered a contraindication to arthroscopic RCR. [11] (10.1016/j.jseint.2026.101678)
  • [L3] Continuous bone cement and standardized treatment for osteoporosis were guarantees of good clinical outcomes for PVP, and injected bone cement >5.5 ml might be a guarantee. [12] (10.1186/s12891-024-08153-y)
  • [L1] Genetically modified stem cell therapy is a safe and effective method that can significantly improve the BMD and BV/TV in animal models of osteoporosis. [13] (10.1186/s12891-025-08507-0)
  • [L4] This study reveals an alarmingly high prevalence (76.9%) of osteoporosis among postmenopausal women hospitalized for fractures in China, identifying prolonged menopause, vertebral fractures, and recent fracture history as key risk profiles. [14] (10.1186/s12891-026-09517-2)
  • [L3] In osteopenic and osteoporotic patients undergoing TJA, rates of 2- and 5-year postoperative complications were low and similar among patients who used PPIs perioperatively and those who did not. [15] (10.1016/j.arth.2025.07.067)
  • [L4] Obesity-associated dyslipidemia drives BMD loss partly through inflammation-mediated pathways, with key inflammatory cytokines significantly mediating lipid metabolism's impact on bone health. [16] (10.1186/s12891-026-09576-5)
  • [L4] Our results suggest that BMD alone cannot predict early migration of tibial baseplates. [17] (10.1016/j.arth.2026.03.014)
  • [L1] In terms of relieving pain, improving BMD, improving activity function, and improving gait and preventing fracture, JTG is a good choice for patients with osteoporosis (OP). [18] (10.1186/s12891-025-08694-w)
  • [L3] While bisphosphonate use in patients who have osteoporosis did not decrease the risk of periprosthetic fracture, it did significantly lower the incidence of all-cause revision at 2 years. [20] (10.1016/j.arth.2024.11.004)

References

[1] Unveiling risk factors and predicting osteoporosis through bone density based aging model: a community-based cohort in Guangdong, China. BMC Musculoskeletal Disorders. 2025. DOI: 10.1186/s12891-025-09298-0 [2] Timing optimization of teriparatide dosing for postmenopausal osteoporosis: a randomized controlled trial. Journal of Orthopaedic Surgery and Research. 2025. DOI: 10.1186/s13018-025-06083-6 [3] Natural traditional Chinese medicine products: emerging therapeutic targets for the treatment of osteoporosis. Journal of Orthopaedic Surgery and Research. 2025. DOI: 10.1186/s13018-025-05879-w [4] Effectiveness of anabolic and anti-resorptive agents for preventing postmenopausal osteoporosis fractures: a systematic review and network meta-analysis. Journal of Orthopaedic Surgery and Research. 2025. DOI: 10.1186/s13018-025-06040-3 [5] Efficacy of acupuncture for primary osteoporosis: a systematic review and meta-analysis of randomized controlled trials. Journal of Orthopaedic Surgery and Research. 2025. DOI: 10.1186/s13018-025-05513-9 [6] Application of Machine Learning to Osteoporosis and Osteopenia Screening Using Hand Radiographs. The Journal of Hand Surgery. 2025. DOI: 10.1016/j.jhsa.2024.09.008 [7] A Missed Opportunity? Osteoporosis Treatment Following Femoral Neck Fractures: Reducing the Risk of Secondary Hip Fracture. The Journal of Arthroplasty. 2026. DOI: 10.1016/j.arth.2025.07.028 [8] Impact of osteoporosis on post-operative outcomes following rotator cuff repair. JSES Reviews, Reports, and Techniques. 2026. DOI: 10.1016/j.xrrt.2026.100723 [9] No difference in 2-year outcomes of arthroscopic rotator cuff repair in patients with osteoporosis. Journal of Shoulder and Elbow Surgery. 2025. DOI: 10.1016/j.jse.2025.02.011 [10] Risk prediction models for postmenopausal osteoporosis: a systematic review and meta-analysis study. BMC Musculoskeletal Disorders. 2026. DOI: 10.1186/s12891-025-09385-2 [11] Osteoporosis is a risk factor for complications and reoperations at 1 and 3 years after arthroscopic rotator cuff repair. JSES International. 2026. DOI: 10.1016/j.jseint.2026.101678 [12] Continuity and volume of bone cement and anti osteoporosis treatment were guarantee of good clinical outcomes for percutaneous vertebroplasty: a multicenter study. BMC Musculoskeletal Disorders. 2025. DOI: 10.1186/s12891-024-08153-y [13] Genetically modified stem cells for osteoporosis: a systematic review and meta-analysis of preclinical studies. BMC Musculoskeletal Disorders. 2025. DOI: 10.1186/s12891-025-08507-0 [14] How prevalent is osteoporosis in a high-risk subgroup? A multicenter study of postmenopausal women hospitalized for fractures in China. BMC Musculoskeletal Disorders. 2026. DOI: 10.1186/s12891-026-09517-2 [15] Effects of Perioperative Proton Pump Inhibitor Use on Outcomes of Total Joint Arthroplasty Patients Who Have Osteoporosis and Osteopenia. The Journal of Arthroplasty. 2026. DOI: 10.1016/j.arth.2025.07.067 [16] Perioperative inflammatory cytokines nursing screening test indicate the link between dysregulated lipid metabolism and reduced bone mineral density in obese osteoporosis patients: a retrospective study. BMC Musculoskeletal Disorders. 2026. DOI: 10.1186/s12891-026-09576-5 [17] Stable Fixation in Cementless Total Knee Arthroplasty Even for Low Local Bone Mineral Density. The Journal of Arthroplasty. 2026. DOI: 10.1016/j.arth.2026.03.014 [18] The effect of Jintiange capsules on pain in patients with primary osteoporosis: a systematic review and meta-analysis. BMC Musculoskeletal Disorders. 2025. DOI: 10.1186/s12891-025-08694-w [20] Bisphosphonate Use in Patients Who Have Osteoporosis Does Not Increase the Risk of Periprosthetic Fracture Following Total Knee Arthroplasty. The Journal of Arthroplasty. 2025. DOI: 10.1016/j.arth.2024.11.004

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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.


Creative Commons is not a party to its public licenses. Notwithstanding, Creative Commons may elect to apply one of its public licenses to material it publishes and in those instances will be considered the “Licensor.” The text of the Creative Commons public licenses is dedicated to the public domain under the CC0 Public Domain Dedication. Except for the limited purpose of indicating that material is shared under a Creative Commons public license or as otherwise permitted by the Creative Commons policies published at creativecommons.org/policies, Creative Commons does not authorize the use of the trademark "Creative Commons" or any other trademark or logo of Creative Commons without its prior written consent including, without limitation, in connection with any unauthorized modifications to any of its public licenses or any other arrangements, understandings, or agreements concerning use of licensed material. For the avoidance of doubt, this paragraph does not form part of the public licenses.

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