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The major pain source of rotator cuff‐related shoulder pain: A narrative review on current evidence

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posted on 2022-12-15, 01:44 authored by Chi Ngai Lo, Pui Lam Bernard LeungPui Lam Bernard Leung, Grant Sanders, Megan Wai Ming Li, Shirley P. C. Ngai

Background. Rotator cuff-related shoulder pain (RCRSP) was proposed to have a complex pain mechanism, but the exact aetiology is still unclear. A recent review summarised the updated research to analyse the traditional concept of shoulder impingement which may not be accurate. Current studies have demonstrated that mechanical factors including a reduction in subacromial space, scapular dyskinesia and different acromial shapes are unlikely directly contributing to RCRSP.

Aims. Since the precise RCRSP pain mechanism remains unclear, the aim of this narrative review is to discuss possible sources of pain contributing to RCRSP according to the mechanisms-based pain classifications.

Results and Discussion. Research findings on potential mechanical nociceptive factors of RCRSP are conflicting; investigations of neuropathic and central pain mechanisms of RCRSP are limited and inconclusive. Overall, available evidence has indicated moderate to strong correlations between RCRSP and chemical nociceptive sources of pain.

Conclusion. Results from current research may provide new directions for future studies on the aetiology of RCRSP and its clinical management towards a biochemical view instead of the traditional mechanical hypothesis.

History

Journal/Conference/Book title

Musculoskeletal Care

Publication date

2022-11-30

Version

  • Post-print

Rights statement

This is the peer reviewed version of the following article: Lo, C. N., B. P. L. Leung, G. Sanders, M. W. M. Li, and S. P. C. Ngai. (2022). The major pain source of rotator cuff‐related shoulder pain: A narrative review on current evidence. Musculoskeletal Care. https://doi.org/10.1002/msc.1719, which has been published in final form at https://doi.org/10.1002/msc.1719. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

Corresponding author

Chris Lo, lochingai@gmail.com

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