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Clinical Trial Summary

Rotator cuff tendinopathy, one of the pathologies identified as part of the cluster of shoulder symptoms known as subacromial pain syndrome, is a common musculoskeletal shoulder condition. Resolution of pain and disability is poor despite treatment, with only about 50% reporting full recovery at 12 - 18 months. Prior studies suggest therapeutic exercise when used alone and with other interventions can have positive outcomes; however, not all patients with rotator cuff tendinopathy respond. Few studies have assessed the effects of exercise for individuals with chronic pain, especially brain driven mechanisms, thought to play a key role. In this study, we will use brain imaging to understand the mechanisms, identify predictors of a positive response to exercise, and the relationship to biomechanical and pain-related factors in patients with RC tendinopathy. The findings from this study will optimize the delivery and treatment response to exercise for individuals with shoulder pain.


Clinical Trial Description

Theoretical models propose the development of shoulder pain from an acute injury or repetitive motion seen in sports and certain work environments. Repetitive motions, in combination with altered muscle activity and altered movement strategies, may lead to damage of the rotator cuff structures resulting in local shoulder pain. Emerging evidence supports the hypothesis that localized pain may result in chronic centralized pain over time through central sensitization. Central nervous system changes, specifically those at the level of the brain have been shown to play a role in chronic pain. Neurophysiological mechanisms have been shown to predict symptom progression in other chronic pain conditions. Despite a large body of evidence that therapeutic exercise, mechanisms leading to pain relief are still not well understood. Studies identify a critical role of exercise in modulating excitation and inhibition of key pain centers in the central nervous systems. However, limited evidence exists as to the mechanisms of exercise in the management of patients with chronic pain with therapeutic exercise. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04923477
Study type Interventional
Source University of Southern California
Contact Lori A Michener, PT, ATC, PhD
Phone 323-224-5032
Email lmichene@usc.edu
Status Recruiting
Phase N/A
Start date June 8, 2021
Completion date December 31, 2024

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