Disruption of the anterior-posterior rotator cuff force balance alters joint function and leads to joint damage in a rat model.

ABSTRACT: The rotator cuff assists in shoulder movement and provides dynamic stability to the glenohumeral joint. Specifically, the anterior-posterior (AP) force balance, provided by the subscapularis anteriorly and the infraspinatus and teres minor posteriorly, is critical for joint stability and concentric rotation of the humeral head on the glenoid. However, limited understanding exists of the consequences associated with disruption of the AP force balance (due to tears of both the supraspinatus and infraspinatus tendons) on joint function and joint damage. We investigated the effect of disrupting the APforce balance on joint function and joint damage in an overuse rat model. Twenty-eight rats underwent 4 weeks of overuse to produce a tendinopathic condition and were then randomized into two surg

SUBMITTER: Reuther KE 

PROVIDER: S-EPMC4006275 | biostudies-literature | 2014 May

REPOSITORIES: biostudies-literature