Muscle Thickness, Trunk Proprioception, and Postural Stability in Rotator Cuff Pathology

The rotator cuff consists of the supraspinatus, infraspinatus, teres minor, and subscapularis muscles and their tendons, which surround and stabilize the shoulder joint. Rotator cuff-related disorders may cause pain, particularly during arm elevation and external rotation, and may limit shoulder movement and daily function. Shoulder function depends not only on the muscles surrounding the shoulder but also on the coordinated transfer of force through the trunk and extremities, known as the kinetic chain. Impairments in trunk muscle function, core stability, proprioception, and balance may therefore negatively affect shoulder mechanics. This study aims to investigate the relationships between latissimus dorsi and abdominal muscle thickness, trunk proprioception, and postural stability in individuals with rotator cuff pathology. The study will also examine whether these measurements differ between individuals with rotator cuff pathology and healthy participants.