Three-dimensional scapular morphology is associated with rotator cuff tears and alters the abduction moment arms of the supraspinatus

Numerous studies have reported an association between rotator cuff injury and two-dimensional measures of scapular morphology. However, the mechanical underpinnings explaining how these shape features affect glenohumeral joint function and lead to injury are poorly understood. We hypothesized that three-dimensional features of scapular morphology differentiate asymptomatic shoulders from those with rotator cuff tears, and that these features would alter the mechanical advantage of the supraspinatus.

Source: Clinical Biomechanics - June 9, 2020 Category: Orthopaedics Authors: Erin C.S. Lee, Neil T. Roach, Allison Clouthier, Ryan T. Bicknell, Michael J. Bey, Nathan Young, Michael J. Rainbow Source Type: research