The effect of articular malposition after total shoulder arthroplasty on glenohumeral translations, range of motion, and subacromial impingement (original) (raw)

The study investigates the impact of articular malposition in total shoulder arthroplasty on glenohumeral translations, range of motion, and subacromial impingement using twenty-one human cadaver shoulders. Two phases of testing analyzed kinematics and impingement, revealing significant correlations between humeral head offsets and changes in range of motion and translation, particularly with inferior offsets increasing torque during impingement tests. Findings suggest that optimal alignment of the prosthetic head is crucial for restoring shoulder function post-arthroplasty.