Ferrer GA, et al. - This research aspired to evaluate in vivo glenohumeral kinematic changes for internal/external rotation motions with the arm at the side of patients with a symptomatic full-thickness supraspinatus tear before and after a 12-week exercise therapy programme. Compared to healthy controls from the previous literature for internal/external rotation with the arm at the side, isolated supraspinatus tears resulted in increased joint translations. Glenohumeral kinematics did not change despite satisfactory clinical outcomes following exercise therapy. The lack of changes could be because of the motion studied or the focus of current exercise therapy protocols being increasing shoulder strength and restoring range of motion. Current exercise therapy protocols must be adapted to also focus on restoring glenohumeral kinematics to improve joint stability since exercise therapy could have different effects depending on the motions of daily living.