The purpose of this proposed study was to develop a filming configuration that enabled acquisition of video film data to determine the 3D coordinates of the glenohumeral joint during a golf swing. The same filming configuration was then used to film golfers with either a current rotator cuff tear, or a recent surgically repaired rotator cuff. Video film data was collected on all three groups--10 non injured, 4 current rotator cuff tear, and 6 recent surgical repair. An ANOVA was completed to test for significant differences between the swing mechanics of each group of golfers. Post-hoc testing determined where the differences occurred. The subjects for the study were low-handicap (handicap $\le$ 15) male golfers born in 1972 or earlier. The golfers were filmed using three video cameras which filmed six swings of each golfer using their driver. Once collected, the video film data was entered and analyzed using Peak5 Motion Analysis Software that configured a 27 point spatial model representing the segments of the golfer. (Abstract shortened by UMI.)