抄録
[Purpose]To clarify the specific arthroscopic finding for diagnosis of symptomatic Bennett's ossification in patients with throwing shoulder.
[Materials and methods]Twenty-three baseball players with Bennett's ossification who underwent arthroscopic examination were studied retrospectively. While 13 of them were symptomatic,10asymptomatic patients were studied as the control.
[Results]Ossifications were detected by probing in 12 symptomatic shoulders and 3 asymptomatic shoulders. Fibrosis of the postero-inferior gleno-humeral ligament was seen in 6 symptomatic shoulders and 2 asymptomatic shoulders. The frequency of the fraying of the postero-inferior labrum was similar in both groups, but detachment of the postero-inferior labrum was more frequently seen in the asymptomatic group. As for other labral injuries, rotator cuff tear, greater tuberosity notching, and subacromial bursitis, there were no significant differences detected.
[Conclusions]As no specific arthroscopic findings were detected in patients with symptomatic Bennett's ossification, careful pre-operative diagnosis should be done.
