1991 年 15 巻 2 号 p. 273-277
From January 1988 to April 1990, we had 1709 athlete patients in our clinic.149 of them had complaints of shoulder problems.
There were 22 injuries and 127 over-used disorders of the shoulder. The number of cases with shoulder disorder was mostly among baseball players.
Dislocation of the acromio-clavicular joint w as present in most injuries of the shoulder. And so called baseball shoulder was the most prominent of the over-used disorders of the shoulder.
32 of these cases had shoulder instability which is of the important factors which induces a shoulder disorder.
We tr e ated mainly conservatively. Most of the patients recovered and are satisfied. We belive that correcting the playing form is very important in preventing further shoulder disorders.