反復性肩関節前方脱臼の予後調査

抄録

We examined and discussed for relation between primary traumatic anteriro shoulder dislocation and recurrent anterior shoulder dislocation. As the result, the incidence of recurrent dislocation was a high rate in young patients. Contrary, it was the small number of recurrences in old patients. We discuss the reason of small number of recurrences in old patients and report the prognosis of recurrent dislocation. Total 458 cases were obtained information through a questionnaire for primary traumatic dislocation and recurrent dislocation.
Answers were 134 cases of primary traumatic dislocation and 138 cases of recurrent dislocation. We took some cases physical examination about range of motion, instability and roentgenographic study. In 15 per cent of the patients, the dislocation recurred.
The incidence of recurrent dislocation of the shoulder was 34 per cent before 30 years of age, but 2 per cent after age 50. There was no incidence of recurrence for the group of 5 weeks immobilization or more. Various phases of trauma in relation to dislocations were reviewed. Usually the greater the initial injury, the lower was the incidence of recurrence.
In recurrent dislocation group, before 30 yea r s of age of the patient at the time of primary deslocation was 85 per cent, and 4 cases after 50 years of age had all huge Hill-Sachs lision. From our figures, patients had dislocated easily decreased the incidence of dislocation year by year.