Non-operative treatment of multidirectional shoulder instability.

At an average follow-up of 3.7 years we assessed the results of non-operative treatment of 84 symptomatic shoulders in 59 patients with a diagnosis of multidirectional shoulder instability. Sixty-two shoulders had received no previous surgical treatment (group A) while 22 had failed to respond to surgical treatment before the rehabilitation programme (group B). Subjectively 11 of the non-operated shoulders (group A) were cured and 27 improved, 23 of the shoulders remained the same and one was worse at follow-up. According to the age and gender adjusted Constant score, 38 of the non-operated shoulders had either no disability or only mild disability, nine had moderate disability, while the remaining 15 had severe or total disability. These figures were far worse in group B. In group A only four shoulders required operation, while in group B seven required operation following rehabilitation. Patients who had had previous shoulder surgery, those with a work related injury and those with psychological problems were less likely to benefit from the rehabilitation programme.