[Shoulder instability].

Abstract

Shoulder instability is a sign described by the patient. The etiology of this instability is varied: sometimes it is the result of a traumatic luxation with tear of the gleno-humeral inferior ligament, sometimes it is the result of an abnormal hyperlaxity. The examiner must be able to do a difference between these two causes because treatment and consequence are very different. Nevertheless, these two factors can be associated at variable degrees. A careful history and examination, a precise x-rays and scanning can help the examiner to solve this difficult problem.