title: [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.
authors.affiliation: Clinique chirurgicale orthopédique et traumatologique I, CHU hôpital Trousseau, Tours.
authors.forename: L
authors.initials: L
authors.lastname: Favard
authors.forename: P
authors.initials: P
authors.lastname: Preyssas
authors.forename: Y
authors.initials: Y
authors.lastname: Kerjean
authors.forename: T
authors.initials: T
authors.lastname: Lascar
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D007593:Joint Instability / Q000175:diagnosis* / Q000473:pathology; D008023:Ligaments, Articular / Q000473:pathology*; D010808:Physical Examination; D012785:Shoulder Joint / Q000473:pathology*; D020069:Shoulder Pain / Q000209:etiology