BACKGROUND: The glenohumeral joint is the most mobile articulation in the body and the most commonly dislocated diarthrodial joint with peaks in the incidence of @entity3029 occurring during the second and sixth decades. Age at the time of the @entity3029 is inversely related to the recurrence rate. @entity130 anterior instability is often associated with @entity130 . The frequency of injuries may increase with @entity3029 or @entity7194 episodes. QUESTIONS/PURPOSES: We compared the frequency of lesions associated with traumatic anterior instability in @entity1 with primary and recurrent instability. METHODS: We retrospectively reviewed 96 selected @entity1 with traumatic anterior instability treated arthroscopically between 2005 and 2008. Forty-five had arthroscopy after a first episode of @entity3029 (Group I) and 51 had two or more episodes of instability (Group II). We compared the frequencies and percentage of @entity75 in both groups. RESULTS: We observed a @entity75 in all @entity1 of both groups. The @entity75 was observed more frequently in Group II than in Group I: 47% versus 28%. @entity23114 lesions were observed in 12% in Group I and 24% in Group II. In 10 @entity1 in Group II, there was an associated rotator cuff tear. CONCLUSIONS: @entity1 with recurrent @entity2065 had a higher arthroscopic degree of injury. These @entity1 presented @entity75 , @entity23114 tears, and rotator cuff pathology than @entity1 with a first episode of @entity2065 . LEVEL OF EVIDENCE: Level II, prognostic study. See Guidelines for Authors for a complete description of levels of evidence.

Arthroscopically determined degree of XXXX relates to recurrence rate.

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients'] @entity75 :: ('MESH:D001927', 'Disease') :: ['more posterior labral lesions', 'Bankart lesion', 'posterior Bankart lesion', 'intraarticular lesions'] @entity7194 :: ('MESH:D007906', 'Disease') :: ['subluxation'] @entity23114 :: ('6503', 'Gene') :: ['SLAP'] @entity2065 :: ('MESH:D012783', 'Disease') :: ['shoulder dislocation'] @entity130 :: ('MESH:D014947', 'Disease') :: ['Traumatic', 'intraarticular injuries'] @entity3029 :: ('MESH:D004204', 'Disease') :: ['initial dislocation', 'dislocation']
@entity130 :: (MESH:D014947,Disease) :: ['injury after shoulder dislocation']
