Posterior Glenohumeral Instability: Diagnosis and Management

Posterior glenohumeral instability can manifest as posterior shoulder pain and dysfunction, particularly among athletes. Repetitive, posteriorly-directed axial loads, as commonly encountered by contact athletes (American football linemen, rugby players), result in microtrauma that can induce posteroinferior labral tears. Alternatively, superior labrum anterior posterior (SLAP) tears commonly seen in throwing athletes may propagate in a posteroinferior direction (i.e. a Type VIII SLAP tear), owing to a complex pathological cascade involving glenohumeral capsular contracture and imbalances among the dynamic stabilizing muscles of both the glenohumeral joint and shoulder girdle.
Source: Arthroscopy - Journal of Arthroscopic and Related Surgery - Category: Surgery Authors: Tags: Infographic Source Type: research