Table 1.
Etiology | Limited cases in literature. Posterior dislocation of long head of biceps tendon always associated with anterior glenohumeral dislocation. Requires disruption of the structures of the biceps pulley and the posterolateral supporting structures of the shoulder joint: either rupture of supraspinatus and infraspinatus tendons close to their insertions or a displaced fracture of the greater tuberosity. |
Incidence | N/A |
Gender ratio | Too few cases to comment |
Age predilection | Too few cases to comment |
Risk factors | Too few cases to comment |
Treatment | Tenotomy or Tenodesis of dislocated tendon required to allow successful and complete glenohumeral reduction. A degree of rotator cuff repair usually required. |
Prognosis | Depends on presence and severity of associated injuries, pre-existing pathology and compliance with post-operative physiotherapy. |
Findings on imaging | Empty bicipital groove; long head of biceps tendon displaced posterolateral to the humerus; either tear of at least infraspinatus and supraspinatus tendons close to their insertion on the greater tuberosity or displaced greater tuberosity fracture. |