Subacromial Distal Clavicle Dislocation with Associated Scapular Spine Fracture: A Case Report

Inferior dislocation of the clavicle into the subacromial space with an associated scapular spine fracture is an extremely rare injury which has not been previously reported. This injury can successfully be managed by first reducing the AC joint, and then proceeding with anatomic reduction and fixation of the scapular spine with good functional result. The ligaments surrounding the AC joint in the subacromial pattern are often intact, and the dislocation is a result of capsular injury. This leads us to believe that subtyping the Rockwood VI classification to VIa (subacromial) and VIb (subcoracoid) would be useful for orthopedic surgeons due to differences in associated injury and subsequent operative management.