Proximal Humerus Allogenic Transplant for Treatment of a Complex Proximal Humerus Fracture-Dislocation.

Proximal humerus fracture-dislocations are complex injuries, particularly when there is extensive bone loss, compromised soft tissues, or failed initial treatment. We present the case of a 23-year-old male with a chronic shoulder fracture-dislocation following a fall. Initial management involved open reduction and internal fixation, but postoperative imaging revealed hardware failure and recurrent shoulder dislocation. The patient then underwent humeral head reconstruction using an iliac crest autograft. However, two months later, subluxation and humeral head necrosis were detected. A second reconstruction was performed using a proximal humerus allograft, which successfully restored shoulder stability and function. This case highlights the effectiveness of allogenic bone reconstruction in managing complex shoulder injuries.