Four-part fracture dislocation of the proximal humerus: an arthroscopic approach.

The 4-part fracture dislocation of the proximal humerus remains an unsolved problem in young patients. The majority of 4-part fracture dislocations are best managed by humeral head replacement, although open reduction and internal fixation in young patients with good bone quality may be considered. Better results are obtained associated with limited exposure, careful soft tissue dissection, and stable fixation. We present an unpublished technique of reduction with arthroscopic assistance and percutaneous stabilization, which preserves the soft tissue around the fragments, avoiding the deltopectoral approach.