Intramedullary Cage Fixation for Proximal Humerus Fractures Has Low Reoperation Rates at 1 Year: Results of a Multicenter Study.

Objectives: To determine reoperation rates after treatment of a proximal humerus fracture with cage fixation.

Design: Retrospective case series.

Setting: Eleven U.

Understanding the Radiographic Anatomy of the Proximal Ulna and Avoiding Inadvertent Intraarticular Screw Placement.

Objectives: To map the proximal ulnar articular margins and ensure safe extraarticular placement of implants.

Methods: Ten fresh frozen adult elbow cadaver specimens were obtained. Radiopaque wire was applied to the articular margin of the articular facets and the central trochlear ridge of the proximal ulna.