Internal fixation of unstable proximal humerus fractures with an anatomically preshaped interlocking plate: a clinical and radiologic evaluation.

Background: We evaluated the outcome after internal fixation of unstable or displaced proximal humerus fractures with a new fixed-angle implant.

Methods: Prospective consecutive study with a 1-year clinical follow-up in 119 of 137 patients (87%; mean 68 +/- 15 years; 31 two-, 47 three-, and 41 four-part fractures).

Results: One year postoperatively, the range of motion of the injured side demonstrated on average four-fifths of the function of the contralateral side.