Biomechanical evaluation of the elbow following radial head fracture. Comparison of open reduction and internal fixation vs. excision, silastic replacement, and non-operative management

Abstract

Thirty-six fractures of the radial head were evaluated following treatment with four different techniques: open reduction and internal fixation (ORIF), excision, silastic replacement, and non-operative management. Clinical assessment included calculation of the Clinical Performance Index based on parameters for motion, stability, pain, and daily function, as well as radiographic evaluation for fracture type (Mason) and the development of degenerative changes. Further assessment included isometric strength measurements for elbow flexion, extension, pronation, supination, and grip. Range of motion and strength measurements were similar, except for grip strength, which was significantly better for ORIF patients compared to excision or silastic replacement groups. Patients with ORIF had the best clinical scores with minimal radiographic changes. When possible, ORIF of displaced radial head fractures appears to provide the best functional result.