Short-term to medium-term outcomes of cemented Vitallium radial head prostheses after early excision for radial head fractures.

Studies show that the radial head is a significant stabilizer to valgus and varus stresses and external rotatory stability. We review the outcomes of patients who had radial head replacement in our institution. Six patients with Mason-Johnston type III or IV radial head fractures underwent radial head replacement and were evaluated by radiologic and clinical assessment. The American Shoulder and Elbow Surgeons score, DASH (Disabilities Arm, Shoulder and Hand) score, and Broberg and Morrey Performance Index were calculated. Average follow-up was 29.7 months. The Broberg and Morrey score was excellent for 1 patient, good for 3, fair for 1, and poor for 1. Complications included prosthetic loosening in 4 patients and 1 patient each with ulnar neuropathy, heterotrophic ossification, and wrist pain. Outcomes did not necessarily correlate with the severity of the initial injury or the eventual range of motion. Longer follow-up is required to see if the radiologic loosening will lead to clinical instability.