Mason Type II Radial Head Fractures

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Abstract
The most appropriate treatment of Mason type II radial head fractures remains controversial. Recommended treatment has included closed reduction and immobilization, resection, or open reduction and internal fixation. The cases of 29 Mason type II radial head fractures treated at Naval Hospital Oakland from 1983 to 1989 were identified. Twenty-six or 90% were available for detailed follow-up. All cases underwent standardized elbow evaluations and results were compared using an elbow score based on a 100-point scale. The parameters evaluated were pain, motion, elbow and grip strength, and function in activities of daily living. In addition, injury and follow-up radiographs were analyzed. Mean follow-up was 18 months. There were 10 cases treated by open reduction and internal fixation and 16 cases treated by closed means. At final follow-up, the operatively treated group had a mean elbow score of 92 and 90% good/excellent results. The nonoperatively treated group had a mean elbow score of 77 and 44% good/excellent results. This difference was statistically significant (p less than 0.01). Radiographic analysis revealed a higher incidence of articular depression, displacement, and joint narrowing in the nonoperatively treated group. We conclude that displaced radial head fractures treated nonoperatively have a higher incidence of pain, functional limitations, loss of strength, and radiographic evidence of arthritis when compared to those treated by open reduction and internal fixation.

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