Open arthrolysis and prosthetic replacement of the radial head for elbow stiffness associated with rotation limitation.

BACKGROUND

Limited forearm rotation is a frequent combined disorder in elbow stiffness. If the radial head cannot be saved during open arthrolysis, prosthetic replacement might be considered because it enhances stability and allows early motion.

METHODS

In this study we retrospectively analyzed the outcome of 8 patients (7 men, 1 woman) who underwent open arthrolysis and simultaneous prosthetic replacement after resection of the radial head to restore elbow range of motion and forearm rotation. Patients were a mean age of 31.7 years (range, 22-40 years).

RESULTS

Postoperatively, the mean (range) active range of motion improved from 29.4° (0°-70°) to 113.1° (80°-135°), mean (range) supination increased from 38.8° (0°-80°) to 77.5° (50°-90°), and mean (range) pronation improved from 18.8° (0°-80°) to 68.8° (50°-80°). The Mayo Elbow Performance Score improved from a mean (range) of 57.5 (50-70) to 92.5 (85-100) points. No elbow valgus instability was detected over a mean duration of 26 months of follow-up. The implant was considered stable in all patients.

CONCLUSIONS

Open arthrolysis and prosthetic replacement of the radial head are effective in treating elbow stiffness with associated rotation limitation after resection of the radial head.