COMMINUTED FRACTURES OF THE PROXIMAL RADIUS AND ULNA

Forty-three comminuted fractures of the proximal radius and ulna in 34 patients were treated with operative stabilization using AO/ASIF tech niques. The patients were divided into three groups, according to the type of injury: Group I, isolated comminuted fractures of the olecrano n (18 patients); Group II, isolated fractures of the radial head (eigh t patients); Group III, combined olecranon and radial head fractures ( eight patients). All fractures were followed until union. The average follow-up period was 18 months (range, 12-48 months). At the time of t his review, the average limits of elbow motion were 20-degrees extensi on, 118-degrees flexion, 65-degrees pronation, and 62-degrees supinati on. Two patients were unable to return for follow-up examination. Usin g the functional classification of Broberg and Morrey, results were ra ted as excellent in nine cases, good in 15, fair in five, and poor in three. The complication rate in this series was 19%: Two patients deve loped nonunion, and one patient lost reduction during rehabilitation. All of these patients required reoperation, with eventual satisfactory outcome. Three patients developed heterotopic ossification, two of wh ich were minor and one of which produced ankylosis of the elbow joint. Each of these patients had delayed (more than 72 hours postinjury) st abilization. A functional elbow was achieved in 29 of the 32 patients who returned for follow-up examination. Operative stabilization of com minuted fractures of the proximal radius and ulna provides a stable pa inless joint with a functional, but not full, range of motion.