Fig. 3

A girl of Masada type IIb forearm deformity: (a) 3.5-year-old, X-rays. Forearm deformity was not obvious, with good elbow function. (b) 6.5-year-old, preoperative X-rays. Ulnar shortening, ulnar deviation of wrist, radial head dislocation and cubitus varus were obvious, with flexion and pronation disorder of elbow. (c) Early postoperative X-rays. Osteochondroma resection and ulna osteotomy were performed, with the Monorail external fixator ready for ulnar lengthening. (d) 1 month after operation, 2.5cm were gained. (e) 9.5-year-old, X-rays of the latest follow-up. Spontaneous reduction of radial head was observed, and the distal ulna obtained a certain growth potential. The forearm deformity was corrected