Reconstruction for Forearm Deformities with Ulnar Shortening Induced by Capitulum Ulnae Giant Chondroma

Abstract

The patient is a 16-year-old man and was admitted to our hospital due to a gradually enlarged mass at the right wrist for more than 10 years. Examination results: General situations were good. On the ulnar side of the right wrist, a large mass approximately 6.0 × 5.0 cm in size could be seen, with hard texture but without tenderness. The mass was not movable, and no varicose veins and ulceration were found in the skin and soft tissues on the surface of the mass (Fig. 12.1). The blood supply of each finger of the right hand felt good, and the motion of fingers was good. Active and passive movement of the right wrist joint were limited: 20°-0-30°. The right forearm was approximately 3 cm shorter than the healthy left forearm. The ulnar deviation was approximately 30° in the natural position. X-ray: The high-density shadow of an irregular mass was observed at the distal end of the right ulna (Fig. 12.2). Osteochondroma was considered. Diagnosis: Osteochondroma of distal right ulna, radius curvature, and shortening deformity.