Abstract
Ten wrists in eight children with severe destructive changes in the wrist due to juvenile chronic arthritis underwent distraction lengthening of the ulna between 1983 and 1996 in an attempt to restore wrist alignment, which had not been preserved by previous splinting. Eight wrists in six patients (four female and two male) were evaluated. The average age at the time of operation was 13.8 years (range, 12-15.5). The average follow-up period was 70 months (range, 12-152). The average ulna minus deformity was between 8 and 9 mm. It was found that ulnar lengthening can be done safely and the procedure seems to stabilize the carpus, is likely to improve appearance, may improve function and in the majority of cases does eliminate the use of an external splint. Results seem to be stable for at least 3 to 5 years.
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