Bilateral Kienböck's disease.

Bilateral Kienböck's disease is very rare. We report here five cases of bilateral Kienböck's disease in the wrist. Of the five patients, two were manual workers and one was a housewife. The two other patients were retired and had received steroids for long periods to control autoimmune disease. The mean ulnar variance was 1. 8 (0-5) mm, and none of the patients had negative variance, indicating that negative ulnar variance was not a major risk factor for the development of bilateral Kienböck's disease.