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.