Kienbock's disease is an eponym for avascular necrosis of the lunate bone. It usually affects man working manually with tools like pneumatic hammer that cause repetitive trauma.
| Stage | Description |
|---|---|
| Stage I | normal x-ray |
| Stage II | sclerosis of lunate with possible decrease of lunate height on radial side only |
| Stage IIIa | lunate collapse, no scaphoid rotation |
| Stage IIIb | lunate collapse, fixed scaphoid rotation |
| Stage IV | degenerative changes around the lunate |
1. Goldfarb CA, Hsu J, Gelberman RH, Boyer MI. The Lichtman classification for Kienböck’s disease: an assessment of reliability. J Hand Surg Am. 2003 Jan;28(1):74–80.
2. Saunders BM, Lichtman D. A classification-based treatment algorithm for Kienböck disease: current and future considerations. Tech Hand Up Extrem Surg. 2011 Mar;15(1):38–40.