title: Lunate Morphology of Kienböck's Disease on X-Ray Study.
abstract: To investigate whether the lunate morphology proposed by Watson predisposes to Kienböck's disease, we investigated 23 patients with Kienböck's disease and 24 normal controls. Lateral X-ray films showed 17 of type D (dorsally lower height) lunate; 2 of type P (palmary lower height); and 1 of type N (equal palmar height to dorsal). In the control group, there were 21 of type D; 2 of type P; and 1 of type N, among 24 patients. The mean wedge ratio was 1.17 (1.08-1.35) in type D of the Kienböck group, and 1.11 (1.03-1.41) in type D of the control group. There were no statistically significant differences between the two groups, and palmar and dorsal lunate morphology is not believed to predispose to Kienböck's disease.
authors.affiliation: Hand Surgery Division, Department of Orthopaedic Surgery, Nagoya University School of Medicine, Nagoya, Japan.
authors.initials: H
authors.lastname: Kato
authors.initials: R
authors.lastname: Nakamura