Author(s)

V. Antolic, V. Kralj Iglic, A. Iglic & F. Srakar

Abstract

Legg-Calve-Perthes' disease: stress distribution in the hip joint articular surface after varisation osteotomy V. Antolic*, V. Kralj Iglic<\ A. Iglic^ & F. Srakar* ^ University Clinical Hospital for Orthopaedics, Zaloska 9, 61000 Ljubljana, Slovenia ^Faculty of Electrical and Computer Engineering, Trzaska 25, 61000 Ljubljana, Slovenia ^Institute of Biophysics, Medical Faculty, Lipiceva 2, 61000 Ljubljana, Slovenia ABSTRACT Biomechanical influences of the varisation osteotomy performed on 7 clinical cases of Legg-Calve-Perthes' disease with lateral subluxation of the flattened femoral epiphysis are studied. For this purpose, a three dimen- sional mathematical model of the hip joint articular surface is used, taking into account the spherical shape of the femoral head and of the acetabulum inner surface before and after the operation. The model as- sumes that stress on the hip joint articular surface is proportional to the cosine of the angle between t

Keywords