Maistrelli G, Gerundini M, Bombelli R
Orthopaedic Surgery, University of Toronto, Ontario, Canada.
Orthop Rev. 1986 May;15(5):271-9.
The mechanical basis responsible for the development of secondary osteoarthritis in adults and slipped capital femoral epiphysis in adolescents is discussed, with the role of the oblique weight-bearing surface in generating abnormal shearing forces in these two conditions emphasized. The same biomechanical principles have been found to apply to the acetabular component in total hip implants. A vertical cup position will lead to abnormal stress concentration in the outer edge of the bone implant interface with an increase in shearing forces. The form of the subchondral bone sclerosis on the radiograph has been studied and found to correlate well with the distribution of stresses in the bone implant interface.
本文讨论了成人继发性骨关节炎和青少年股骨头骨骺滑脱发展的力学基础，并强调了斜向负重面在这两种情况下产生异常剪切力的作用。已发现相同的生物力学原理适用于全髋关节植入物中的髋臼组件。髋臼杯垂直放置会导致骨植入物界面外缘出现异常应力集中，剪切力增加。对X线片上软骨下骨硬化的形态进行了研究，发现其与骨植入物界面的应力分布密切相关。
