Department of Orthopaedics and Orthopaedic Surgery, University Hospital Giessen and Marburg (UKGM), Klinikstraße 33, 35392, Giessen, Germany.
Laboratory of Biomechanics, Justus-Liebig-University Giessen, Klinikstraße 29, 35392, Giessen, Germany.
Int Orthop. 2019 Sep;43(9):2031-2037. doi: 10.1007/s00264-018-4126-1. Epub 2018 Sep 3.
The purpose of this study was to check the concept of the cementless Metha® short hip stem in order to find out whether proximal physiological load transfer can be achieved.
Fourty-three patients were included. Epidemiological factors were established. The Harris Hip Score was determined and measurement of bone mass density as well as osteodensitometric and radiological measurements was carried out pre-operatively, post-operatively, and after six, 12, 24, and 36 months.
Harris Hip Score improved from 55.9 ± 12.4 pre-operatively to 94.8 ± 8.2 after 36 months (p < 0.001). After initial reduction of bone density in zones 1 and 7 up to six months post-operatively, there was a steady approximation of bone density to the initial values (p < 0.05).
The Metha® short hip stem shows good clinical results. Furthermore, there is an increase of bone density in the proximal zones 1 and 7 between six and 36 months serving as a sign of physiological load transfer.
本研究旨在验证无水泥 Metha®短柄髋关节假体的概念，以明确其是否能实现近段生理性负荷传递。
纳入 43 例患者。确定了流行病学因素。术前、术后及术后 6、12、24 和 36 个月时测定 Harris 髋关节评分，并进行骨密度测量以及骨密度计和影像学测量。
Harris 髋关节评分从术前的 55.9±12.4 分提高到术后 36 个月时的 94.8±8.2 分（p<0.001）。术后 6 个月时，1 区和 7 区的骨密度最初降低，随后逐渐接近初始值（p<0.05）。
Metha®短柄髋关节假体具有良好的临床效果。此外，在术后 6 至 36 个月之间，近段 1 区和 7 区的骨密度增加，这是生理性负荷传递的标志。
