Hip joint forces in sheep
Hip joint forces in sheep
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DOI：
10.1016/s0021-9290(99)00068-8
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发表时间：
1999-08-01
影响因子：
2.4
通讯作者：
Rohlmann, A
中科院分区：
文献类型：
--
作者：
Bergmann, G;Graichen, F;Rohlmann, A
在绵羊股骨近端测试骨科植入物需要了解作用在该关节上的接触力。遥测植入物用于长期测量这些力量在四只羊，主要是在跑步机行走。同一只羊的关节力每天变化很大，个体间差异也很明显。行走过程中的力量大多高于以前的短期测量。在中等步行速度下，体重的65-140%范围内的负荷是典型的。与慢速行走相比，快速行走仅增加20%的力量。在站姿阶段开始时，踩在地上，开始自由奔跑，导致力量非常高。观察到的最高值几乎是体重的四倍。与人类一样，在整个站立阶段，高力的方向在额状面中仅略有变化，但在横向面中变化更大。关于力的大小及其方向，绵羊似乎是测试股骨近端人体植入物的良好模型。（C）1999 Elsevier Science Ltd.保留所有权利。
Testing orthopaedic implants at the proximal femur of sheep requires knowledge of the contact forces acting on this joint. Telemeterized implants were used for long-term measurements of these forces in four sheep, mostly during treadmill walking. Joint forces in the same sheep varied widely from day to day and interindividual differences were also pronounced. Forces during walking were mostly higher than in previous short-term measurements. At medium walking speed, loads in the range of 65-140% of the body weight were typical. Fast walking increased the forces by only 20%, compared to slow speed. Stomping on the ground at the beginning of the stance phase and starting to run freely led to very high forces. The highest values observed were nearly four times the body weight. As in humans, the directions of high forces varied only slightly in the frontal plane throughout the whole stance phase but much more in the transverse plane. With regard to the force magnitudes and their directions, sheep seem to be a good model for testing human implant at the proximal femur. (C)1999 Elsevier Science Ltd. All rights reserved.