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首页> 外文期刊>Journal of Biomechanics >Forces and moments telemetered from two distal femoral replacements during various activities.
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Forces and moments telemetered from two distal femoral replacements during various activities.

机译：在进行各种活动时，从两个股骨远端置换处测出的力和力矩。

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摘要

Two distal femoral replacements were instrumented to measure axial force, torque and bending moments in the prosthesis shaft. Data are reported up to 2.5 years for the following activities: uni- and bi-lateral standing, walking, stair climbing and descending, treadmill walking, jogging and jumping. In the first subject the greatest averaged peak shaft forces found were: jogging 3.6Bodyweight (BW), stair descending 3.1BW, walking 2.8BW, treadmill walking 2.75BW, and stair ascending 2.8BW. Bending moments about the antero-posterior axis (varus-valgus) and medio-lateral axis (flexion-extension) peaked in the range 8.5-9.8 and 4.7-7.6BWcm respectively, over the follow-up period. Axial torques peaked in the range 0.2-1.3BWcm, outwardly directed. At most follow-up sessions, forces and moments during jogging were generally greater than those for other gait activities. In the second subject forces and moments were generally only 45-70% of those in the first subject, due to inadequate musculature around the knee. The data can be applied to the design and testing of distal femoral replacements and even to total knee replacements, and contributes to the knowledge of forces acting in the distal femur during activity.
机译：使用两个股骨远端替代物来测量假体轴中的轴向力，扭矩和弯曲力矩。据报告，以下活动的数据长达2.5年：单侧和双向站立，行走，爬楼梯和下降，跑步机行走，慢跑和跳跃。在第一个主题中，发现的最大平均峰值轴力为：慢跑3.6体重（BW），楼梯下降3.1BW，行走2.8BW，跑步机行走2.75BW和楼梯上升2.8BW。在随访期间，前后轴（内翻-外翻）和中外侧轴（弯曲-伸展）的弯矩分别在8.5-9.8和4.7-7.6BWcm范围内达到峰值。轴向扭矩在0.2-1.3BWcm的范围内达到峰值，向外指向。在大多数后续活动中，慢跑过程中的力量和时刻通常大于其他步态活动的力量和时刻。在第二科目中，由于膝盖周围的肌肉不足，力量和力矩通常仅是第一科目中的45-70％。该数据可用于股骨远端置换甚至整个膝关节置换的设计和测试，并有助于了解活动过程中股骨远端的作用力。

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