IMPACT-ABSORBING PROPERTIES OF THE HUMAN KNEE
IMPACT-ABSORBING PROPERTIES OF THE HUMAN KNEE
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DOI：
10.1302/0301-620x.69b5.3680348
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发表时间：
1987-11-01
影响因子：
--
通讯作者：
WALLACE, WA
中科院分区：
文献类型：
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作者：
HOSHINO, A;WALLACE, WA
对20例身体膝关节进行了生物力学研究，以探讨其负荷吸收机制。使用落在横断的股骨近端的重量施加冲击载荷，并使用负载传感器在横断的胫骨远端测量通过膝关节传递的力。随着半月板、关节软骨和软骨下骨的损伤或切除，传递的最大力逐渐增大。最令人惊讶的结果是植入的膝关节置换，其传递力达到完整膝关节的180%。结果表明，关节各节段均具有一定的冲击吸收性能，骨关节炎膝关节对冲击的吸收较正常膝关节小。植入膝关节的高冲击力表明，松质骨微骨折是可以预见的，并可能导致松动。
A biomechanical study has been carried out on 20 cadaveric knees to investigate their load-absorbing mechanism. The impact load was applied using a weight falling onto the transected proximal femur and the force transmitted through the knee was measured at the transected distal tibia using a load transducer. The peak force transmitted increased as, sequentially, meniscus, articular cartilage and subchondral bone were damaged or removed. The most striking result was found in an implanted knee replacement where the transmitted force reached 180% of that in the intact knee. The results show that the joint has an impact-absorbing property in each segment and that in the osteoarthritic knee there is less absorption of shock than in the normal knee. The high impact force in an implanted knee suggests that microfractures of the cancellous bone might be expected and may produce loosening.