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人工关节磨损颗粒诱导钛合金植入物松动的实验研究
引用本文:王友,薛文东,戴克戎.人工关节磨损颗粒诱导钛合金植入物松动的实验研究[J].医用生物力学,1999,14(3):171-174.
作者姓名:王友  薛文东  戴克戎
作者单位:上海第二医科大学附属第九人民医院!骨科200011
摘    要:为比较不同人工关节微小磨损颗粒诱导假体周围骨吸收及假体松动生物效应的差异。方法:本实验采用X线摄片骨密度灰度值测定以及植入物推出力学强度测试等手段,对Ti-6Al-4V,Co-Cr-Mo与UHMWPE三种微小颗粒诱导的假体周围骨结构改变及假体松动作定量分析。结果统计分析显示,直径2.5微米的Ti-6Al-4V颗粒诱导植入物旁骨吸收与植入物松动的程度明显低于相同直径的Co-Cr-Mo颗粒或UHMWP

关 键 词:磨损颗粒  人工关节  松动  钛合金植入物

EXPERIMENTAL STUDY ON WEAR PARTICLE INDUCED ASEPTIC LOOSENING OF TITANIUM ALLOY IMPLANT
Y. Wang, W.D.Xue, Ke-rong Dai.EXPERIMENTAL STUDY ON WEAR PARTICLE INDUCED ASEPTIC LOOSENING OF TITANIUM ALLOY IMPLANT[J].Journal of Medical Biomechanics,1999,14(3):171-174.
Authors:Y Wang  WDXue  Ke-rong Dai
Abstract:To compare the amount of periimplant bone resorption and the degree of aseptic looseningof the implant induced by various kinds of wear particles released from artificial joint. Method:Three special particles of UHMWPE, Ti-6Al-4V and Co -- Cr-- Mo were used respectively to inducethe change of periimplant bone structure and the loosening of a well-fixed implant made of titaniumalloy in rabbit femur or tibia. The bone structure was observed from X-ray film with computerizedimage analysis system(CIAS) and implant loosening was assayed by push-out test. All data werestatistically analysed. Results Ti-6Al-4V particle induced the less periimplant bone loss and the lesssevere implant loosening than UHMWPE particle or Co-Cr-Mo particle did. Conclusion: Variouskinds of wear particles with the same size and same amount can produce different degree of implantloosening.
Keywords:wear particle  artificial joint  loosening
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