Kim J K, Park J B, Weinstein J N, Marsh J L, Kim Y S, Loening S A
Department of Biomedical Engineering, College of Engineering, University of Iowa, Iowa City 52242.
Biomed Mater Eng. 1994;4(6):451-61.
The present study has examined the efficacy of shock wave treatment to aid in the removal of bone cement in human cadaver femora after femoral prosthesis implantation. The shock waves were applied to the specimens at four points, in the circumference 90 degrees apart, at three levels. Four hundred shocks were applied at each point with intensity level of 25 kV. Extraction time of the bone cement was significantly (p < 0.002) faster in the treated versus untreated control groups. The average extraction time was decreased by 32%. Shock wave treatment also reduced the amount of residual cement inside the bone surface by an average of 55% (p < 0.006). The number of shocks needed to remove the prosthesis from bone cement also decreased significantly (p < 0.001) after shock wave treatment.
本研究检测了冲击波治疗对股骨假体植入后人体尸体股骨中骨水泥清除的效果。冲击波在三个水平上，于相隔90度的圆周上的四个点施加到标本上。每个点以25 kV的强度水平施加400次冲击。与未治疗的对照组相比，治疗组骨水泥的取出时间显著加快（p < 0.002）。平均取出时间减少了32%。冲击波治疗还使骨表面内的残余水泥量平均减少了55%（p < 0.006）。冲击波治疗后，从骨水泥中取出假体所需的冲击次数也显著减少（p < 0.001）。
