Experimental Orthopedics, Department of Orthopedics, Medical University of Innsbruck, Innsbruck, Austria.
Department of Trauma Surgery, Medical University of Innsbruck, Innsbruck, Austria.
J Arthroplasty. 2014 Aug;29(8):1642-6. doi: 10.1016/j.arth.2014.03.028. Epub 2014 Mar 28.
In revision hip arthroplasty, bone loss can be compensated by impacting allograft material. Cleaning processes reduce the risk of bacterial and viral contamination. Cleaned allograft material was compared to native untreated allografts by using a uniaxial compression test. 30 measurements were performed for each group before and after compaction. Grain size distribution and weight loss were determined. A reduction in the amount of large bone fragments and a higher compaction rate were observed in the cleaned bone grafts. The cleaned bone chips presented with a better mechanical resistance to a compression force and a reduced flowability. The benefit of a cleaner and a mechanical stable graft material comes with the drawback that higher initial amounts of graft material are needed.
在髋关节翻修术中，可以通过撞击同种异体材料来补偿骨质流失。清洗过程可降低细菌和病毒污染的风险。通过单轴压缩试验，将清洗后的同种异体材料与未经处理的天然同种异体材料进行比较。每组在压实前后分别进行了 30 次测量，以确定粒度分布和重量损失。在清洗后的骨移植物中，观察到大骨碎片的数量减少和更高的压实率。清洗后的骨屑在抗压能力和流动性降低方面表现出更好的机械阻力。清洁和机械稳定的移植物材料的好处是需要更多的初始移植物材料。
