Modeling polyethylene wear acceleration due to femoral head dislocation damage.
Modeling polyethylene wear acceleration due to femoral head dislocation damage.
复制标题
对股骨头脱位损伤引起的聚乙烯磨损加速进行建模。
DOI：
10.1016/j.arth.2014.03.036
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Brown,ThomasD
中科院分区：
文献类型：
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作者：
Kruger,KarenM;Tikekar,NishantM;Heiner,AnnelieseD;Lannutti,JohnJ;Callaghan,JohnJ;Brown,ThomasD
在脱位和闭合复位操作中，擦伤和金属转移到股骨头通常伴随着髋臼壳接触。虽然从概念上讲，头部损伤会导致加速磨损，但关于这个问题的报道主要是轶事，关于这种影响的效力存在很大分歧。为了更好地理解这种关系，使用了物理验证的有限元(FE)模型来计算13次检索中特定头部损伤模式的聚乙烯磨损加速倾向。这些有限元模型估计，与未损坏头部的模拟相比，磨损平均增加了0.5个数量级。持续位错的数量与磨损加速度之间没有相关性。这些结果强调了植入物-轻柔闭合复位的重要性，并加强了成功复位脱位患者的磨损监测。
Scratching, scraping, and metal transfer to femoral heads commonly accompany acetabular shell contact during dislocation and closed reduction maneuvers. While head damage conceptually leads to accelerated wear, reports on this subject are mainly anecdotal, and differ widely on the potency of such effect. Towards better understanding this relationship, a physically validated finite element (FE) model was used to compute polyethylene wear acceleration propensity of specific head damage patterns on thirteen retrievals. These FE models estimated wear increases averaging half an order of magnitude when compared to simulations for undamaged heads. There was no correlation between the number of dislocations sustained and wear acceleration. These results underscore the importance of implant-gentle closed reduction, and heightened wear monitoring of successfully reduced dislocation patients.