THA Retrievals: The Need to Mark the Anatomic Orientation of the Femoral Head.
THA Retrievals: The Need to Mark the Anatomic Orientation of the Femoral Head.
复制标题
THA 检索：标记股骨头解剖方向的需要。
DOI：
10.1016/j.arth.2015.01.030
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Brown,ThomasD
中科院分区：
文献类型：
--
作者：
Heiner,AnnelieseD;Kruger,KarenM;Tikekar,NishantM;Callaghan,JohnJ;Lannutti,JohnJ;Brown,ThomasD
本研究的假设是股骨头损伤的旋转方向将极大地影响对侧聚乙烯（PE）内衬的体积磨损率。在经验证的基于损伤特征的有限元模型中模拟了20个回收的钴铬股骨头的损伤。对于每次单独取出，股骨头围绕股骨颈轴的解剖方向以30°增量系统性变化。最大磨损方向与最小磨损方向之间的PE磨损率差异通常相当大，高达7倍。因此，在分析股骨头损伤对PE内衬磨损的影响时，了解正确的股骨头解剖方向非常重要。取出组配式股骨头的外科医生应定期标记这些部件的解剖方向。
The hypothesis of this study was that the rotational orientation of femoral head damage would greatly affect the volumetric wear rate of the opposing polyethylene (PE) liner. Damage on twenty retrieved cobalt–chromium femoral heads was simulated in a validated damage-feature-based finite element model. For each individual retrieval, the anatomic orientation of the femoral head about the femoral neck axis was systematically varied, in 30° increments. The PE wear rate differential between the maximum- versus minimum-wear orientations was often sizable, as high as 7-fold. Knowing the correct femoral head anatomic orientation is therefore important when analyzing the effects of femoral head damage on PE liner wear. Surgeons retrieving modular femoral heads should routinely mark the anatomic orientation of those components.