Preoperative tibiofemoral rotational alignment is a risk factor for component rotational mismatch in total knee arthroplasty
Preoperative tibiofemoral rotational alignment is a risk factor for component rotational mismatch in total knee arthroplasty
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DOI：
10.1016/j.knee.2021.02.028
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发表时间：
2021-03-17
期刊：
影响因子：
1.9
通讯作者：
Tanaka, Sakae
中科院分区：
文献类型：
--
作者：
Kawaguchi, Kohei;Inui, Hiroshi;Tanaka, Sakae
背景资料：据报道，股骨和胫骨部件之间的旋转不匹配是全膝关节置换术（TKA）失败的风险因素。然而，即使当每个组件在期望的角度内对齐时，仍可能发生旋转失配。因此，可能还有其他未知因素。本研究旨在研究TKA中部件旋转不匹配的风险因素。作者假设旋转不匹配的角度之间的显着相关性，不仅旋转对齐的组件，但也术前tibiofemoral旋转angle.Method：这项回顾性队列研究包括79个膝关节谁接受TKA。在术前和术后2周获得计算机断层扫描图像，用于部件位置测量。评价了胫骨和股骨部件之间的术后部件旋转不匹配角度以及每个胫骨和股骨部件与解剖轴的旋转对准。此外，还调查了术前胫骨和股骨之间的旋转角度以及患者的人口统计学资料。结果：胫骨假体相对于股骨假体的内旋角度为1.8 °，内旋角度为11.3 °，外旋角度为7.3 °。多因素回归分析显示，术前胫股旋转对线及各假体旋转对线是影响术后假体旋转不匹配角的因素。结论：术前胫股旋转对线及各假体旋转对线是TKA术后假体旋转不匹配角的危险因素。(c)2021爱思唯尔有限公司版权所有。
Background: Rotational mismatch between the femoral and tibial components is reported to be a risk factor for unsuccessful total knee arthroplasty (TKA). However, the rotational mismatch can still occur even when each component is aligned within the desired angle. Therefore, there may be other unknown factors. This study aims to investigate a risk factor for component rotational mismatch in TKA. The authors hypothesized a significant correlation between the rotational mismatch angle and not only the rotational alignments of components, but also the preoperative tibiofemoral rotation angle.Method: This retrospective cohort study included 79 knees who underwent TKA. Computed tomography images were obtained preoperatively and 2 weeks after surgery for the component positional measurement. The postoperative component rotational mismatch angle between the tibial and femoral components and the rotational alignment of each tibial and femoral component to anatomical axes was evaluated. In addition, the preoperative rotational angle between the tibia and femur bones and patients' demographics were also investigated. The correlation between the postoperative component rotational mismatch angle and perioperative variables was analyzed to identify risk factors for component rotational mismatch.Results: The mean component rotational mismatch angle was 1.8 degrees of internal rotation of the tibial component relative to the femoral component, and the angle ranged from 11.3 degrees of internal rotation to 7.3 degrees of external rotation of the tibial component. Multivariate regression analysis showed that the preoperative rotational alignment between the tibia and femur and the rotational alignment of each component were influential factors in the postoperative component rotational mismatch angle.Conclusion: The preoperative tibiofemoral rotational alignment and the rotational alignment of each tibial and femoral component and are risk factors for the postoperative component rotational mismatch in TKA.(c) 2021 Elsevier B.V. All rights reserved.