Twice cutting method reduces tibial cutting error in unicompartmental knee arthroplasty
Twice cutting method reduces tibial cutting error in unicompartmental knee arthroplasty
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DOI：
10.1016/j.knee.2014.11.015
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发表时间：
2016-01-01
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：
Inui, Hiroshi;Taketomi, Shuji;Tanaka, Sakae
背景：截骨错误可能是单髁膝关节置换术（UKA）中对线不良的原因之一。全膝关节置换术中的切割误差量已有报道。然而，没有人调查UKA的切割误差。本研究的目的是揭示在UKA的切割误差量时，使用开放切割导向器，并澄清是否使用相同的切割导向器水平切割胫骨两次减少切割误差在UKA.Methods：我们测量了胫骨切割导向器的对齐，第一次切割切割表面和第二次切割切割表面使用导航系统在50 UKAs。切割误差被定义为切割导向器和切割表面之间的角度差。平均绝对第一次切割误差为1.9度（1.1度内翻）在冠状面和1.1度（前倾角0.6度），而第二次切割的平均绝对切割误差在冠状面为1.1度（内翻0.6度），在矢状面为1.1度（前倾角0.4度）。结论：在UKA手术中，使用同一截骨导向器两次水平截骨可减少冠状面截骨误差。(C)2014爱思唯尔有限公司版权所有。
Background: Bone cutting error can be one of the causes of malalignment in unicompartmental knee arthroplasty (UKA). The amount of cutting error in total knee arthroplasty has been reported. However, none have investigated cutting error in UKA. The purpose of this study was to reveal the amount of cutting error in UKA when open cutting guide was used and clarify whether cutting the tibia horizontally twice using the same cutting guide reduced the cutting errors in UKA.Methods: We measured the alignment of the tibial cutting guides, the first-cut cutting surfaces and the second cut cutting surfaces using the navigation system in 50 UKAs. Cutting error was defined as the angular difference between the cutting guide and cutting surface.Results: The mean absolute first-cut cutting error was 1.9 degrees (1.1 degrees varus) in the coronal plane and 1.1 degrees (0.6 degrees anterior slope) in the sagittal plane, whereas the mean absolute second-cut cutting error was 1.1 degrees (0.6 degrees varus) in the coronal plane and 1.1 degrees (0.4 degrees anterior slope) in the sagittal plane. Cutting the tibia horizontally twice reduced the cut ring errors in the coronal plane significantly (P < 0.05).Conclusion: Our study demonstrated that in UKA, cutting the tibia horizontally twice using the same cutting guide reduced cutting error in the coronal plane. (C) 2014 Elsevier B.V. All rights reserved.