全膝关节置换术中患者特异性器械系统确定的对线准确性。
The Accuracy of Alignment Determined by Patient-Specific Instrumentation System in Total Knee Arthroplasty.
作者信息
Kim Kwangkyoun, Kim Jungsung, Lee Dokyoung, Lim Sohui, Eom Jiyoon
机构信息
Departments of Orthopedic Surgery.
Medical Engineering, Konyang University College of Medicine, Daejeon, Korea.
出版信息
Knee Surg Relat Res. 2019 Mar 1;31(1):19-24. doi: 10.5792/ksrr.18.038.
PURPOSE
The aim of this study is to assess the accuracy of alignment determined by patient-specific instrumentation system in total knee arthroplasty(TKA).
MATERIALS AND METHODS
Twenty-seven TKAs using patient-specific instrument were reviewed. The intraoperative pin location determined by the patient-specific guide was recorded using imageless navigation software. Data recorded included tibial coronal alignment and posterior slope, femoral coronal alignment and sagittal alignment, and transepicondylar axis. A discrepancy within ±3° in each plane was considered an acceptable result.
RESULTS
On the tibia, an acceptable alignment was obtained in 24 (88.1%) in the coronal plane and 21 (77.8%) in the sagittal plane. On the femur, a satisfactory alignment was obtained in 25 (92.6%) in the coronal plane and 24 (88.1%) in the sagittal plane. Based on the transepicondylar axis, a satisfactory alignment was obtained in 23 (85.1%).
CONCLUSIONS
Satisfactory alignment was obtained in more than 85% of each plane of the femur and in the coronal plane of the tibia and relative to the transepicondylar axis. Sufficeint experience and precise preoperative planning are required to improve the accuracy of sagittal alignment of the tibia.
目的
本研究旨在评估全膝关节置换术（TKA）中患者特异性器械系统所确定的对线准确性。
材料与方法
回顾了27例使用患者特异性器械的全膝关节置换术。使用无图像导航软件记录由患者特异性导板确定的术中钢针位置。记录的数据包括胫骨冠状面对线和后倾坡度、股骨冠状面对线和矢状面对线以及经髁间轴。每个平面内±3°的差异被认为是可接受的结果。
结果
在胫骨上，冠状面有24例（88.1%）获得可接受的对线，矢状面有21例（77.8%）获得可接受的对线。在股骨上，冠状面有25例（92.6%）获得满意的对线，矢状面有24例（88.1%）获得满意的对线。基于经髁间轴，有23例（85.1%）获得满意的对线。
结论
在股骨的每个平面、胫骨的冠状面以及相对于经髁间轴，超过85%的病例获得了满意的对线。需要足够的经验和精确的术前规划来提高胫骨矢状面对线的准确性。
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