Joint gap measurement in total knee arthroplasty using a tensor device with the same articulating surface as the prosthesis
Joint gap measurement in total knee arthroplasty using a tensor device with the same articulating surface as the prosthesis
复制标题
使用与假体具有相同关节表面的张量装置测量全膝关节置换术中的关节间隙
DOI：
10.1007/s00402-014-1945-4
复制
发表时间：
2014
影响因子：
2.3
通讯作者：
Y. Kadoya
中科院分区：
文献类型：
--
作者：
Y. Matsui;S. Nakagawa;Y. Minoda;S. Mizokawa;Yoshio Tokuhara;Y. Kadoya
背景我们开发了一种新的张量来测量全膝关节置换术（TKA）中膝关节屈曲时的关节间隙。该张量器具有与胫骨衬垫相同的关节形状，包括立柱结构和股胫关节面曲率，用于在与TKA术后相同的条件下测量术中差距。本研究的目的是检查新的张量间隙测量的精度implantation.MethodsWe进行TKA使用的改进的间隙技术在四个尸体膝盖和测量的差距，使用新的张量。使用由两名外科医生至少两次确定的168个间隙测量值分析张量的观察者内和观察者间误差。此外，间隙在固定平台后稳定TKA测量在七个位置与膝盖弯曲从伸展到fullflex.ResultsThe观察者间和观察者内的误差分别为0.8和0.3毫米，分别表示精确和可重复的间隙测量。髌骨复位位植入前的间隙在伸展时为12.1 mm，在90°屈曲时为12.5 mm。植入后的间隙分别为9.1，12.9，13.1，13.5，13.8，13.3，和10.1 mm，在0°，30°，45°，60°，90°，120°，和完全屈曲，分别为。尽管植入前的关节间隙在伸展和90°屈曲时平行且相等，但植入后的关节间隙在整个膝关节屈曲过程中变化。在操作过程中应考虑差距的这一特征。
BackgroundWe developed a new tensor to measure the joint gap throughout knee flexion during total knee arthroplasty (TKA). This tensor has the same articular shape as that of the tibial liner, including the post structure and the curvature of femorotibial articular surface, to measure the gap intraoperatively under the same conditions as after TKA. The present study aimed to examine the precision of the new tensor for gap measurement after implantation.MethodsWe performed TKA using the modified gap technique in four cadaveric knees and measured the gaps using the new tensor. The intra-observer and inter-observer error of the tensor was analyzed using 168 measurements of the gaps as determined at least twice by two surgeons. In addition, the gaps in rotating-platform posterior-stabilized TKA were measured at seven positions with the knee bending from extension to full flexion.ResultsThe inter-observer and intra-observer errors were 0.8 and 0.3 mm, respectively, indicating precise and reproducible gap measurement. The gaps before implantation in reduced patellar position were 12.1 mm at extension and 12.5 mm at 90° flexion. The gaps after implantation were 9.1, 12.9, 13.1, 13.5, 13.8, 13.3, and 10.1 mm at 0°, 30°, 45°, 60°, 90°, 120°, and full flexion, respectively.ConclusionsThe new tensor provides precise and reproducible measurements. Although the joint gap before implantation was parallel and equal at extension and 90° flexion, the joint gap after implantation was variable throughout knee flexion. This feature of the gap should be considered during the operation.
DOI：
10.1115/1.2354201
发表时间：
2006-12-01
影响因子：
1.7
作者：
Matsumoto, Tomoyuki;Muratsu, Hirotsugu;Kurosaka, Masahiro
通讯作者：
Kurosaka, Masahiro