An improved method for measuring tibiofemoral contact areas in total knee arthroplasty: a comparison of K-scan sensor and Fuji film
An improved method for measuring tibiofemoral contact areas in total knee arthroplasty: a comparison of K-scan sensor and Fuji film
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DOI：
10.1016/s0021-9290(99)00072-x
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发表时间：
1999-09-01
影响因子：
2.4
通讯作者：
Walsh, WR
中科院分区：
文献类型：
--
作者：
Harris, ML;Morberg, P;Walsh, WR
计算机化的实时薄膜压力传感器方法用于测量全膝关节置换术 (TKA) 设备中的胫股接触面积，与富士压敏薄膜技术相比，该方法更容易、更可靠且可重复。许多作者认为，TKA 装置内的接触面积和压力可以预测超高分子量聚乙烯 (UHMWPE) 胫骨插入物的磨损和失效。在本研究中，使用专为自由移动而设计的定制 TKA 测试夹具对两种接触面积测量技术（富士压敏薄膜和 K 扫描传感器系统）进行了比较，以便在任何负载配置中，组件都能找到并固定在其自己的“原位”位置。 K-scan 系统用于测量一种 TKA 设计在从 0 到 110 度屈曲的多个角度下的接触面积，负载相当于体重的 4、4.5 和 5 倍。为了进行比较，使用四个范围的富士胶片来测量相同屈曲角度但仅在 5 倍体重下的面积。使用富士胶片测量的接触面积比使用 K 扫描传感器测量的接触面积低 11-36% (p < 0.05)。 (C) 1999 Elsevier Science Ltd. 保留所有权利。
A computerised, real time, thin-film pressure transducer method is used to measure tibiofemoral contact area in total knee arthroplasty (TKA) devices that is easier and more reliable and reproducible as compared to the Fuji pressure-sensitive film technique. Many authors have suggested that contact areas and pressures within TKA devices can be a predictor of wear and failure of the ultra-high molecular weight polyethylene (UHMWPE) tibial insert. In this study, two contact area measurement techniques (Fuji pressure-sensitive Film and K-scan sensor system) were compared using a custom TKA testing jig designed for freedom of movement so that in any loading configuration the component found and seated in its own "home" position. The K-scan system was used to measure contact areas of one TKA design at several angles from 0 to 110 degrees flexion with loads equating to 4, 4.5, and 5 times body weight. For comparison, four ranges of Fuji film were used to measure areas at the same flexion angles but at 5 times body weight only. Contact areas measured with the Fuji films were 11-36% (p < 0.05) lower than those measured by the K-scan sensor. (C) 1999 Elsevier Science Ltd. All rights reserved.