Anderson Iain A, MacDiarmid Andrew A, Lance Harris M, Mark Gillies R, Phelps Rhona, Walsh W R
Bioengineering Institute, University of Auckland, Floor 6, 70 Symonds Street, Auckland, New Zealand.
J Biomech. 2003 Sep;36(9):1391-5. doi: 10.1016/s0021-9290(03)00158-1.
A novel method for the measurement of knee joint forces in-vivo is described. A thin (0.2mm) flexible electronic pressure sensor was inserted through a narrow arthroscopic portal into the osteoarthritic medial compartment of the knee joint. The sensor partially covered the load bearing area. The surgery was performed under local anaesthetic during normal arthroscopic examination following patient consent. Results are presented for 11 patients. The method was used in a pilot study to assess the effects of four valgus knee braces on medial compartment forces. An analysis of variance could not detect un-loading by any brace although there were large variations in force output. These variations may be attributable to shifts in the sensor position. In-vivo measurement of joint force is technically feasible.
本文描述了一种用于体内测量膝关节力的新方法。一个薄（0.2毫米）的柔性电子压力传感器通过狭窄的关节镜入口插入膝关节骨关节炎的内侧间室。该传感器部分覆盖了承重区域。手术在患者同意后，于局部麻醉下在正常关节镜检查期间进行。给出了11例患者的结果。该方法用于一项初步研究，以评估四种外翻膝关节支具对内侧间室力的影响。尽管力输出存在很大差异，但方差分析未检测到任何支具的卸载作用。这些差异可能归因于传感器位置的移动。关节力的体内测量在技术上是可行的。
