Department of Orthopaedic Surgery, School of Medicine, Kyung Hee University, Seoul, Korea.
J Arthroplasty. 2010 Oct;25(7):1131-6. doi: 10.1016/j.arth.2009.10.005. Epub 2009 Dec 21.
The purpose is to identify whether the position of the tibial component in relation to the anatomical axis affects the postoperative mechanical axis in total knee arthroplasty for Korean patients. Preoperatively, 30 patients with varus deformity lesser than 10° were classified as group A, and 30 patients greater than 10° were classified as group B. Postoperatively, the distance between the midline of the tibial stem and anatomical axis (medial offset) was measured. The medial offsets were 2.5±1.9 mm in group A and 3.9±2.7 mm in group B (P=.021). The postoperative mechanical axes were varus 1.3±1.2° in group A and varus 2.5±2.0° in group B (P=.004). We think that the medial position of tibial component in relation to the anatomical axis affects the measurement of postoperative mechanical axis in total knee arthroplasty.
目的是确定胫骨组件相对于解剖轴的位置是否会影响韩国患者全膝关节置换术后的机械轴。术前，将 30 名小于 10°的内翻畸形患者分为 A 组，将 30 名大于 10°的患者分为 B 组。术后，测量胫骨柄中线与解剖轴（内侧偏移量）之间的距离。A 组的内侧偏移量为 2.5±1.9mm，B 组为 3.9±2.7mm（P=.021）。A 组术后机械轴为内翻 1.3±1.2°，B 组为 2.5±2.0°（P=.004）。我们认为胫骨组件相对于解剖轴的内侧位置会影响全膝关节置换术后机械轴的测量。
