Department of Orthopaedic Surgery, Korea University Medical Center, Guro Hospital, Seoul, South Korea.
J Arthroplasty. 2012 Jun;27(6):1210-5. doi: 10.1016/j.arth.2011.12.011. Epub 2012 Jan 27.
We evaluated the postoperative mechanical axis deviation and clinical outcome according to bearing size, femoral component position, and tibial resection angle after unicompartmental knee arthroplasty (UKA). A total of 104 patients with 124 knees underwent Oxford phase 3 UKA. The overall changes in mechanical axis deviation and tibiofemoral angle were significantly different according to bearing size (P = .001 and < .001), but they were not significantly different according to the tibial resection angle and femoral component position. The postoperative mechanical axis fell into the zone C or zone 2 in 108 knees (87%) and into the zone 3 or zone 4 in 16 cases (13%). One hundred eight cases, which had the mechanical axis passing the zone C or zone 2, did not show any progression of arthritis. Limb alignment is a function of the thickness of the bearing rather than alignments of femoral and tibial implant.
我们根据单髁膝关节置换术后的轴承尺寸、股骨组件位置和胫骨截骨角度评估了术后机械轴偏差和临床结果。共有 104 名患者的 124 膝接受了牛津第三阶段 UKA。根据轴承尺寸，机械轴偏差和胫股角的整体变化有显著差异（P =.001 和 <.001），但与胫骨截骨角度和股骨组件位置无关。108 膝（87%）术后机械轴落入 C 区或 2 区，16 膝（13%）落入 3 区或 4 区。108 例机械轴通过 C 区或 2 区的病例，关节炎无进展。肢体对线是轴承厚度的功能，而不是股骨和胫骨植入物的对线。
