Luring Christian, Perlick Lars, Bäthis Holger, Tingart Markus, Grifka Joachim
Department of Orthopedic Surgery, University of Regensburg, Germany.
Orthopedics. 2007 Nov;30(11):965-7. doi: 10.3928/01477447-20071101-15.
Rotational adjustment of the femoral component in total knee arthroplasty influences patellar tracking. Sixty patients underwent TKA; the femoral component was placed parallel to the epicondylar axis in 30 patients and the femoral component was placed in 3 degrees external rotation to the posterior condylar axis in 30 patients. The epicondylar axis was identified using an image-guided navigation system. Mean patellar shift was 2.65 degrees for the computer assisted group and 3.50 degrees for the control group. Mean patellar tilt was 4.88 degrees for the computer assisted group and 6.68 degrees for the control group. Aligning the femoral component parallel to the epicondylar axis leads to significantly better patellar tracking.
全膝关节置换术中股骨组件的旋转调整会影响髌骨轨迹。60例患者接受了全膝关节置换术；30例患者的股骨组件与上髁轴平行放置，30例患者的股骨组件相对于后髁轴外旋3度放置。使用图像引导导航系统确定上髁轴。计算机辅助组的平均髌骨移位为2.65度，对照组为3.50度。计算机辅助组的平均髌骨倾斜为4.88度，对照组为6.68度。将股骨组件与上髁轴平行对齐可显著改善髌骨轨迹。
