Incavo Stephen J, Coughlin Kathryn M, Pappas Charles, Beynnon Bruce D
Department of Orthopaedics and Rehabiliation, University of Vermont, Burlington, VT 05405, USA.
J Arthroplasty. 2003 Aug;18(5):643-8. doi: 10.1016/s0883-5403(03)00197-9.
The orientation of the femur, tibia, and patella are important considerations in total knee arthroplasty. Our goal was to describe the relationships between the femoral epicondylar (FE) axis, posterior femoral (PF) axis, posterior tibial (PT) axis, patellar (PAT) axis, and patellar ligament (PL). A secondary goal was to determine where the short axis of the tibial tray intersects the patellar ligament as a function of tibial component rotation. Thirty normal magnetic resonance imaging (MRI) scans were analyzed. Strong relationships were found between the FE and PAT axes (2 degrees +/- 3 degrees, r(2) = 0.73), and between the FE and PF axes (6 degrees +/- 2 degrees, r(2) = 0.77). When the tibial baseplate was aligned along the PT axis, 30% of the cases were in an ideal position. When the FE axis was used, 73% were ideal.
在全膝关节置换术中，股骨、胫骨和髌骨的方位是重要的考虑因素。我们的目标是描述股骨髁上（FE）轴、股骨后（PF）轴、胫骨后（PT）轴、髌骨（PAT）轴和髌韧带（PL）之间的关系。第二个目标是确定胫骨托的短轴与髌韧带相交的位置，作为胫骨组件旋转的函数。分析了30例正常磁共振成像（MRI）扫描。发现FE轴与PAT轴之间（2°±3°，r² = 0.73）以及FE轴与PF轴之间（6°±2°，r² = 0.77）存在密切关系。当胫骨基板沿PT轴对齐时，30%的病例处于理想位置。当使用FE轴时，73%是理想的。
