Brilhault Jean M, Ries Michael D
Department of Orthopaedic Surgery, C.H.R.U. de Tours, Université François-Rabelais de Tours, Tours 37044, France.
Knee. 2012 Mar;19(2):112-5. doi: 10.1016/j.knee.2011.02.005. Epub 2011 Apr 14.
We questioned whether the use of offset femoral stem would result in modifying the posterior femoral condylar offset (PFCO) in revision knee arthroplasty (RTKA). We measured both PFCO and stem alignment on lateral radiographs of two cohorts: 91 knees with straight stems and 35 knees with offset coupled stems. A higher PCOR was observed in knees with an offset stem compared to knees with straight stem. Knees with an offset stem had a better alignment within the intramedullary canal. Our conclusion is that the use of a modular offset coupler with femoral stem in RTKA compared to a modular straight stem both increases the posterior condylar offset and improves alignment of the stem within the intramedullary canal.
我们质疑在翻修全膝关节置换术（RTKA）中使用偏置股骨柄是否会导致股骨后髁偏距（PFCO）发生改变。我们在两个队列的侧位X线片上测量了PFCO和柄的对线情况：91例使用直柄的膝关节和35例使用偏置连接柄的膝关节。与使用直柄的膝关节相比，使用偏置柄膝关节的PCOR更高。使用偏置柄的膝关节在髓腔内的对线更好。我们的结论是，与模块化直柄相比，在RTKA中使用带有股骨柄的模块化偏置连接装置既增加了后髁偏距，又改善了柄在髓腔内的对线。
