Del Gaizo Daniel, Soileau Elizabeth S, Lachiewicz Paul F
Department of Orthopaedics, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
J Knee Surg. 2009 Oct;22(4):284-93. doi: 10.1055/s-0030-1247765.
The value of preoperative templating for primary total knee arthroplasty (TKA) has recently been questioned. In our clinical practice, preoperative templating is valuable for sizing components and achieving optimal coronal alignment. We preoperatively templated the size of femoral and tibial components, the distal femoral valgus cut, and the proximal tibial cut for 200 primary TKAs. Preoperative templating predicted the exact size of 165 (82.5%) femoral and 159 (79.5%) tibial components, with 194 (97%) femoral and 185 (92.5%) tibial components templated to within one size used. Postoperative tibiofemoral alignment was within +/- 3 degrees of the goal alignment in 189 (94.5%) knees. Postoperative femoral and tibial component coronal alignment was within +/- 3 degrees of the goal coronal alignment in 190 (95%) and 199 (99.5%) knees, respectively. The accuracy of component sizing in this study is greater than previously reported. The prevalence of alignment outliers in this study is less than previously reported for conventional techniques.
原发性全膝关节置换术（TKA）术前模板的价值最近受到了质疑。在我们的临床实践中，术前模板对于确定假体组件尺寸和实现最佳冠状位对线非常有价值。我们对200例原发性TKA术前进行了股骨和胫骨组件尺寸、股骨远端外翻截骨以及胫骨近端截骨的模板测量。术前模板测量准确预测了165个（82.5%）股骨组件和159个（79.5%）胫骨组件的确切尺寸，194个（97%）股骨组件和185个（92.5%）胫骨组件的模板测量尺寸与实际使用尺寸相差在一个型号以内。189个（94.5%）膝关节术后胫股对线在目标对线的±3°范围内。术后股骨和胫骨组件冠状位对线分别在190个（95%）和199个（99.5%）膝关节的目标冠状位对线的±3°范围内。本研究中假体组件尺寸测量的准确性高于先前报道。本研究中对线异常值的发生率低于先前报道的传统技术。
