Effect of Body Mass Index on Limb Alignment After Total Knee Arthroplasty

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• 作者：Chris S. Estes ; Kenneth J. Schmidt ; Ryan McLemore ; Mark J. Spangehl ; Henry D. Clarke
• 关键词：total knee arthroplasty ; body mass index ; Mal-alignment ; obesity ; complications
• 刊名：The Journal of Arthroplasty
• 出版年：2013
• 出版时间：September, 2013
• 年：2013
• 卷：28
• 期：8_supp_S
• 页码：101-105
• 全文大小：551 K

文摘

Prior studies have reported increased failure rates in obese patients with postoperative limb mal-alignment. This study was undertaken to determine if a relationship exists between postoperative limb alignment and BMI in patients undergoing primary TKA performed with mechanical instruments. An IRB-approved retrospective review of 196 knees was undertaken. Limb alignment was determined on full-length, standing, hip-to-ankle x-rays, preoperatively and postoperatively. The effects of gender, side, preoperative mechanical alignment and BMI on postoperative alignment were analyzed via multivariate regression analysis. Both preoperative mechanical limb alignment (P < 0.001) and BMI (P = 0.009) had a significant effect on postoperative limb alignment following TKA performed with mechanical instruments.