中国组织工程研究2016，Vol.20Issue(35)：5173-5179,7.DOI:10.3969/j.issn.2095-4344.2016.35.001
三维术前计划较二维模板测量更精确拟定人工膝关节置换假体型号
Accuracy of analog two-dimensional and digital three-dimensional preoperative templating for predicting implant size in total knee arthroplasty
摘要
Abstract
BACKGROUND:It is the key point to choose the right size of the prosthesis, and grasp the direction and thickness for osteotomy during total knee arthroplasty. In order to achieve the goal, accurate preoperative planning is very important. <br> OBJECTIVE:To compare the accuracy of preoperative templating in total knee arthroplasty using conventional two-dimensional (2D) and computed tomography (CT)-based three-dimensional (3D) procedures (templating on 3D image&surgical rehearsing on rapid prototype technology-models), and to confirm the necessity of 3D evaluation for preoperative planning. <br> METHODS:A total of 25 patients undergoing primary total knee arthroplasty were randomly selected, including 10 males and 15 females, at the age of 58 and 79 years old. 2D and 3D images were col ected from al patients. Preoperative templating was performed for each total knee arthroplasty using both conventional 2D radiographs and a CT-based 3D image model. Accuracies with regard to the predicted and actual implant sizes were determined for each procedure. <br> RESULTS AND CONCLUSION:The 3D procedure was found to be more accurate in predicting implant size of 80%femoral and 72%tibial components than those of the 2D procedure (4%femoral and 12%tibial components). Significant differences in the consistent rate of femoral and tibial prosthesis models were detected significantly (P<0.05). Kappa coefficient statistics demonstrated that goodness of fit of prosthesis model was good in 3D preoperative templating. Results confirmed that the superiority of 3D preoperative templating over 2D conventional evaluation is in predicting implant size, and provides more comprehensive information on skeletal anatomy.关键词
骨科植入物/人工假体/膝关节/全膝关节置换/假体尺寸/三维/计算机辅助设计分类
医药卫生引用本文复制引用
许杰,李登,张应彬,黄玉麟,蔡志清,马若凡..三维术前计划较二维模板测量更精确拟定人工膝关节置换假体型号[J].中国组织工程研究,2016,20(35):5173-5179,7.基金项目
广东省科技计划项目(2014A020215009)@@@@the Science and Technology Plan Program of Guangdong Province, No.2014A020215009 （2014A020215009）
