Objective To research the significance of digital orthopaedic technology application in the se-lection and placement of THA prosthesis .Methods Forty-one patients underwent THA from May 2007 to Apr. 2015 were choosen ,among whom 21 cases were male and 18 cases were female with an average age of 62 ( 58-79 ) years.Nineteen patients (21 hips) with the aid of preoperative CT 3D reconstruction and Mimics 17.0 to select THA prosthesis were as the observation group and another 20 patients (23 hips) with X-ray imaging template to se-lect THA prosthesis were as the control group .THA prosthesis accuracy after the operation was compared between the two groups .Results Totally 39 cases ( 44 hips ) were followed up with a mean period of 13.1 ( 9 to 23 ) months.The wrong selection number of THA prosthesis in the observation group was 4,while the wrong selection number of THA prosthesis in the control group was 12.The accuracy (80.9%) of THA prosthesis in the observa-tion group was better than that of the control group (47.8%),and the difference was significant .The excellent and good rate in the observation group (85.7%) was higher than that of the control group (73.9%), while the differ-ence was not significant(P=0.095).Conclusion Application of digital orthopaedic technology for THA prosthe-sis selection and placement can improve the accuracy of THA prosthesis placement .It is an ideal prosthesis selec-tion method.%目的：探究数字骨科技术在全髋关节置换术（ THA）中假体选择及置入的应用意义。方法选取自2007年5月～2015年4月收治的39例（44髋）行THA的患者资料，男性21例，女性18例；平均年龄62（58～79）岁。其中19例患者（21髋）为观察组，术前借助CT三维重建及医学影像控制系统Mimics17.0，通过在数字模型上测量进而选择用于患者的假体型号进行THA；另外20例（23髋）为对照组，利用X线显影模板选择置入假体型号进行THA。术后进行两组患者假体选择准确率的比较分析。结果39例（44髋）术后均获随访，平均随访时间为13.1（9～23）个月。观察组术前选择的THA假体型号与术中真实使用的假体型号差异个数为4个，对照组THA的假体型号差异个数为12个，观察组THA的假体准确率（80.9％）优于对照组（47.8％），并且差异有统计学意义（P＝0.044）；观察组THA术后优良率（85.7％）虽高于对照组THA术后优良率（73.9％），但组间差异无统计学意义（P＝0.095）。结论应用数字骨科技术辅助THA中假体的选择及置入，可以提高THA假体置入的准确性，是一种理想的假体选择方法。
展开▼
