计算机手术导航系统对股骨头表面假体植入精确度的研究  

Study on implantation accuracy of femoral head surface prostheses placement with computer navigated surgery

作　　者：侯明夫[1] 王黎明[1] 喻忠[1] 桂鉴超[1] 蒋纯志[1] 姚京东[1] 徐燕[1] 

机构地区：[1]南京医科大学附属南京第一医院骨科,江苏南京210006

出　　处：《生物医学工程与临床》2008年第1期50-52,共3页Biomedical Engineering and Clinical Medicine

摘　　要：目的研究非影像手术导航系统对股骨头表面假体植入位置的影响。方法25例股骨头坏死患者(共32髋),其中男性16例,女性9例,年龄(36±7)岁。随机分为2组,计算机导航手术组(导航组)11例(16髋),在导航系统下进行股骨头表面置换术,设定髋最佳植入柄颈角为0°,柄干角为140°;对照组14例(16髋)采用传统手术。术后测定假体植入的角度,进行手术评估。结果术后导航组植入股骨假体柄干角为(140.5±1.7)°,对照组为(135.9±6.5)°,导航组的股骨假体柄颈角为(0.30±1.40)°,对照组柄颈角为(-4.93±4.30)°,两组差异具有统计学意义(P<0.05)。Harris评分,导航组优14髋,良2髋;对照组优9髋,良4髋,中3髋。导航组无一例发生肢体缩短、旋转、内外翻畸形,对照组2例发生短缩畸形,1例内翻15°畸形。随访(14±4)个月,均无假体松动、脱位。结论在非影像手术导航系统下手术操作可以精确地植入假体,减少假体松动的发生,具有重要的临床价值。Objective To study the accuracy of femoral head surface component placement by non-imaging assisted surgery. Methods A total of 25 patients with femoral head osteonecrosis （32 hips ）, male 16 and female 9 with mean age （36 ± 7） years, were randomly divided into 2 groups. In computer navigated surgery group 11 patients （ 16 hips） with femoral head osteonecrosis were operated with non-imaging computer navigated surgery. According to the design of the study ,the femoral component was placed in best stem-graft angle of 140° and stem-neck angle of 0°. The control group enrolled 14 patients （ 16 hips ） operated with conventional mechanically guided procedure. Postoperative component position was measured. Results In the computer navigated surgery group, stem-graft angle achieved （140.5 ± 1.7 ）° and stem-neck angle achieved （0.3 ±1.4）°. In the control group, stem-graft angle were （135.9 ± 6.5 ）° and stem-neck angle were （-4.93 ± 4.30）°. The difference of stem femoral angle was demonstrated statistically significant （P 〈 0.05）. Conclusion The femoral head surface prostheses can be in planted accurately by non-imaging computer navigated surgery. It can reduce prostheses flexible with important clinical value.

关 键 词：髋关节 表面置换术 导航 

分 类 号：R687[医药卫生—骨科学]