模拟负重下全下肢CT定位像在全膝关节置换术中的应用  

Application of Whole Leg Radiograph Using CT by Weight-bearing Simulation in Total Knee Arthroplasty

作　　者：谢友洋 夏云宝[2] 何俊山[2] 石威[2] 王元杰[2] 曹阳 

机构地区：[1]无锡市惠山区人民医院放射科,江苏无锡214187 [2]解放军101医院放射科,江苏无锡214044

出　　处：《医疗卫生装备》2014年第1期90-91,共2页Chinese Medical Equipment Journal

摘　　要：目的:模拟负重下全下肢CT定位像在全膝关节置换术中的临床应用。方法:应用GE 64排螺旋CT机对35例拟行全膝关节置换的患者在模拟负重下进行全下肢定位扫描,运用CT定位片扫描程序,选择正位定位模式,通过一次性连续曝光从双髋扫描至双踝。将扫描的图像传至AW4.4工作站,通过工作站内的相关工具软件对下肢力线和相关角度等进行定量测量和分析。结果:所有下肢全长影像上双髋关节、股骨、膝关节、胫腓骨、踝关节均能够清晰显示,对比度一致。35例患者膝关节内翻的32例,外翻的3例。对所有患者予以手术治疗,术后复查证实成功率达到100%。结论:模拟负重下全下肢CT定位像,在全膝关节置换术前计划和术后评估中完全达到临床要求,对术前指导和术后评价具有重要的临床意义。Objective To explore the clinical application of the whole leg radiograph using CT by weight-beating simulation in total knee arthroplasty. Mothods Totally 35 patients desired to undergo total knee arthoplasty were examined by weight- beating whole leg radiograph with GE 64-slice spiral CT. CT localization scanning program and frontal localization mode were used for the single continuous exposure with the scanning range from the hips to the ankles. The acquired images were transmitted to AW4.4 workstation, quantitative measurement and analyses were carried out with the workstation software for the force lines and angles of the lower limbs.Results The hip joint, femoral bone, knee joint, tibiofibula and ankle joint could be displayed clearly with the consistent contrast. Of the 35 patients, there were 32 ones of knee joint bowleg and 2 ones of valgus, who went through the operation with the success rate of 100%.Conclusion The whole leg radiograph using CT by weight-beating simulation is of great significance for the pre-operation plan and post-operation evaluation of otal knee arthroplasty.

关 键 词：模拟负重 下肢全长片 螺旋CT 全膝关节置换术 

分 类 号：R687.4[医药卫生—骨科学]