【摘要】 目的探讨X线平片、螺旋CT多平面重建(MPR)、表面遮盖显示法(SSD)及最大密度投影法(MIP)在Lisfranc关节骨折脱位诊断中的价值。材料与方法回顾性分析20例Lisfranc骨折脱位患者的X线平片、螺旋CT的MPR、SSD及MIP图像;所有病例均拍摄X线平片,其中有9例行螺旋CT扫描并用MPR、SSD及MIP技术获得多平面重组和三维重建图像。结果 X线平片及螺旋CT检查综合诊断20例Lisfranc骨折脱位,其中A型5例(25%),B型11例(55%),C型4例(20%);20例均有跖骨骨折,其中多发骨折16例(80%),单发骨折4例(20%);粉碎性骨折11例(55%)、横行骨折6例(30%)、斜行骨折3例(15%);伴有楔骨骨折5例(25%)、舟骨骨折3例(15%)、骰骨骨折2例(10%)。20例Lisfranc骨折脱位均影像清晰,诊断明确。结论 X线平片、螺旋CT多平面重组及三维重建在诊断Lisfranc骨折脱位中有重要的价值。更多还原

【Abstract】 Objective To evaluate the clinical application value of X-ray film,multiplanar reconstruction(MPR),shaded surface display(SSD) and maximum intensity projectionL¨MIPL with spiral CT to lisfranc fracture-dislocations.Methods The authors analyzed retrospectively the images of Radiograph,MPR,SSD and MIP in 20 patients of lisfranc fractures-dislocations.These cases were examined by X-ray,and 9 cases were scaned by spiral CT,then the multiplanar and three-dimensional images were obtained by techniques of MPR,SSD and MIP on a workstation.Results On the images of radiograph,MPR,SSD and MIP,20 cases lisfranc fracture-dislocations were found,inclding type A(5 cases,25%),type B(11 cases,55%),type C(4 cases,20%).20 cases had metatarsal fractures:multiple fracture 16 cases(80%),single fracture 4 cases(20%);comminuted fracture 11 cases(55%),transverse fracture 6 cases(30%),oblique fracture 4 cases(20%);and with cuneiform fracture 5 cases(20%),navicular fracture 3 cases(15%),cuboid fracture 2 cases(10%).20 cases lisfranc fracture-dislocations were displayed clearly and diagnosis definitely.Conclusion Radiograph,multiplanar reconstruction,shaded surface display and maximum intensity projection with spiral CT are the important methods to diagnose lisfranc fracturedislocations.更多还原