BACKGROUND Ankle fractures are common lesions of the lower limbs.Approximately 40%of ankle fractures affect the posterior malleolus(PM).Historically,PM osteosynthesis was recommended when PM size in X-ray images was g...BACKGROUND Ankle fractures are common lesions of the lower limbs.Approximately 40%of ankle fractures affect the posterior malleolus(PM).Historically,PM osteosynthesis was recommended when PM size in X-ray images was greater than 25%of the joint.Currently,computed tomography(CT)has been gaining traction in the preoperative evaluation of ankle fractures.AIM To elucidate the similarity in dimensions and to correlate PM size in X-ray images with the articular surface of the affected tibial plafond in the axial view on CT(AXCT)of a PM fracture.METHODS Eighty-one patients(mean age:39.4±13.5 years)were evaluated(54.3%were male).Two independent examiners measured PM size in profile X-ray images(PMXR)and sagittal CT(SAGCT)slices.The correlation of the measurements between the examiners and the difference in the PM fragment sizes between the two images were compared.Next,the PM size in PMXR was compared with the surface of the tibial plafond involved in the fracture in AXCT according to the Haraguchi classification.RESULTS The correlation rates between the examiners were 0.93 and 0.94 for PMXR and SAGCT,respectively(P<0.001).Fragments were 2.12%larger in SAGCT than in PMXR(P=0.018).In PMXR,there were 56 cases<25%and 25 cases≥25%.When PMXR was<25%,AXCT corresponded to 10.13%of the tibial plafond.When PMXR was≥25%,AXCT was 24.52%(P<0.001).According to the Haraguchi classification,fracture types I and II had similar PMXR measurements that were greater than those of type III.When analyzing AXCT,a significant difference was found between the three types,with II>I>III(P<0.001).CONCLUSION PM fractures show different sizes using X-ray or CT images.CT showed a larger PM in the sagittal plane and allowed the visualization of the real dimensions of the tibial plafond surface.展开更多
目的:比较数字化摄影(DR)与多层螺旋CT(MSCT)在诊断足踝部骨折及关节脱位的应用价值。方法:分析2010年8月至2012年8月收治的52例足踝部骨折及脱位患者(男37例,女15例,年龄15～49岁)的DR及MSCT资料,并与手术或出院诊断对比,比较两者诊断...目的:比较数字化摄影(DR)与多层螺旋CT(MSCT)在诊断足踝部骨折及关节脱位的应用价值。方法:分析2010年8月至2012年8月收治的52例足踝部骨折及脱位患者(男37例,女15例,年龄15～49岁)的DR及MSCT资料,并与手术或出院诊断对比,比较两者诊断骨折数量、关节脱位的区别,采用R统计软件Wilcoxon符号秩检验(Wilcoxon signed rank test)进行统计学分析。结果:52例MSCT结果与术后或出院诊断结果完全相符。MSCT诊断骨折172处,DR诊断骨折98处,两者在骨折诊断中差异有统计学意义(V=1081,P<0.05);MSCT诊断关节脱位24例,DR诊断关节脱位16例,两者在关节脱位诊断中差异有统计学意义(V=21,P<0.05)。MSCT纠正DR骨折诊断定位6例。结论:MSCT对足踝部骨折及关节脱位的诊断优于DR。DR应首选2个部位的检查。当DR诊断结果不明确或与临床症状不相符时应选择MSCT及多平面重建(MPR)检查,可避免漏诊及误诊。展开更多
文摘BACKGROUND Ankle fractures are common lesions of the lower limbs.Approximately 40%of ankle fractures affect the posterior malleolus(PM).Historically,PM osteosynthesis was recommended when PM size in X-ray images was greater than 25%of the joint.Currently,computed tomography(CT)has been gaining traction in the preoperative evaluation of ankle fractures.AIM To elucidate the similarity in dimensions and to correlate PM size in X-ray images with the articular surface of the affected tibial plafond in the axial view on CT(AXCT)of a PM fracture.METHODS Eighty-one patients(mean age:39.4±13.5 years)were evaluated(54.3%were male).Two independent examiners measured PM size in profile X-ray images(PMXR)and sagittal CT(SAGCT)slices.The correlation of the measurements between the examiners and the difference in the PM fragment sizes between the two images were compared.Next,the PM size in PMXR was compared with the surface of the tibial plafond involved in the fracture in AXCT according to the Haraguchi classification.RESULTS The correlation rates between the examiners were 0.93 and 0.94 for PMXR and SAGCT,respectively(P<0.001).Fragments were 2.12%larger in SAGCT than in PMXR(P=0.018).In PMXR,there were 56 cases<25%and 25 cases≥25%.When PMXR was<25%,AXCT corresponded to 10.13%of the tibial plafond.When PMXR was≥25%,AXCT was 24.52%(P<0.001).According to the Haraguchi classification,fracture types I and II had similar PMXR measurements that were greater than those of type III.When analyzing AXCT,a significant difference was found between the three types,with II>I>III(P<0.001).CONCLUSION PM fractures show different sizes using X-ray or CT images.CT showed a larger PM in the sagittal plane and allowed the visualization of the real dimensions of the tibial plafond surface.
文摘目的:比较数字化摄影(DR)与多层螺旋CT(MSCT)在诊断足踝部骨折及关节脱位的应用价值。方法:分析2010年8月至2012年8月收治的52例足踝部骨折及脱位患者(男37例,女15例,年龄15～49岁)的DR及MSCT资料,并与手术或出院诊断对比,比较两者诊断骨折数量、关节脱位的区别,采用R统计软件Wilcoxon符号秩检验(Wilcoxon signed rank test)进行统计学分析。结果:52例MSCT结果与术后或出院诊断结果完全相符。MSCT诊断骨折172处,DR诊断骨折98处,两者在骨折诊断中差异有统计学意义(V=1081,P<0.05);MSCT诊断关节脱位24例,DR诊断关节脱位16例,两者在关节脱位诊断中差异有统计学意义(V=21,P<0.05)。MSCT纠正DR骨折诊断定位6例。结论:MSCT对足踝部骨折及关节脱位的诊断优于DR。DR应首选2个部位的检查。当DR诊断结果不明确或与临床症状不相符时应选择MSCT及多平面重建(MPR)检查,可避免漏诊及误诊。
