股骨疲劳性骨折CT、MRI影像特点分析

目的探讨股骨疲劳性骨折的CT、MRI影像特点。方法选取2014年5月至2018年5月我院收治的疑似股骨疲劳性骨折的42例患者,所有患者均行MRI以及CT检查,以关节镜检查结果为金标准,分析两种检查手段对股骨疲劳性骨折的诊断价值以及影像学特点。结果42例疑似股骨疲劳性骨折患者中,关节镜检查确诊20例为股骨疲劳性骨折,其中0级为8例,1级为7例,2级为3例,3级为1例,4级为1例。MRI诊断股骨疲劳性骨折的准确性为88.10%,灵敏度为90.00%,特异度为86.36%,阳性预测值为85.71%,阴性预测值为90.48%,均显著高于CT的50.00%、55.00%、45.45%、47.83%、52.63%(P<0.05)。结论CT与MRI在股骨疲劳性骨折的诊断中均有一定的价值,MRI诊断效能较为显著,必要时可联合两种方法进行诊断。

Analysis on the CT and MRI Imaging Features of Femur Fatigue Fracture

Objective To analyze the CT and MRI imaging features of femur fatigue fracture.Methods 42 patients with suspected femur fatigue fracture admitted to our hospital from May 2014 to May 2018 were selected.All patients were examined with MRI and CT.With the results of arthroscopy as the gold standard,the diagnostic value and imaging characteristics of two examination methods for femur fatigue fracture were analyzed.Results Of the 42 patients with suspected femur fatigue fracture,20 were diagnosed as femur fatigue fracture by arthroscopy,including 8 cases of grade 0,7 cases of grade 1,3 cases of grade 2,1 case of grade 3 and 1 case of grade 4.The accuracy,sensitivity,specificity,positive predictive value and negative predictive value of MRI in the diagnosis of femur fatigue fracture were 88.10%,90.00%,86.36%,85.71%and 90.48%respectively,significantly higher than 50.00%,55.00%,45.45%,47.83%and 52.63%of CT,respectively(P<0.05).Conclusions CT and MRI have certain value in the diagnosis of femur fatigue fracture.MRI has significant diagnostic efficacy.If necessary,two methods can be combined for diagnosis.