凸轮型髋关节撞击综合征患者CT及MRI影像学特征及诊断价值

目的探讨凸轮型髋关节撞击综合征(FAI)患者CT、MRI影像学特征及其诊断价值。方法回顾性分析我院2015年1月至2019年1月期间收治的70例FAI患者的影像学资料,其中接受CT检查者37例,MRI检查者33例,选择同时期因非股骨近端病变、无FAI症状患者26例为对照组,接受CT检查者14例,进行MRI检查者12例。比较FAI组与对照组患者的α角、EE角,以关节镜检查结果为"金标准",评价MRI诊断髋臼盂唇损伤的价值。结果 CT、MRI图像测量结果显示,FAI组患者α角显著高于对照组(P<0.05),组间EE角无显著差异(P>0.05);MRI诊断髋臼盂唇损伤的灵敏度、特异度、准确率分别为76.67%、100%、78.79%。结论 CT可显示凸轮型FAI患者股骨、髋臼的解剖学异常和细微骨质异常,MRI可显示患者的软组织损伤,两种检查方法均有较高的诊断价值。

Imaging Features and Diagnostic Value of CT and MRI of Patients with Camtypefemoroacetabular Impingement

Objective To explore the imaging features and diagnostic value of CT and MRI of patients with camtype femoroacetabular impingement(FAI).Methods A retrospective analysis was performed on imaging data of 70 FAI patients admitted to our hospital from January 2015 to January 2019,including 37 patients with CT and 33 patients with MRI.26 patients with non-femoral proximal lesions and no FAI symptoms at the same time period were selected as the control group,including 14 patients with CT and 12 patients with MRI.Theαangle and EE angle were compared between the FAI group and the control group.The value of MRI in the diagnosis of acetabular labrum injury was evaluated by taking arthroscopy results as golden standards.Results The image measurement results of CT and MRI showed that theαangle in the FAI group was significantly higher than that in the control group(P>0.05),and there was no significant difference in the EE angle(P>0.05).The sensitivity,specificity and accuracy rate of MRI were 76.67%,100%and 78.79%respectively in the diagnosis of acetabular labrum injury.Conclusion CT can show anatomical abnormalities and subtle bone abnormalities of femur and acetabulum in patients with cam-type FAI.MRI can show soft tissue injury in patients.Both methods have a high diagnostic value.