MRI和关节镜诊断膝半月板损伤的比较研究

Comparative study of MRI and arthroscopy imaging in the diagnosis of meniscus injury of knee joint

目的 :探讨膝关节半月板损伤MRI和关节镜下的不同表现及其对半月板损伤的诊断意义。方法 :回顾性分析 10 2个半月板损伤的MRI表现和关节镜下图像。根据MRI信号改变将半月板损伤分为Ⅰ级、Ⅱ级、Ⅲ级 ,并与关节镜下所见对比 ,分别加以研究。结果 :根据MRI信号强度改变 ,10 2个膝关节中Ⅰ级损伤 3 4个 ,Ⅱ级损伤 2 7个 ,Ⅲ级损伤 41个。与关节镜检结果对比 ,MRI诊断半月板撕裂的敏感度 90 .0 % ,特异度 91.9% ,符合率 91.2 %。结论 :MRI在半月板损伤的诊断中具有极高价值 ,对指导患者的治疗具有重要的临床意义。

Objective:To study the various features of MRI and arthroscopic findings of meniscus injury of knee and their diagnostic value.Methods:MR and arthroscopic imaging of 102 injured menisci were retrospectively analyzed.The meniscus injuries were classified into grade Ⅰ to Ⅲ according to the signal features of meniscus on MR imaging,then the MRI features were compared with arthroscopic imagings respectively.Results:On the basis of signal intensity changes on MRI,there were 34 cases of grade Ⅰ injury,27 grade Ⅱ and 41 grade Ⅲ.Taking the result with arthroscopy as standard for the meniscus tear, the sensitivity of MRI was 90%,the specificity was 91.9%,and the diagnostic accuracy was 91.2%.Conclusion:MRI has great value and clinical significance in diagnosing meniscus injury of the knee.