膝关节盘状半月板撕裂的MRI诊断  

MRI Diagnosis of Tear of Discoid Meniscus

作　　者：吴杰[1] 朱小云[1] 赖天慧[1] 

机构地区：[1]江苏大学附属金坛医院影像科,江苏金坛213200

出　　处：《中国CT和MRI杂志》2014年第9期92-96,共5页Chinese Journal of CT and MRI

摘　　要：目的探讨MRI对膝关节盘状半月板撕裂的诊断价值。方法回顾性分析经关节镜证实的74例膝关节盘状半月板损伤的MRI影像学资料和临床资料,分析其MRI征象,将74例膝关节盘状半月板损伤分为无撕裂、单纯水平撕裂、放射状撕裂、联合水平撕裂、复杂撕裂及纵向撕裂六组,与关节镜检查结果相对照,计算MRI诊断盘状半月板各型撕裂的敏感性、特异性及阳性和阴性预测值。结果 MRI检查诊断盘状半月板撕裂的敏感性为98.55%,特异性为100%,阳性预测值为98.55%,阴性预测值为83.33%。其中诊断单纯水平撕裂、放射状撕裂、联合水平撕裂、复杂撕裂及纵向撕裂的敏感性分别为95.00%、83.34%、90.94%、84.61%、87.5%,特异性分别为81.48%、95.23%、95.23%、98.36%、100%。结论 MRI可较好的对膝关节盘状半月板撕裂进行诊断,为临床制定合理的治疗方案提供依据。Objective To explore the value of magnetic resonance imaging（MRI） in the diagnosis of tear of discoid meniscus. Methods MRI images and the clinical data of 74 patients were analyzed retrospectively, MRI signs of discoid meniscus were analyzed. Tears were classified into six groups： no tear, simple horizontal tear, radial tear, combined horizontal tear, complex tear and longitudinal tear. Sensitivity, specificity, positive and negative predictive values of MRI were calculated for each group separately. Results MRI was found to be 98.55% sensitive and 100% specific for determining the presence or absence of a tear with a positive predictive value of 98.55% and a negative predictive value of 83.33%. The sensitivities were 95.00% for simple horizontal, 83.34% for radial, 90.94% for combined horizontal, 84.61% for complex and 87.5% for longitudinal tears, whereas the specificities were 81.48% for simple horizontal, 95.23% for radial, 95.23% for combined horizontal, 98.36% for complex and 100% for longitudinal tears. Conclusion MRI is successful in determining the presence or absence of tears in discoid menisci, and it is of great he Ip for the appropriate therapy.

关 键 词：盘状半月板 磁共振成像 诊断 

分 类 号：R445.2[医药卫生—影像医学与核医学] R648[医药卫生—诊断学]