膝关节剥脱性骨软骨炎MRI分型  

MRI classication for osteochondritis dissecans of knee

作　　者：冯少仁 林云 胡金平 熊淑红 

机构地区：[1]新余市人民医院影像中心,江西新余338000 [2]新余市人民医院外科,江西新余338000

出　　处：《实用放射学杂志》2014年第9期1520-1523,共4页Journal of Practical Radiology

摘　　要：目的 探讨膝关节剥脱性骨软骨炎（OCD） MRI分型.方法 选取经关节镜证实的膝关节OCD 30例,对其MRI资料进行回顾性分析.结果 30例膝关节OCD关节镜证实稳定型19例、不稳定型11例.稳定型OCD T1 WI呈低信号,T2 WI或T2 WI/STIR骨片与母骨间为低信号或等信号.不稳定型OCD T1 WI与稳定型OCD表现相似;T2WI或T2 WI/STIR表现为骨片与母骨间有条状高信号或囊状高信号;有线状高信号通过软骨和软骨下骨;关节面局限性缺损达软骨下骨.结论 膝关节OCD根据T2 WI或T2 WI/STIR表现分为稳定型与不稳定型,其分型对临床治疗有重要指导意义.Objective To investigate the clinical utility of MRI for classification of knee osteochondritis dissecans （OCD）. Methods 30 cases with knee OCD confirmed by arthroscope were reviewed and their MRI findings were analyzed retrospectively. Results Of the 30 cases, 19 were stable OCD lesions while the others were unstable ones diagnosed via arthroscope. Both of the types of le- sions presented low signal findings on T1-weighted MR. There were thread high signal intensity or capsular high signal intensity presented on unstable OCD lesion of both bone plate and primitive bone; there was thread high signal intensity of cartilage and bone flap on T2-weighted or T2 WI/STIR MR while not high signal intensity of stable OCD lesion. The femoral condyle was the most commonly affected place in the knee. Conclusion OCD is classified into stable OCD lesion and unstable OCD lesion according to T2- weighted or T2 WI/STIR MR manifestation, which is of guiding significance for clinical therapy.

关 键 词：剥脱性骨软骨炎 磁共振成像 

分 类 号：R681.3[医药卫生—骨科学] R445.2[医药卫生—外科学]