低场强MRI在膝关节不常见损伤类型中的应用价值  

The Application of Low-field MRI for Less Common Types of Knee Injury

作　　者：张德洲[1] 罗飞[1] 李东明[1] 

机构地区：[1]四川省骨科医院放射科,成都610041

出　　处：《华西医学》2015年第1期49-52,共4页West China Medical Journal

基　　金：四川省2012年重点科技项目(2012SZZ018)~~

摘　　要：目的探讨低场强MRI对膝关节外伤后各类不常见损伤表现及其诊断价值。方法回顾分析经临床证实2010年1月-2012年12月385例膝关节外伤患者的MRI资料。将构成比≤5%的损伤归为不常见型损伤,统计各类不常见损伤的构成比并分析其MRI表现。结果 385例膝关节损伤患者发现半月板撕裂155例,十字韧带损伤117例,内侧副韧带损伤127例,骨挫伤84例,骨折44例,多种损伤可复合存在。同时发现半月板后根部损伤15例(4.0%);半月板关节囊分离3例(0.8%);后外侧复合体损伤17例(4.4%);Segond骨折6例(1.6%);板股韧带损伤1例(0.5%);髌骨内侧支持带损伤19例(4.9%);软骨骨折16例(4.2%),其中髌骨软骨骨折5例(1.3%),股骨内、外髁软骨骨折11例(2.9%)。结论低场强MRI对膝关节不常见损伤的诊断具有很高的准确性,是膝关节外伤后理想的一种非创伤性检查方法。Objective To evaluate the manifestations and diagnostic value of low-field MRI for all kinds of unusual knee injury after trauma. Methods We retrospectively analyzed the MRI data of 385 patients with knee joint injury in our hospital confirmed by arthroscopy and operation between January 2010 and December 2012. The injury with an incidence of equal to or lower than 5% was regarded as unusual injury in this study. Incidence rate of all kinds of unusual injury was counted and MRI imaging findings were analyzed. Results Among the 385 patients, meniscus injury was found in 155 patients, cruciate ligament injury in 117, medial collateral ligament injury in 127, bone contusion in 84, and fracture in 44. Multiple injuries also existed. At the same time, root injury of meniscus was found in 15 （4.0%） of the 385 cases; meniscocapsular separation in 3 cases （0.8%）; posterolateral complex injury in 17 cases （4.4%）; Segond fracture in 6 （1.6%） cases; femoral plate ligament injury in 1 （0.5%）case; medial patellar retinaculum injury in 19 （4.9%） cases; cartilage fractures in 16 cases （4.2%） in which patellar cartilage fractures occurred in 5 cases （1.3%）, femoral and lateral condyle cartilage fractures in 11 cases （2.9%）. Conclusion The low-field MRI has a high accuracy in the diagnosis of knee joint unusual injury, and is an ideal and noninvasive method for knee joint injuries.

关 键 词：膝损伤 膝关节 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R684[医药卫生—诊断学]