膝关节后外侧角慢性损伤的MRI研究  

Magnetic Resonance Imaging Study of Chronic Injury of the Posterolateral Corner of Knee Joint

作　　者：史东星 张卉 李艳若 郝龑 程留慧[1] SHI Dong-xing;ZHANG Hui;LI Yan-ruo;HAO Yan;CHENG Liu-hui(Department of Radiology,The First Affiliated Hospital of Henan University of Traditional Chinese Medicine,Zhengzhou 450000,Henan Province,China)

机构地区：[1]河南中医药大学第一附属医院放射科,河南郑州450000

出　　处：《中国CT和MRI杂志》2023年第4期165-167,共3页Chinese Journal of CT and MRI

基　　金：河南省中医药科学研究专项课题(2017ZY2056)。

摘　　要：目的 观察膝关节后外侧角(PLC)在慢性损伤及正常状态下的磁共振成像(MRI)表现。方法 2020年4月至2021年4月,选取本院膝关节PLC慢性损伤患者60例及同期招募的膝关节正常志愿者40例为研究对象,分别记作观察组与对照组。两组均予以膝关节PLC MRI扫描。分析比对两组组成膝关节PLC主要肌腱、韧带的MRI表现及其长度、宽度等信息。结果 对照组膝关节PLC呈现低信号强度的正常生理结构。观察组构成膝关节PLC的部分肌腱/韧带连续性中断,肌腱/韧带部分或完全肿胀,四围呈现不均一混杂信号,膝关节PLC慢性损伤呈不均一长T_(1)、T_(2)信号。观察组腘肌腱(PT)、腘腓韧带(PFL)、腓侧副韧带(LCL)的平均长、宽度均大于对照组(P<0.05)。结论 MRI技术可清晰显示膝关节PLC慢性损伤后的形态结构特征,其主要表现为PT、PFL、LCL等软组织结构的部分或完全肿胀/断裂、信号增强等。熟悉和掌握膝关节PLC慢性损伤及正常状态下的MRI表现,有助于放射科医师临床诊断能力的提升。Objective To observe the magnetic resonance imaging(MRI)manifestation of the posterolateral corner(PLC)of knee joint under chronic injury and normal condition.Methods From April 2020 to April 2021,60 patients with chronic injury of PLC of knee joint in our hospital and 40 normal volunteers of knee joint recruited during the same period were selected as the research subjects,which were recorded as the observation group and the control group,respectively.PLC MRI scan of knee joint was performed in both groups.The MRI manifestations of main tendons and ligaments that make up PLC of knee joint and their length and width in the two groups were analyzed and compared.Results PLC of knee joint in the control group showed normal physiological structure with low signal intensity.In the observation group,the continuity of part of the tendon/ligament constituting PLC of knee joint was interrupted,the tendon/ligament was partially or completely swollen,and there were heterogeneous mixed signals around,and the chronic injury of PLC of knee joint showed heterogeneous T_(1) and T_(2) signals.The average length and width of the popliteal tendon,poplitofibular ligament and lateral collateral ligament in the observation group were higher than those in the control group(P<0.05).Conclusion MRI technology can clearly show the morphological and structural characteristics of knee joint after PLC chronic injury,which mainly shows partial or complete swelling/fracture and signal enhancement of PT,PFL,LCL and other soft tissue structures.It is helpful for radiologists to improve their clinical diagnostic ability to be familiar with and master the MRI manifestation of PLC of knee joint under chronic injury and normal condition.

关 键 词：膝关节后外侧角 慢性损伤 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学]