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目的探讨非症状性与症状性老年外侧盘状半月板的磁共振成像(MRI)影像学形态及信号变化特征。方法收集该院收治的症状性老年外侧盘状半月板患者27例为实验组,非症状性患者27例为对照组。对所有患者的膝关节进行MRI检查,观察并比较两组外侧盘状半月板的游离缘高度(HF)、体部高度(HM)、关节囊缘高度(HP)、体部宽度(WB)等形态学指标以及冠状面和矢状面前交叉韧带(ACL)形态异常率和信号异常率。结果与对照组比较,实验组外侧盘状半月板HF较高,HM较低HP较低,WB较高,冠状面及矢状面ACL形态异常率及信号异常率较高(均P<0.05)。结论外侧盘状半月板的HF、HM、HP、WB等形态学指标以及ACL冠状面及矢状面的形态和信号异常可以作为临床评价老年外侧盘状半月板损伤与否的参考指标,对临床有指导意义。
Objective To investigate the magnetic resonance imaging (MRI) morphology and signal changes of asymptomatic and symptomatic senile lateral discoid meniscus. Methods Twenty-seven patients with symptomatic senile lateral discoid meniscus admitted to our hospital were selected as experimental group and 27 asymptomatic patients as control group. The knee joint of all the patients was examined by MRI and the free height (HF), body height (HM), height of joint capsule (HP) and width of body (WB) of the lateral discoid meniscus were observed and compared Morphological indicators and coronal and sagittal anterior cruciate ligament (ACL) morphology and abnormal rate of signal abnormalities. Results Compared with the control group, the discoid meniscus in the experimental group had higher HF, lower HM, lower HP, higher WB, and higher rates of abnormal morphology and signal abnormalities in the coronal and sagittal ACLs (all P <0.05) . Conclusion The morphology, signal abnormality of coronal and sagittal planes of HF, HM, HP and WB in the discoid meniscus can be used as a reference index for assessing the injury of the lateral discoid meniscus. Instructive.