踝、距下关节外侧韧带断层与MRI图像的对照研究及临床意义

Comparative study between the sectional anatomy and MRI of the lateral ligaments of the ankle and subtalar joints

目的 :为临床MRI诊断踝、距下关节外侧韧带损伤提供断层解剖学依据。方法 :利用低温冰冻技术 ,当足呈自然放松位时 ,将踝、距下关节制成 3 .5mm厚的薄层断层标本 ,并与该区的磁共振图像相对照。结果 :距腓前韧带在轴位 ,跟腓韧带在冠状位和斜轴位 ,距腓后韧带在四个方位 ,颈韧带在冠状位和矢状位 ,距跟骨间韧带在冠状位、矢状位和斜轴位 ,伸肌下支持带浅束在冠状位和矢状位 ,中束和深束在冠状位 ,能清楚观察各韧带的形态和毗邻关系。结论 :在MRI上能清楚显示踝、距下关节外侧区的各条韧带。

Objective: To provide sectional anatomical basis for clinical MRI diagnosis of the lateral ligaments around the ankle and subtalar joints.Methods: A series of 3.5mm thick cryosections of 30 ankle and subtalar joints specimens were compared with the MR imagings on the coronal, sagittal, axial and oblique axial planes.Results: Anterior talofibular ligament on axial plane, calcaneo fibular ligament on coronal and oblique axial planes, posterior talofibular ligament on all of four planes, cervical ligament on coronal and sagittal planes, interosseous talocalcaneal ligament on coronal, sagittal and oblique axial planes, lateral bundle of inferior extensor retinaculum on coronal and sagittal planes, medial and intermediate bundle on coronal planes, can be most clearly observed.Conclusions: The lateral ligaments around ankle and subtalar joints can be displayed clearly on MRI.