距跟骨间韧带断层解剖及磁共振成像的对照研究及临床意义

Comparative study between the sectional anatomy and MRI of the interosseous talocalcaneal ligament and its clinic significance

目的为临床MRI诊断距跟骨间韧带的损伤提供断层解剖学依据。方法选取12例成年男尸右足踝标本,于自然松弛位(即跖曲20°)经低温冷冻后制成断层标本,其中冠状位4例、矢状位4例、横断位4例,并与该区的MRI图像对比。结果在矢状面过距骨颈外侧缘内侧(19.2±2.8)mm范围,在冠状面过距骨体中部(17.9±5.2)mm范围内可见距跟骨间韧带。在过距骨体中部的矢状位断面距跟骨间韧带显示最清晰,平均长17.2mm,矢状径平均宽11.9mm。过距骨体中部的冠状位断面距跟骨间韧带显示最清晰,平均长13.1mm,横径平均宽14.1mm。水平面对于显示距跟骨间韧带效果不佳。结论在MRI上能清楚显示距跟骨间韧带,为诊断距跟骨间韧带损伤提供了依据。

Objective To provide sectional anatomical basis for clinical magnetic resonance imaging （MRI） diagnosis of the interosseous talocalcaneal ligament. Methods Respectively, twelve cadaveric right feet taped in 20°plantarflexion position were frozen and cut into 3-mm-thiek slices in coronal（ n = 4）, sagittal（ n = 4） and transverse（ n = 4） planes. Then we compared the slices with the MR images. Results In sagittal section through lateral border of collum tall, interosseous talocalcaneal ligament is within （19.2±2.8）mm. In coronal section through medial part of corpus tali, interosseous talocaleaneal ligament is within （17.9±5.2）mm. In the sagittal section through medial part of corpus tail, interosseous talocaleaneal ligament can be displayed most distinctly and it is 17.2mm long, 11.9mm wide in sagittal diameter. In coronal section through medial part of corpus tall, interosseous talocalcaneal ligament can be displayed most distinctly and it is 13.1mm long, 14.1mm wide in transverse diameter. In transverse section, the interosseous talocalcaneal ligament can not be displayed clearly. Conclusion MRI provides excellent delineation of the interosseous talocalcaneal ligament and evidence for the diagnosis of the interosseous talocalcaneal ligament injury.