Muhle C, Frank L R, Rand T, Ahn J M, Yeh L R, Trudell D, Haghighi P, Resnick D
Department of Radiology, Veterans Affairs Medical Center, San Diego, CA 92161, USA.
J Comput Assist Tomogr. 1998 Nov-Dec;22(6):938-44. doi: 10.1097/00004728-199811000-00019.
Our goal was to correlate high-resolution MR images of the tibiofibular syndesmosis with anatomic sections.
MRI was performed inside a local gradient coil on six cadaveric feet taped in 10-20 degrees dorsiflexion and 40-50 degrees plantar flexion by using axial and coronal T1-weighted SE sequences. After imaging, the specimens were frozen and sectioned into 3-mm-thick slices along the MR planes. Images were correlated with the anatomic sections.
MRI depicted the anatomy of the tibiofibular syndesmosis and surrounding structures. With the foot taped in dorsiflexion, axial imaging provided optimum views of the anterior, posterior, interosseous, and transverse tibiofibular ligaments. Coronal images allowed visualization of the entire course of the anterior, posterior, and transverse tibiofibular ligaments. The multifascicular appearance of the anterior tibiofibular ligament was best visualized in coronal sections. With the foot taped in dorsiflexion or in plantar flexion, it was possible to distinguish the posterior tibiofibular ligament and transverse tibiofibular ligament from the posterior talofibular ligament in all specimens.
High-resolution MRI using a local gradient coil provides excellent delineation of the ligaments of the distal tibiofibular syndesmosis.
我们的目标是将胫腓联合的高分辨率磁共振图像与解剖切片进行对比。
在局部梯度线圈内，对六具尸体足部进行磁共振成像，足部用胶带固定于背屈10 - 20度和跖屈40 - 50度，采用轴位和冠状位T1加权自旋回波序列。成像后，将标本冷冻，并沿磁共振成像平面切成3毫米厚的切片。将图像与解剖切片进行对比。
磁共振成像显示了胫腓联合及周围结构的解剖情况。足部固定于背屈位时，轴位成像能提供胫腓前、后、骨间和横向韧带的最佳视野。冠状位图像可显示胫腓前、后和横向韧带的全程。胫腓前韧带的多束状外观在冠状切片中显示最佳。足部固定于背屈位或跖屈位时，在所有标本中均可将胫腓后韧带和胫腓横向韧带与距腓后韧带区分开来。
使用局部梯度线圈的高分辨率磁共振成像能很好地显示胫腓远侧联合韧带。
