1 Department of Radiology, College of Medicine, Inje University Busan Paik Hospital, Gaegeum-dong Jin-gu, Busan 614-735, Republic of Korea.
AJR Am J Roentgenol. 2014 Jan;202(1):W87-94. doi: 10.2214/AJR.13.10727.
The purpose of this study is to evaluate the frequency and MRI characteristics of multibanded anterior talofibular ligaments in normal ankles and to characterize the tear types of multibanded anterior talofibular ligaments in sprained ankles using a 3D isotropic proton density (PD)-weighted fast spin-echo (FSE) MRI sequence.
In the first session, 3D PD-weighted FSE MRI of 33 ankles was obtained from 20 asymptomatic volunteers. The number of bands in the anterior talofibular ligaments, the locations of the anterior talofibular ligaments on orthogonal planes of the 3D PD-weighted FSE images, and the signal intensity, depth, and width of each band on their multiplanar reformatted images parallel to the orientation of each band of the anterior talofibular ligament were evaluated by two readers. In the second session, 3D PD-weighted FSE MRI of 51 sprained ankles was evaluated by two readers for determining the number of bands in the anterior talofibular ligaments and the presence of tears in each band.
In the first session, three anterior talofibular ligaments were single banded, 27 were double banded, and three were triple banded. In double-banded anterior talofibular ligaments, the superior band was about two times wider and thicker than the inferior band. The depth, width, and location of single-banded anterior talofibular ligaments and the superior band of double-banded anterior talofibular ligaments were not statistically significantly different. In the second session, the most common type of injury in double-banded anterior talofibular ligaments was a two-band tear.
In an evaluation using the 3D PD-weighted FSE sequence, most anterior talofibular ligaments consisted of two bands, and tears in both bands were the most common type of injury in double-banded anterior talofibular ligaments.
本研究旨在评估正常踝关节中多束状前距腓韧带的出现频率和 MRI 特征，并使用 3D 各向同性质子密度（PD）加权快速自旋回波（FSE）序列来描述扭伤踝关节中多束状前距腓韧带的撕裂类型。
在第一部分，对 20 名无症状志愿者的 33 个踝关节进行了 3D PD 加权 FSE MRI 检查。两位读者评估了前距腓韧带的带数、3D PD 加权 FSE 图像正交平面上的前距腓韧带位置，以及多平面重建图像上每个带的信号强度、深度和宽度，这些图像与前距腓韧带的每个带的方向平行。在第二部分，两位读者评估了 51 个扭伤踝关节的 3D PD 加权 FSE MRI，以确定前距腓韧带的带数和每个带的撕裂情况。
在第一部分中，3 个前距腓韧带为单束状，27 个为双束状，3 个为三束状。在双束状前距腓韧带中，上束比下束大约宽两倍，厚两倍。单束状前距腓韧带和双束状前距腓韧带的上束的深度、宽度和位置没有统计学差异。在第二部分中，双束状前距腓韧带最常见的损伤类型是双带撕裂。
在使用 3D PD 加权 FSE 序列进行评估时，大多数前距腓韧带由两个束组成，双束状前距腓韧带的撕裂是最常见的损伤类型。
