29, avenue du Maréchal de Lattre de Tassigny, 54035, Nancy cedex. Hôpital Central, Service d'Imagerie Guilloz, CHU-Nancy, France.
29, avenue du Maréchal de Lattre de Tassigny, 54035, Nancy cedex. Hôpital Central, Service d'Imagerie Guilloz, CHU-Nancy, France.
Eur J Radiol. 2019 Oct;119:108645. doi: 10.1016/j.ejrad.2019.108645. Epub 2019 Sep 7.
To describe the aspect of the anteromedial meniscofemoral ligament on MRI and to assess its prevalence.
One thousand five hundred sixty knee MRI studies were retrospectively evaluated for the presence of an anteromedial meniscofemoral ligament. In addition to these studies, nine full MRI studies from our department's image archive were also analysed. The anteromedial meniscofemoral ligament length, thickness, and angle with respect to the tibial plateau were evaluated independently by two radiologists. For comparison purposes, the anterior cruciate ligament was assessed in the same manner.
There was a 0.77% prevalence of the anteromedial meniscofemoral ligament in the study population. Compared to the anterior cruciate ligament, the anteromedial meniscofemoral ligament was 80.6%-83.8% thinner according to both observers (P = 0.0002), with a mean thickness of 1.53 ± 0.47 mm and 1.80 ± 0.66 mm determined by observers 1 and 2, respectively. The anteromedial meniscofemoral ligament angles were 15%-17.7% lower than the anterior cruciate ligament angles (P < 0.003). Interobserver reproducibility was considered excellent for the length and angle measurements (ICCs varying from 0.85-0.97) and good for the thickness measurements (ICCs 0.66-0.77).
The anteromedial meniscofemoral ligament is a rare structure that can be differentiated from the anterior cruciate ligament based on morphologic criteria.
描述内侧半月板前中韧带（anterior meniscofemoral ligament，AMFL）在 MRI 中的表现，并评估其发生率。
回顾性分析了 1560 例膝关节 MRI 检查，以评估 AMFL 的存在。此外，还对我们部门图像档案中的 9 例完整 MRI 研究进行了分析。两名放射科医生分别独立评估 AMFL 的长度、厚度和与胫骨平台的夹角。为了比较目的，以同样的方式评估了前交叉韧带（anterior cruciate ligament，ACL）。
在研究人群中，AMFL 的发生率为 0.77%。与 ACL 相比，根据两位观察者的评估，AMFL 分别薄 80.6%-83.8%（P = 0.0002），平均厚度为 1.53 ± 0.47 mm 和 1.80 ± 0.66 mm，由观察者 1 和 2 分别确定。AMFL 角度比 ACL 角度低 15%-17.7%（P < 0.003）。长度和角度测量的观察者间可重复性被认为是极好的（ICC 从 0.85 到 0.97），厚度测量的观察者间可重复性是好的（ICC 为 0.66-0.77）。
AMFL 是一种罕见的结构，可以根据形态学标准与 ACL 区分开来。
