Edama Mutsuaki, Kageyama Ikuo, Kikumoto Takanori, Nakamura Masatoshi, Ito Wataru, Nakamura Emi, Hirabayashi Ryo, Takabayashi Tomoya, Inai Takuma, Onishi Hideaki
Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Shimami-cho 1398, Kita-ku, Niigata City, Niigata 950-3198, Japan; Department of Anatomy, School of Life Dentistry at Niigata, Nippon Dental University, Niigata 951-8580, Japan.
Department of Anatomy, School of Life Dentistry at Niigata, Nippon Dental University, Niigata 951-8580, Japan.
Ann Anat. 2018 Mar;216:69-74. doi: 10.1016/j.aanat.2017.11.001. Epub 2017 Nov 28.
The aims of this study have been to clarify differences in morphological features based on the number of fiber bundles in the anterior talofibular ligament (ATFL), and to investigate the relationship between the ATFL and the calcaneofibular ligament (CFL). This study used 81 legs from 43 cadavers. The ATFL was classified according to differences in the number of fiber bundles as: Type I, with one fiber bundle; Type II-a, with two fiber bundles that were incompletely separated; Type II-b, with two fiber bundles that were completely separated; and Type III, with three fiber bundles. The morphological features measured were fiber bundle length, fiber bundle width, and fiber bundle angle. For the relationship between the ATFL and CFL, the positional relationship and attachment sites of the two ligaments were examined. Type I was present in 33%, Type II-a in 17%, Type II-b in 40%, and Type III in 10%. The morphological features of superior fiber bundles and inferior fiber bundles were significantly different within each type. Among types, there were significant differences in the morphological features of Type II-a and Type III inferior fiber bundles. In the relationship between the ATFL and CFL, there was a connection between the ATFL and CFL in all specimens. Various types were present in the positional relationship and attachment sites of the two ligaments. The results of this study suggest that, among different ligament types with two or three fiber bundles, the control function of the ankle may differ within each type and among types.
本研究的目的是基于距腓前韧带（ATFL）中纤维束的数量阐明形态学特征的差异，并研究ATFL与跟腓韧带（CFL）之间的关系。本研究使用了来自43具尸体的81条腿。ATFL根据纤维束数量的差异分为：I型，有一束纤维；II-a型，有两束未完全分开的纤维；II-b型，有两束完全分开的纤维；III型，有三束纤维。测量的形态学特征为纤维束长度、纤维束宽度和纤维束角度。对于ATFL与CFL之间的关系，检查了两条韧带的位置关系和附着部位。I型占33%，II-a型占17%，II-b型占40%，III型占10%。各类型内上纤维束和下纤维束的形态学特征有显著差异。在各类型之间，II-a型和III型下纤维束的形态学特征有显著差异。在ATFL与CFL的关系中，所有标本中ATFL与CFL之间均有连接。两条韧带的位置关系和附着部位存在多种类型。本研究结果表明，在具有两束或三束纤维的不同韧带类型中，踝关节的控制功能在各类型内和各类型之间可能有所不同。
