Edama Mutsuaki, Takabayashi T, Inai T, Hirabayashi R, Ikezu M, Kaneko F, Kanta M, Kageyama I
Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Shimami-cho 1398, Kita-ku, Niigata, 950-3198, Japan.
Department of Anatomy, School of Life Dentistry at Niigata, Nippon Dental University, Niigata, Japan.
Surg Radiol Anat. 2019 Dec;41(12):1441-1443. doi: 10.1007/s00276-019-02295-8. Epub 2019 Jul 23.
In the present study, the posterior intermalleolar ligament (PIML) was classified by type using large-scale cadavers to provide basic information to help elucidate the mechanism of ankle joint posterior impingement syndrome.
This investigation examined 100 legs from 49 Japanese cadavers (mean age at death, 79 ± 11 years; 58 sides from men, 42 from women). In the classification method, an absent PIML was classified as Type I, a PIML with one fiber bundle (attachment to one place) was Type II, a PIML with two fiber bundles (attachment to two places) was Type III, and a PIML with three fiber bundles (attachment to three or more places) was Type IV. Furthermore, according to other adhering tissues, they were further subdivided and classified by type.
There were various types of PIML: 19 (19%) Type I; 24 (24%) Type II; 23 (23%) Type III; and 34 (34%) Type IV. A PIML was present in 81 legs (81%). There were no significant differences between men and women and between left and right sides.
The complex relationships of the PIML with the surrounding ligaments and tissues are considered to be among the factors that make interpretation of imaging findings difficult.
在本研究中，通过对大量尸体进行研究，对踝后肌间韧带（PIML）进行分型，以提供基础信息，帮助阐明踝关节后撞击综合征的发病机制。
本研究检查了49具日本尸体的100条下肢（平均死亡年龄79±11岁；男性58侧，女性42侧）。在分型方法中，无PIML的情况被分类为I型，有一束纤维（附着于一处）的PIML为II型，有两束纤维（附着于两处）的PIML为III型，有三束纤维（附着于三处或更多处）的PIML为IV型。此外，根据其他附着组织，对其进一步细分并进行分型。
PIML存在多种类型：I型19例（19%）；II型24例（24%）；III型23例（23%）；IV型34例（34%）。81条下肢（81%）存在PIML。男女之间以及左右侧之间均无显著差异。
PIML与周围韧带和组织的复杂关系被认为是导致影像学表现难以解读的因素之一。
