Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata, Japan.
Department of Anatomy, School of Life Dentistry at Niigata, Nippon Dental University, Niigata, Japan.
Clin Anat. 2021 Oct;34(7):1002-1008. doi: 10.1002/ca.23687. Epub 2020 Oct 9.
The aim of this study was to elucidate the morphological characteristics of the lateral Lisfranc ligament in a large sample. This investigation examined 100 legs from 50 cadavers. Each of the lower limbs was dissected to identify the plantar aspect of the transverse metatarsal arch, and morphological characteristics of the lateral plantar ligament were assessed, including the length, width, and thickness of the fiber bundles. The majority of plantar ligaments originated from the base of M5 and the plantar aspect of the lateral cuneiform (LC). The lateral plantar ligament could be classified into three types: Type I, a band-like fiber bundle originating from the base of M5 to the LC (41%); Type II, originating from the base of M5 and the plantar aspect of LC and mostly connected the blending the fiber bundles of the tibialis posterior (TP) and long plantar ligament (LPL) (21%); and Type III, with no ligaments originating from the base of M5 and plantar aspect of the LC (38%). The morphological characteristics of Type I lateral plantar ligament were as follows: length, 31.8 ± 3.7 mm; width, 2.3 ± 1.0 mm; and thickness, 0.2 ± 0.3 mm. The morphology of the lateral plantar ligament showed variation, originating from the base of M5 and the plantar aspect of LC most commonly, but this was not the case in 38% of limbs. The findings suggest that the lateral plantar ligament might play a role in the transverse tarsal arch, indicating a cooperative mechanism with the TP and LPL.
本研究旨在阐明外侧 Lisfranc 韧带在大样本中的形态特征。该研究检查了 50 具尸体的 100 条腿。每条下肢均进行解剖以确定横跖骨弓的足底侧，并评估外侧足底韧带的形态特征，包括纤维束的长度、宽度和厚度。大多数足底韧带起源于 M5 的基部和外侧楔骨（LC）的足底侧。外侧足底韧带可分为三型：I 型，起源于 M5 的基部至 LC 的带状纤维束（41%）；II 型，起源于 M5 的基部和 LC 的足底侧，主要连接后胫（TP）和长足底韧带（LPL）的纤维束（21%）；III 型，无韧带起源于 M5 的基部和 LC 的足底侧（38%）。I 型外侧足底韧带的形态特征为：长度 31.8 ± 3.7mm；宽度 2.3 ± 1.0mm；厚度 0.2 ± 0.3mm。外侧足底韧带的形态存在变异，最常见的起源于 M5 的基部和 LC 的足底侧，但在 38%的肢体中并非如此。研究结果表明，外侧足底韧带可能在横跗骨弓中发挥作用，表明与 TP 和 LPL 存在协同机制。
