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Surgical and Radiologic Anatomy

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05.11.2021 | Original Article

Relationship between inferior fascicle of anterior talofibular ligament and articular capsule in lateral ankle ligament complex

verfasst von: Akira Kakegawa, Nanae Fukushima, Norimi Sumitomo, Ayata Nagira, Yuko Ichinose, Tetsuji Moriizumi

Erschienen in: Surgical and Radiologic Anatomy | Ausgabe 2/2022

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Abstract

Purpose

The lateral ankle ligament complex (LALC) is composed of anterior talofibular (ATFL), calcaneofibular (CFL), and posterior talofibular (PTFL) ligaments, all of which have a connection/continuous fiber. However, the structural link between the LALC and the articular capsule remains unknown. The goal of our study was to determine the connection between ATFL’s inferior fascicle and the articular capsule.

Methods

In this study, we utilized 84 formalin-fixed ankles to elucidate the structure of LALC. Between ATFL and CFL, the bundle number of ATFL and arciform fiber was investigated. The specimens were decalcified and sectioned coronally using a freezing microtome, in the case of double bundles of ATFL, to study the connection between the inferior fascicle of ATFL and the articular capsule.

Results

ATFL had a single (25%), double (74%), and triple (1%) bundle number, respectively. The arciform fiber connecting the ATFL and the CFL was found in the superficial layer of all ankles (100%). There were two types of relationships between the inferior fascicle of ATFL and the articular capsule: 36 ankles (58%) were extracapsular, and 26 of 62 ankles (42%) were integrated with the inferior-lateral articular capsule. There are two kinds of relationships between the inferior fascicle of the ATFL and the articular capsule: extracapsular and integrated-capsular.

Conclusions

The inferior fascicle of ATFL has a variant and integrated-capsular type is reinforced inferior-lateral articular capsule and enters the joint to form continuous fibers with PTFL, making LALC. These anatomical findings are helpful in ultrasonography diagnosis and arthroscopic ankle surgery.

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Titel: Relationship between inferior fascicle of anterior talofibular ligament and articular capsule in lateral ankle ligament complex
verfasst von: Akira Kakegawa
Nanae Fukushima
Norimi Sumitomo
Ayata Nagira
Yuko Ichinose
Tetsuji Moriizumi
Publikationsdatum: 05.11.2021
Verlag: Springer Paris
Erschienen in: Surgical and Radiologic Anatomy / Ausgabe 2/2022
Print ISSN: 0930-1038
Elektronische ISSN: 1279-8517
DOI: https://doi.org/10.1007/s00276-021-02851-1

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Relationship between inferior fascicle of anterior talofibular ligament and articular capsule in lateral ankle ligament complex

Abstract

Purpose

Methods

Results

Conclusions

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Springer Medizin

Abstract

Purpose

Methods

Results

Conclusions

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