Role of Lateral Ankle Ligaments in Vertical Stability of the Fibula: A Cadaveric Model

Background: In unstable ankle fractures, the role of the deltoid and syndesmosis ligaments has been widely studied. However, it is uncertain what the importance of the lateral ankle ligament complex (LALC) is in the vertical stability of the fibula. Given its anatomical position, it should prevent t...

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Bibliographic Details
Published in:Foot & ankle international 2023-11, Vol.44 (11), p.1192-1198
Main Authors: Filippi, Jorge, Gutiérrez, Paulina, Quezada, José, Massri-Pugin, Jafet, Bastías, Gonzalo F., Melo, Rodrigo, Vidal, Catalina, Silvestre, Rony
Format: Article
Language:English
Subjects:
Ankle
Ankle Joint
Cadaver
Fibula
Humans
Joint Instability
Lateral Ligament, Ankle
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Summary:Background: In unstable ankle fractures, the role of the deltoid and syndesmosis ligaments has been widely studied. However, it is uncertain what the importance of the lateral ankle ligament complex (LALC) is in the vertical stability of the fibula. Given its anatomical position, it should prevent the proximal translation of the fibula. This study aims to evaluate the role of the LALC in stabilizing the fibula in the vertical plane. Methods: Eleven below-knee cadaveric specimens were used in this study. Proximal traction of the fibula was performed by applying 50 N in the intact state and after sequential transection of the syndesmotic ligaments, anterior talofibular ligament (ATFL), and the calcaneofibular ligament (CFL). At each stage, the proximal displacement of the fibula was measured. One-way repeated measures analysis of variance with post hoc Bonferroni correction was carried out to determine any significant differences between the groups. A P value 
ISSN:1071-1007
1944-7876
DOI:10.1177/10711007231192465