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Ankle Joint

Ankle Joint

The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...

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Anterolateral ligament anatomy: a comparative anatomical study.

Sheila Jean McNeill Ingham^1,2, Rogerio Teixeira de Carvalho², Cesar A Q Martins¹

¹Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 3471 Fifth Avenue, suite #1011, Pittsburgh, PA, 15213-3221, USA.

Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA

|December 30, 2015

Summary

Anatomical studies suggest the anterolateral ligament (ALL) is unique to humans. This study found no ALL in 58 dissected animal knees, questioning its presence in other species and surgical reconstruction necessity.

Keywords:

Anatomical study Anterolateral ligament Comparative anatomy Knee

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Area of Science:

Comparative anatomy
Orthopedic research

Background:

The anterolateral ligament (ALL) is increasingly recognized as a distinct structure in human knee anatomy.
Understanding its presence across species is crucial for comparative anatomical and evolutionary studies.

Purpose of the Study:

To investigate the anatomical presence of the anterolateral ligament (ALL) in various animal species.
To compare the lateral knee anatomy between humans and a diverse range of animal specimens.

Main Methods:

Dissection of 58 fresh-frozen knee specimens from 24 different animal species.
Standardized dissection procedures performed by the same researchers to ensure consistency.

Main Results:

The anterolateral ligament (ALL) was not identified in any of the dissected animal knees.
A novel finding revealed that certain primate species possess two lateral collateral ligaments (LCLs).

Conclusions:

The absence of a distinct ALL in the studied animal species challenges its universal presence in mammals.
Clinical implications suggest caution when considering surgical reconstruction of the ALL as a singular entity, particularly when extrapolating from animal models.