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Knee Surg Sports Traumatol Arthrosc. 2017 Apr;25(4):1048-1054. doi: 10.1007/s00167-015-3956-2. Epub 2015 Dec 28.

Anterolateral ligament anatomy: a comparative anatomical study.

Author information

1
Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 3471 Fifth Avenue, suite #1011, Pittsburgh, PA, 15213-3221, USA.
2
Department of Orthopaedic Surgery, Federal University of São Paulo, São Paulo, SP, Brazil.
3
Department of Orthopaedic Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
4
Department of Mechanical Engineering and Material Science, University of Pittsburgh, Pittsburgh, PA, USA.
5
Department of Anthropology, School of Biomedical Sciences, Kent State University, Kent, OH, USA.
6
Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 3471 Fifth Avenue, suite #1011, Pittsburgh, PA, 15213-3221, USA. ffu@upmc.edu.
7
Department of Mechanical Engineering and Material Science, University of Pittsburgh, Pittsburgh, PA, USA. ffu@upmc.edu.

Abstract

PURPOSE:

Some anatomical studies have indicated that the anterolateral ligament (ALL) of the knee is distinct ligamentous structure in humans. The purpose of this study is to compare the lateral anatomy of the knee among human and various animal specimens.

METHODS:

Fifty-eight fresh-frozen knee specimens, from 24 different animal species, were used for this anatomical study. The same researchers dissected all the specimens in this study, and dissections were performed in a careful and standardized manner.

RESULTS:

An ALL was not found in any of the 58 knees dissected. Another interesting finding in this study is that some primate species (the prosimians: the red and black and white lemurs) have two LCLs.

CONCLUSION:

The clinical relevance of this study is the lack of isolation of the ALL as a unique structure in animal species. Therefore, precaution is recommended before assessing the need for surgery to reconstruct the ALL as a singular ligament.

KEYWORDS:

Anatomical study; Anterolateral ligament; Comparative anatomy; Knee

PMID:
26713325
DOI:
10.1007/s00167-015-3956-2
[Indexed for MEDLINE]

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