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From controversy to contemporary: a narrative review of the anatomy and biomechanics of the posterolateral corner of the knee
Arthrosc Orthop Sports Med 2021;8:1-8
Published online May 1, 2021;  https://doi.org/10.14517/aosm20009
© 2021 Korean Arthroscopy Society and Korean Orthopedic Society for Sports Medicine.

Nishank Mehta, Tushar Nayak

Department of Orthopaedics, All India Institute of Medical Sciences, New Delhi, India
Correspondence to: Tushar Nayak, https://orcid.org/0000-0001-5822-6916
Department of Orthopaedics, All India Institute of Medical Sciences, Sri Aurobindo Marg, Ansari Nagar East, New Delhi, Delhi 110029, India. Tel: +91-11-2659-3341, E-mail: orthodrtushar@gmail.com
Received June 24, 2020; Revised October 7, 2020; Accepted February 8, 2021.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Injuries to the posterolateral corner (PLC) of the knee are more common than what was traditionally believed. Concomitant injuries of the PLC with cruciate ligaments are being increasingly recognized. Failure to address the PLC injury component may result in continuing knee instability and failure of cruciate ligament reconstruction. Moreover, the PLC anatomy remains much-discussed but still poorly understood with the difference in nomenclatures over the years and the discreetly reported anatomical variations being the major bone of contention. A detailed search of the literature reveals that a lot of confusion still exists regarding the nomenclature and precise anatomical details of most structures constituting the PLC. More knowledge has also been shed on the biomechanics of PLC in recent cadaveric studies. This article concludes that a lot of discrepancy in literature was noted regarding the PLC anatomy and a better understanding of the anatomy and biomechanics of the PLC would help in diagnosing and subsequently developing anatomically sound techniques of PLC reconstruction. This article reviews the anatomy and biomechanics of the structures constituting the PLC with a special focus on the different terminology for the same structures and the resultant lack of standardization of the PLC nomenclature.
Keywords : Anatomy; Anatomy of knee; Biomechanical phenomena
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