Evaluation of the mechanical properties of posterolateral structures and supporting posterolateral instability of the knee

Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
Yong-Min ChunHyoung-Sik Kim

Abstract

The objectives of this study are to evaluate the contributions of the popliteofibular ligament (PFL), the popliteus tendon (PT), and the lateral (fibular) collateral ligament (LCL) to the posterolateral stability of the knee by changing the sequence of selective transection. Twelve fresh-frozen cadaveric knees were divided into two groups. Group 1 has a cutting sequence as follows: PFL, PT, LCL. Group 2 has a cutting sequence as follows: PT, PFL, LCL. Each specimen was mounted on the apparatuses using the Ilizarov external fixator for measuring external rotatory and varus laxities at every 30 degrees from 0 degrees to 90 degrees of knee flexion. In both groups, there was no significant difference between the PFL and PT in the increment of respective external rotatory laxity after transection at each knee flexion angle, except 0 degrees in group 2. The transection of the LCL significantly increased the external rotation laxity at 0 degrees and 30 degrees . Varus instability was increased significantly only after cutting the LCL at every knee flexion angle. In conclusion, both the PFL and PT equally contribute to the external rotatory stability. The LCL also contributes to the external rotatory stability at early range of knee fl...Continue Reading

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Citations

Sep 14, 2011·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Mak-Ham LamKai-Ming Chan
Nov 20, 2013·Sports Biomechanics·Robert N Marshall, Peter J McNair
Jan 1, 2011·Sports Health·Bryan August WarmeAnnunziato Amendola
Mar 9, 2010·Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association·Sung-Jae KimYong-Min Chun
Jun 6, 2013·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Yoon Hyuk KimKwang-Jun Oh
Feb 14, 2018·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Kyoung-Tak KangSung-Hwan Kim
Sep 3, 2010·Clinical Orthopaedics and Related Research·Thomas J KesmanRobert T Trousdale
Aug 30, 2011·Clinical Orthopaedics and Related Research·Frank A PetriglianoAndrew D Pearle

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