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Title: Comparison of two surgical techniques for reconstructing posterolateral corner of the knee: a cadaveric study evaluated by navigation system
Authors: Ho, Eric P.-Y.
Lam, Mak-Ham
Chung, Mandy Man-Ling
Fong, Daniel Tik-Pui
Law, Billy Kan-Yip
Yung, Patrick Shu-Hang
Chan, Wood-Yee
Chan, Kai-Ming
Keywords: Arthroscopy
Knee joint
Issue Date: 2011
Publisher: Elsevier (© Arthroscopy Association of North America)
Citation: HO, E. ... et al., 2011. Comparison of two surgical techniques for reconstructing posterolateral corner of the knee: a cadaveric study evaluated by navigation system. Arthroscopy, 27 (1), pp.89-96.
Abstract: Purpose: This study aimed to evaluate the immediate effect on knee kinematics by 2 different techniques of posterolateral corner (PLC) reconstruction. Methods: Five intact formalin-preserved cadaveric knees were used in this study. A navigation system was used to measure knee kinematics (posterior translation, varus angulation, and external rotation) after application of a constant force and torque to the tibia. Four different conditions of the knee were evaluated during the biomechanical test: intact knee and PLC-sectioned knee and PLC-reconstructed knee by the doublefemoral tunnel technique and singlefemoral tunnel technique. Results: Sectioning of the PLC structures resulted in significant increases in external rotation at 30° of flexion from 11.2° (SD, 2.6) to 24.6° (SD, 6.2), posterior translation at 30° of flexion from 3.4 mm (SD, 1.5) to 7.4 mm (SD, 3.8), and varus angulation at 0° of flexion from 2.3° (SD, 2.1) to 7.9° (SD, 5.1). Both reconstruction techniques significantly restored the varus stability. The external rotation and posterior translation at 30° of flexion after reconstruction with the doublefemoral tunnel technique were 10.2° (SD, 1.3) and 3.4° (SD, 2.7), respectively, which were significantly better than those of the singlefemoral tunnel technique. Conclusions: Both techniques of reconstruction showed improved stability compared with PLC-sectioned knees. The doublefemoral tunnel technique in PLC reconstruction showed better rotational stability and resistance to posterior translation than the singlefemoral tunnel technique without compromising varus stability. Clinical Relevance: PLC reconstruction by a doublefemoral tunnel technique achieves better rotational control and resistance to posterior translation.
Sponsor: This research project was made possible by equipment/resources donated by The Hong Kong Jockey Club Charities Trust.
Version: Accepted for publication
DOI: 10.1016/j.arthro.2010.06.006
URI: https://dspace.lboro.ac.uk/2134/21279
Publisher Link: http://dx.doi.org/10.1016/j.arthro.2010.06.006
ISSN: 0749-8063
Appears in Collections:Published Articles (Sport, Exercise and Health Sciences)

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