• Wei Zhang, Cong-Feng Luo, Sven Putnis, Hui Sun, Zhi-Min Zeng, and Bing-Fang Zeng.
• Department of Orthopaedic Surgery, Shanghai Sixth People's Hospital, Shanghai JiaoTong University, 600 Yishan Road, Shanghai, 200233, China. zw_850228528@126.com
• Knee. 2012 Mar 1; 19 (2): 94-8.

AbstractThe posterolateral shearing tibial plateau fracture is uncommon in the literature, however with the increased usage of computer tomography (CT), the incidence of these fractures is no longer as low as previously thought. Few studies have concentrated on this fracture, least of all using a biomechanical model. The purpose of this study was to compare and analyse the biomechanical characteristics of four different types of internal fixation to stabilise the posterolateral shearing tibial plateau fracture. Forty synthetic tibiae (Synbone, right) simulated the posterolateral shearing fracture models and these were randomly assigned into four groups; Group A was fixed with two anterolateral lag screws, Group B with an anteromedial Limited Contact Dynamic Compression Plate (LC-DCP), Group C with a lateral locking plate, and Group D with a posterolateral buttress plate. Vertical displacement of the posterolateral fragment was measured using three different strengths of axial loading force, and finally loaded until fixation failure. It was concluded that the posterolateral buttress plate is biomechanically the strongest fixation method for the posterolateral shearing tibial plateau fracture.Copyright © 2011 Elsevier B.V. All rights reserved.

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