Placement-induced effects on high tibial osteotomized construct - biomechanical tests and finite-element analyses

BMC Musculoskeletal Disorders
Chu-An LuoChing-Shiow Tseng

Abstract

High tibial osteotomy (HTO) with a medially opening wedge has been used to treat osteoarthritic knees. However, the osteotomized tibia becomes a highly unstable structure and necessitates the use of plate and screws to stabilize the medial opening and enhance bone healing. A T-shaped plate (e.g. TomoFix) with locking screws has been extensively used as a stabilizer of the HTO wedge. From the biomechanical viewpoint, however, the different plate sites and support bases of the HTO plate should affect the load-transferring path and wedge-stabilizing ability of the HTO construct. This study uses biomechanical tests and finite-element analyses to evaluate the placement- and base-induced effects of the HTO plates on construct performance. Test-grade synthetic tibiae are chosen as the standard specimens of the static tests. A medial wedge is created for each specimen and stabilized by three plate variations: hybrid use of T- and I-shaped plates (TIP), anteriorly placed TomoFix (APT), and medially placed TomoFix (MPT). There are five tests for each variation. The failure loads of the three constructs are measured and used as the load references of the fatigue finite-element analysis. The residual life after two hundred thousand cycles ...Continue Reading

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Citations

Aug 24, 2017·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Hiroshi NakayamaMasaru Higa
Aug 15, 2018·Journal of Orthopaedic Surgery·Toshiaki TakahashiHiromasa Miura
Jun 2, 2020·Computer Methods in Biomechanics and Biomedical Engineering·Chih-Ting ChengYi-Chih Chen
Jun 14, 2019·Journal of Healthcare Engineering·Xiaoyu LiuZhongmin Jin
Jul 18, 2019·Journal of Orthopaedic Surgery and Research·Yong-Gon KohKyoung-Tak Kang
Nov 13, 2020·European Journal of Trauma and Emergency Surgery : Official Publication of the European Trauma Society·J DehoustK-H Frosch
Mar 13, 2021·Orthopaedics & Traumatology, Surgery & Research : OTSR·Kyoung-Tak KangSae Kwang Kwon
Sep 27, 2020·Medical Engineering & Physics·Shabnam SamsamiPeter Augat

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Software Mentioned

Simulation Ed
Excel
SolidWorks Ed
TomoFix
PhysiGuide
SolidWorks

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