Developing a Finite Element Model for Evaluating the Posterior Tibial Slope in a Medial Opening Wedge High Tibial Osteotomy

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PROQUEST: 2812064544

Abstract and keywords

This thesis aimed to develop and validate a computation finite element (FE) model to investigate the effect of hinge axis orientation on the posterior tibial slope (PTS) and mechanical medial proximal tibial angle (mMPTA) while analyzing the mechanical response around the hinge in a medial opening wedge high tibial osteotomy (MOWHTO). Chapter 2 highlights the importance of selecting an appropriate modeling method that best represents the clinical scenario. Chapter 3 validated a FE model using the Bland-Altman agreement analysis which yielded 95% limits of agreement of −0.9° to 1.2° for PTS and −1.4° to 1.9° for mMPTA. A parametric study was presented in Chapter 4 to investigate the effect of a 15° internal and external hinge axis rotation (with respect to a neutral hinge axis orientation) on the PTS and quantified the stresses and strains between each hinge axis orientation through the anterior and posterior region of the hinge.

Keywords: High Tibial Osteotomy; MOWHTO; Finite Element Modeling; FEM; Tibial Slope; Stress Analysis; Osteotomy; Knee Osteoarthritis; Hinge Axis Orientation

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