An Optimization Method for Implantation Parameters of Individualized TKA Tibial Prosthesis Based on Finite Element Analysis and Orthogonal Experimental Design

Overview

Journal BMC Musculoskelet Disord

Publisher Biomed Central

Specialties Orthopedics
Physiology

Date 2020 Mar 14

PMID 32164625

Citations 2

Authors

Yuefu Dong

Zhen Zhang

Wanpeng Dong

Guanghong Hu

Bing Wang

Zhifang Mou

Affiliations

Soon will be listed here.

Abstract

Background: Individualized and accurate implantation of a tibial prosthesis during total knee arthroplasty (TKA) can assist in uniformly distributing the load and reducing the polyethylene wear to obtain a long-term prosthetic survival rate, but individualized and accurate implantation of a tibial prosthesis during TKA remains challenging. The purpose of this study was to optimize and individualize the positioning parameters of a tibial prosthesis to improve its accurate implantation using a new method of finite element analysis in combination with orthogonal experimental design.

Methods: Ten finite element models of TKA knee joint were developed to optimize the implantation parameters (varus angle, posterior slope angle, and external rotation angle) of tibial prosthesis to reduce the peak value of the contact pressure on the polyethylene liner according to the method of finite element analysis in combination with orthogonal experimental design. The influence of implantation parameters on the peak value of the contact pressure on the polyethylene liner was evaluated based on a range analysis in orthogonal experimental design.

Results: The optimal implantation parameters for tibial prosthesis included 0° varus, 1° posterior slope, and 4° external rotation. Under these conditions, the peak value of the contact pressure on the polyethylene liner remained the smallest (16.37 MPa). Among the three parameters that affect the peak value of the contact pressure, the varus angle had the greatest effect (range = 6.70), followed by the posterior slope angle (range = 2.36), and the external rotation angle (range = 2.15).

Conclusions: The optimization method based on finite element analysis and orthogonal experimental design can guide the accurate implantation of the tibial prosthesis, reducing the peak value of the contact pressure on the polyethylene liner. This method provides new insights into the TKA preoperative plan and biomechanical decision-making for accurately implanting TKA prosthesis.

Citing Articles

Medial-lateral translational malalignment of the prosthesis on tibial stress distribution in total knee arthroplasty: A finite element analysis.

Zheng Z, Liu Y, Zhang A, Chen H, Wan Q, Zhong L Front Bioeng Biotechnol. 2023; 11:1119204.

PMID: 36937745 PMC: 10017773. DOI: 10.3389/fbioe.2023.1119204.

Finite element analysis of the tibial component alignment in a transverse plane in total knee arthroplasty.

Popescu R, Cristea S, Oleksik V, Pascu A, Haritinian E J Appl Biomed. 2021; 19(4):234-239.

PMID: 34907743 DOI: 10.32725/jab.2021.020.

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