Optimal Conformity Design of Tibial Insert Component Based on ISO Standard Wear Test Using Finite Element Analysis and Surrogate Model

Wisanupong Takian,Sedthawatt Sucharitpwatskul,Atthaphon Ariyarit,Supakit Rooppakhun

doi:10.3390/sym13122377

Wisanupong Takian, Sedthawatt Sucharitpwatskul + Show 2 more

Open Access

https://doi.org/10.3390/sym13122377

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Abstract

Total knee replacement is a standard surgical treatment used to treat osteoarthritis in the knee. The implant is complicated, requiring expensive designs and testing as well as a surgical intervention. This research proposes a technique concerning the optimal conformity design of the symmetric polyethylene tibial insert component for fixed-bearing total knee arthroplasty. The Latin Hypercube Sampling (LHS) design of the experiment was used to create 30 cases of the varied tibial insert conformity that influenced the total knee replacement wear volume. The combination of finite element analysis and a surrogate model was performed to predict wear volume according to the standard of ISO-14243:2014 wear test and to determine the optimal conformity. In the first step, the results could predict wear volume between 5.50 to 72.92 mm3/106 cycle. The Kriging method of a surrogate model has then created the increased design based on the efficient global optimization (EGO) method with improving data 10 design points. The result revealed that the optimum design of tibial insert conformity in a coronal and sagittal plane was 0.70 and 0.59, respectively, with a minimizing wear volume of 3.07 mm3/106 cycle. The verification results revealed that the area surface scrape and wear volume are similar to those predicted by the experiment. The wear behavior on the tibial insert surface was asymmetry of both sides. From this study it can be concluded that the optimal conformity design of the tibial insert component can be by using a finite element and surrogate model combined with the design of conformity to the minimized wear volume.

Highlights

Knee osteoarthritis is a condition that occurs due to arthritis surface or degenerative joint disease resulting in loss of function and pain in the knee, which often occurs in the elderly
It can be noticed that the wear scar is observed with an oval-shape that occurred on the region of both sides of the posterior surface on the tibial insert component
Many factors affect the wear of the tibial insert, such as material, sliding distance, load, shape design, etc. [9,12] Some research studied wear in the tibial insert, which was made from different materials such as UHMWPE GUR 1020 and 1050, PEEK, and CFR-PEEK [13,19,22,29,30]

Summary

Introduction

Knee osteoarthritis is a condition that occurs due to arthritis surface or degenerative joint disease resulting in loss of function and pain in the knee, which often occurs in the elderly. The treatment of osteoarthritis involves medications and injections to reduce pain, including knee replacement surgery [1]. Joint replacement surgery is the standard and acceptable treatment for people with severe osteoarthritis. A million knee joint replacement surgeries have been performed worldwide [2]. The objective of knee replacement surgery will help reduce pain from osteoarthritis or accidents and osteoarthritis of the knee and will help restore the knee joint to its original mobility. Knee replacements are widely accepted, there have been reports of failures involving wear between the knee surfaces [4]. The most common cause of postoperative failure is wear and tear on the intervertebral disc surfaces 10 to 15 years after surgery [5]

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