The Effect of Patient-Related Factors on the Primary Fixation of PEEK and Titanium Tibial Components: A Population-Based FE Study

Corine E. Post*, Thom Bitter, Adam Briscoe, Inger van Langen, René Fluit, Nico Verdonschot, Dennis Janssen

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

99 Downloads (Pure)

Abstract

Polyetheretherketone (PEEK) is of interest as implant material for cementless tibial total knee arthroplasty (TKA) components due to its potential advantages. One main advantage is that the stiffness of PEEK closely resembles the stiffness of bone, potentially avoiding peri-prosthetic stress-shielding. When introducing a new implant material for cementless TKA designs, it is essential to study its effect on the primary fixation. The primary fixation may be influenced by patient factors such as age, gender, and body mass index (BMI). Therefore, the research objectives of this finite element (FE) study were to investigate the effect of material (PEEK vs. titanium) and patient characteristics on the primary fixation (i.e., micromotions) of a cementless tibial tray component. A total of 296 FE models of 74 tibiae were created with either PEEK or titanium material properties, under gait and squat loading conditions. Overall, the PEEK models generated larger peak micromotions than the titanium models. Differences were seen in the micromotion distributions between the PEEK and titanium models for both the gait and squat models. The micromotions of all tibial models significantly increased with BMI, while gender and age did not influence micromotions.
Original languageEnglish
Article number116
Number of pages11
JournalBioengineering
Volume11
Issue number2
Early online date25 Jan 2024
DOIs
Publication statusPublished - Feb 2024

Fingerprint

Dive into the research topics of 'The Effect of Patient-Related Factors on the Primary Fixation of PEEK and Titanium Tibial Components: A Population-Based FE Study'. Together they form a unique fingerprint.

Cite this