Comparison of the contact stress between the sensor and real polyethylene insert in total knee arthroplasty: a finite element analysis.

ABSTRACT:

Background

In implants, sensors are made of an acrylic-like plastic, while polyethylene (PE) inserts are made of ultra-high-molecular-weight PE (UHMPE). Thus, the stress distribution on the sensor may be different from that on the PE insert due to variations in material properties. The present study sought to analyze and compare the stress distribution profile between the sensor and PE insert after total knee arthroplasty (TKA).

Methods

Finite element analysis was performed to estimate contact stress between the sensor and PE insert after TKA. The materials of the femoral component, sensor, and PE insert were determined as cobalt-chrome-molybdenum, acryl plastic, and UHMWPE, respectively. The stiffness levels of medial and lateral soft tissue were set at 28.8 N/mm and 18.8 N

SUBMITTER: Song SJ 

PROVIDER: S-EPMC7723577 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature