Computer simulation of optimal lipped polyethylene liner orientation against prosthetic impingement.

ABSTRACT:

Background

Lipped or elevated acetabular liners are to improve posterior stability and are widely used in hip arthroplasty. However, concerns of increasing impingement exist when using such liners and optimal orientation of the elevated rim remains unknown. We aimed to identify the impact of lipped liner on the range of motion (ROM) before impingement and propose its optimal orientation.

Methods

An isochoric three-dimensional model of a general hip-replacement prosthesis was generated, and flex-extension, add-abduction and axial rotation were simulated on a computer. The maximum ROM of the hip was measured before the neck impinged on the liner. Different combinations of acetabular anteversion angles ranging from 5 to 30 degrees, and lipped liner orientations from posterior t

SUBMITTER: Hu Y 

PROVIDER: S-EPMC8981617 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature