Is Combined Anteversion Equally Affected by Acetabular Cup and Femoral Stem Anteversion?

ABSTRACT:

Background

To create a safe zone, an understanding of the combined femoral and acetabular mating during hip motion is required. We investigated the position of the femoral head inside the acetabular liner during simulated hip motion. We hypothesized that cup and stem anteversions do not equally affect hip motion and combined hip anteversion.

Methods

Hip implant motion was simulated in standing, sitting, sit-to-stand, bending forward, squatting, and pivoting positions using the MATLAB software. A line passing through the center of the stem neck and the center of the prosthetic head exits at the polar axis (PA) of the prosthetic head. When the prosthetic head and liner are parallel, the PA faces the center of the liner (PA position = 0, 0). By simulating hip motion in 1-degree

SUBMITTER: Pour AE 

PROVIDER: S-EPMC8197737 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature