Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
MicroCT analysis of symmetry of dome penetration in a mobile polyethylene core. In the mid-section of the core, a reference axis is defined through the middle of the unworn rim. The symmetry of endplate penetration was characterized by the symmetry ratio, h2/h1 assuming h1 ≥ h2. This ratio is defined such that when h1 = h2, the symmetry ratio is 1.00.
