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.
Graph showing stem retroversion (°) for both stems, with SEM bars. The difference in retroversion between the 2 stems was not significantly different at any time point (p = 0.4 at 3 months, p = 0.3 at 1 year, p = 0.5 at 2 years, and p = 0.3 at 5 years).
