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.
A magnified anterior posterior radiograph view taken from a pelvis radiograph with an increased alpha angle. The alpha angle subtended between a line from the midline of the femur to the center of the femoral head and a line from the center of the femoral head to the point at which the femoral head deviated from a circular template overlay
