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.
Mechanisms of femoroacetabular impingement. Pincertype FAI occurs due to acetabular retroversion, leading to labral and acetabular damage at the anterior rim (B; shaded area). Cam-type FAI results from a prominent head-neck junction, leading to chondral damage within the anterosuperior acetabulum (C; shaded area).
