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.
Prone instability test. The left image indicates the starting position with feet on the floor. The right image indicates the end position of the test with the feet lifted off the floor. The white arrows indicate the posterior-anterior force applied by the examiner.49
