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.
Attachment of markers on the lower extremity (the axis of angular displacement was defined as follows: red line: positive x-axis vector; green line: positive y-axis vector; blue line: positive z-axis vector; white circle: attachment of markers) by Visual 3D professional v6.03.4.
