Fig. 2.
The vertebral rotation (VR) is calculated by rasterstereography as the angle between the surface orientation (N) on spinous process line (the so-called symmetry line) and the normal (z) to the frontal plane of the reference system
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.