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 The region of interest outlined with a graphic cursor around the multifidus muscle was calculated as a cross-sectional area. bThe black dot is a midpoint of the pedicle, and the white dot is an ideal entry point. The entry point depth is determined by measuring the length from skin to the ideal entry point at each pedicle level
