Fig. 4.
The mean VAS scores decrease significantly in 2-level and 3-level HS. There is no difference between both groups. VAS : Visual Analogue Scale, HS : hybrid surgery.
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.