Figure 7.
Comparison of the separation extension index (SEI) in the <40 years, >40 years, lumbar and thoracic groups. *Groups with statistical difference.
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.