Figure 4.
DDB designs are based on the commonly used classification, which distinguishes scoliotic curves into thoracic (a), thoracolumbar (b), lumbar (c), and double major (d).
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.