Figure 1.
Model construction. (a) Cancellous and cortical bones and the intervertebral discs. (b) Normal spine model excluding the rib cage. (c) Normal spine model including the rib cage.
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.