Fig. 7.
Representative case: the cross-sectional area of the spinal canal in preoperative magnetic resonance imaging (MRI) (A, B) and postoperative MRI (C, D) at middle disc level (solid line at L45) showed significant enlargement.
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.