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.
(a) ODI forest plot of comparison between ACD group and non-ACD Group. (b) ODI funnel plot of comparison between ACD group and non-ACD group. (c) VAS LP forest plot of comparison between ACD group and non-ACD group. (d) VAS LP funnel plot of comparison between ACD group and non-ACD group. ODI Oswestry Disability Index, ACD annular closure device, VAS LP visual analogue scale-leg, CI confidence interval.
