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.
Patient-reported outcome measures for the reoperations at the 1st adjacent level (L3–4) with decompression and extended fusion (n = 41) or decompression only (n = 79) for patients who underwent decompression and fusion for L4–5 spinal stenosis with degenerative spondylolisthesis. Non-responders at the 1- and 2-year follow-up were not excluded. The error bars represent 95% confidence intervals.
