Randomized Controlled Trial
Effect of caudal epidural steroid or saline injection in chronic lumbar radiculopathy: multicentre, blinded, randomised controlled trial.
BMJ. 2011 Jan 1;343:d5278.
Review
Guideline update for the performance of fusion procedures for degenerative disease of the lumbar spine. Part 7: lumbar fusion for intractable low-back pain without stenosis or spondylolisthesis.
J Neurosurg Spine. 2014 Jul 1; 21 (1): 42-7.
Randomized Controlled Trial
A randomized, double-blind, active-controlled trial of fluoroscopic lumbar interlaminar epidural injections in chronic axial or discogenic low back pain: results of 2-year follow-up.
Pain Physician. 2013 Sep 1;16(5):E491-504.