NEJM - Glucocorticoid Injections for Spinal Stenosis"

"A Randomized Trial of Epidural Glucocorticoid Injections for Spinal Stenosis"
http://www.nejm.org/doi/full/10.1056/NEJMoa1313265
"CONCLUSIONS

In the treatment of lumbar spinal stenosis, epidural injection of glucocorticoids plus lidocaine offered minimal or no short-term benefit as compared with epidural injection of lidocaine alone. (Funded by the Agency for Healthcare Research and Quality; ClinicalTrials.gov number, NCT01238536.)"