Interlaminar versus transforaminal epidural steroids for the treatment of subacute lumbar radicular pain: a randomized, blinded, prospective outcome study.

Background: There is uncertainty in the literature over the relative effectiveness of lumbar epidural interlaminar (IL) steroid injection versus transforaminal (TF) steroid injection for lumbar radiculopathy. Most studies to date have been retrospective, or technically focused.

Objective: To complete a randomized, blinded, prospective outcome study of the short-term benefit for IL versus TF epidural steroids for the treatment of subacute lumbar radicular pain.