 Patients with approximately 3 months of low back pain and leg pain due to intervertebral disc herniation were randomized to transforaminal epidural injections of 2 lidocaine and either clonidine 200 or 400 micrograms or triamcinolone 40 mg corticosteroid. Patients received one to three injections administered at about 2 weeks apart. Patients, investigators, and study coordinators were blinded to the treatment. The primary outcome was an 11-point Pain Intensity Numerical Rating Scale at 1 month. The hypothesis was that clonidine will be as effective as steroid for this condition. 