[Epidural steroid injections in the treatment of back pain. A retrospective and prospective analysis.].

Epidural steroid injections are frequently used in the conservative treatment of backache, although they are still subject to critical discussion. Relief of pain is attributed to the anti-inflammatory effect of the steroid. During a 3-year period, 53 patients with back pain or differing aetiology were treated with one or more epidural injections of 14 mg betamethasone (2 ml Celestan) in a prospective and retrospective fashion. Patients were followed up for 1 year. Immediately after the injection 68% free of pain. Freedom from pain or improvement totally free of pain. Freedom from pain or improvement was reported by 39% of patients after 2 weeks and by 31% after 6 months to 1 year. Patients with acute pain (up to 6 months) responded better than patients with chronic symptoms. No significant correlations were detected between response and other characteristics, e.g. age, sex, number of injections, type of pain, intensity of pain, or psychological overlay. For patients with acute pain epidural steroid injections seem to be a safe, appropriate and promising procedure.