Lumbar Epidural Steroid Injection

A Lumbar Epidural Steroid Injection (LESI) is a minimally invasive procedure that delivers anti-inflammatory medication directly into the epidural space of the lower spine. This treatment helps reduce nerve irritation and inflammation caused by conditions such as herniated discs, spinal stenosis, or sciatica. By calming irritated nerves, the injection can relieve pain in the lower back, buttocks, and legs—helping you move more comfortably and resume normal activities.

Quick facts

  • Setting: Outpatient, image-guided
  • Time: ~20–30 minutes
  • Anesthesia: Local with optional light sedation
  • Recovery: Same-day discharge; mild soreness possible for 1–2 days
  • Duration of relief: Weeks to months; may be repeated as needed

Who it helps

  • Lumbar disc herniation or bulging disc
  • Spinal stenosis (narrowing of the spinal canal)
  • Sciatica (leg pain from nerve root irritation)
  • Degenerative disc disease
  • Chronic lower back or leg pain not relieved by medication or therapy

How it works

When a nerve root in the lower spine becomes inflamed due to compression or injury, it can cause pain that radiates into the hips, buttocks, or legs. During a lumbar epidural steroid injection, your provider uses fluoroscopic (X-ray) guidance to precisely place a thin needle into the epidural space—the area surrounding the spinal cord and nerve roots. A corticosteroid mixed with a local anesthetic is then injected to reduce inflammation, relieve pressure, and improve nerve function.

What to expect

  • Before: Your provider will review your medical history and imaging to confirm that the injection is appropriate. You may be asked to pause certain medications before the procedure.
  • During: You’ll lie comfortably on your stomach. After numbing the skin, your provider inserts a small needle into the epidural space under X-ray guidance and injects the medication mixture.
  • After: You’ll rest briefly in recovery before going home. Some patients experience temporary numbness or increased soreness before pain relief begins, usually within a few days.

Benefits & risks

Benefits:

  • Targets inflammation and nerve irritation at the source
  • Reduces pain and improves function in the lower back and legs
  • Minimally invasive and performed under local anesthesia
  • May delay or prevent the need for surgery

Risks:

  • Temporary increase in pain or soreness
  • Infection, bleeding, or headache (rare)
  • Allergic reaction to medication (rare)
  • Temporary numbness or weakness

Is it right for me? (Checklist)

  • ✅ Low back or leg pain caused by nerve inflammation or compression
  • ✅ Pain radiates or shoots into the buttocks or legs (sciatica)
  • ✅ Persistent symptoms despite medication or physical therapy
  • ✅ Comfortable with an outpatient, image-guided procedure

Alternatives at PCET

FAQs

  • When will I feel relief? Most patients begin to notice improvement within 3–5 days.
  • How long does relief last? Results vary; many patients experience weeks to months of relief.
  • Can it be repeated? Yes—your provider may recommend up to three injections per year, depending on your response.
  • Is it painful? The injection is well tolerated; local anesthetic minimizes discomfort.
  • Is it covered by insurance? Most major insurance plans, including Medicare, cover LESI when medically indicated.

📞 Call to Schedule

Ready to explore whether a Lumbar Epidural Steroid Injection could help relieve your back or leg pain? Call (865) 579-0552 to schedule your appointment today.