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Lumbar Epidural Steroid Injection

A lumbar epidural steroid injection (ESI) is a non-surgical treatment used to reduce inflammation around irritated spinal nerves. It is commonly recommended for sciatica, lumbar disc herniations, and spinal stenosis causing leg pain, numbness, or tingling.

How It Works Am I a Candidate?

Common Reasons Patients Need an Injection

  • Sciatica (radiating leg pain)
  • Lumbar disc herniation
  • Lumbar spinal stenosis
  • Nerve inflammation after spine surgery

Procedure Highlights

  • Outpatient procedure
  • Imaging-guided precision
  • Minimal downtime
  • Supports rehab and recovery

What Is a Lumbar Epidural Steroid Injection?

A lumbar epidural steroid injection delivers anti-inflammatory medication into the epidural space surrounding spinal nerves. The goal is to decrease inflammation, reduce nerve irritation, and improve your ability to move and participate in physical therapy.

Important: Epidural injections are not designed to permanently cure spinal conditions. They are intended to calm inflammation and allow improved function and rehabilitation.

Conditions Treated

Sciatica

Leg pain caused by irritation or compression of lumbar nerve roots.

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Lumbar Disc Herniation

Disc material can press on nerves causing radiating pain, numbness, or tingling.

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Lumbar Spinal Stenosis

Narrowing of the spinal canal can inflame nerves and reduce walking tolerance.

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Types of Lumbar Epidural Injections

Transforaminal ESI

  • Targets a specific nerve root
  • Often used for disc herniation
  • Highly precise medication delivery

Interlaminar ESI

  • Medication spreads across multiple levels
  • Common for central stenosis
  • Addresses broader nerve irritation

Caudal ESI

  • Access through lower epidural space
  • Often used after prior surgery
  • Alternative when other approaches are limited

Who Is a Candidate?

Good Candidates Typically Have

  • Radiating leg pain or nerve symptoms
  • Symptoms that match imaging findings
  • Pain limiting activity or therapy progress
  • Desire to delay or avoid surgery when appropriate

May Not Be Ideal If

  • Pain is purely muscular or mechanical
  • Active infection is present
  • Blood thinners cannot be safely managed
  • Allergy to medication components

What Happens During the Procedure?

Before

  • Medication review
  • Imaging confirmation
  • Sterile preparation

During

  • Local anesthetic applied
  • Imaging-guided needle placement
  • Steroid medication injected

After

  • Short monitoring period
  • Same-day discharge
  • Post-procedure care instructions
Many patients feel temporary numbness or heaviness for a few hours due to the local anesthetic. This typically resolves the same day.

Expected Results

Relief Timeline

  • Immediate temporary relief or numbness may occur
  • 2–7 days: steroid effect typically begins
  • 1–3 weeks: peak improvement for many patients

Duration of Relief

  • Varies by diagnosis
  • May last weeks to months
  • Best results when combined with therapy
Best-case scenario: the injection reduces pain enough for you to rebuild strength, mobility, and walking tolerance with a structured plan.

Risks and Side Effects

Common

  • Injection site soreness
  • Temporary pain flare
  • Temporary numbness or heaviness

Steroid Effects

  • Temporary blood sugar increase
  • Facial flushing
  • Short-term sleep disruption

Rare

  • Infection
  • Bleeding
  • Nerve injury
  • Allergic reaction
Seek immediate medical evaluation for severe worsening pain, fever, new weakness, or bowel/bladder changes.

Aftercare and Recovery

First 24 Hours

  • Limit strenuous activity
  • Follow discharge instructions
  • Monitor symptom changes

Next Few Days

  • Resume walking and light activity
  • Begin or continue therapy as directed
  • Track improvement

When to Call

  • Severe symptom worsening
  • Signs of infection
  • New neurological symptoms

Schedule a Consultation

If you’re dealing with persistent leg pain, numbness, or symptoms that aren’t improving, we can review your history and imaging and determine whether a lumbar ESI makes sense.

Request an Appointment

Use our request form and our team will follow up with next steps.

Request Appointment

Call the Office

Prefer to schedule by phone? Call us and we’ll help you choose the right next step.

Call 888-978-0985

FAQ

How painful is the injection?

Most patients tolerate the procedure well. Local anesthetic is used and the procedure is brief. Soreness afterward is common and usually temporary.

How many injections can I have?

This varies based on diagnosis and response. Your provider will recommend a safe treatment plan based on your situation.

Can injections prevent surgery?

In many cases injections help control symptoms and delay or avoid surgery, especially when combined with physical therapy and a movement plan.

How long does it take to work?

Some people feel temporary relief the same day from the anesthetic. The steroid effect typically starts within 2–7 days.