How Lumbar Epidural Steroid Injections Work
Lumbar epidural steroid injections (LESIs) are a minimally invasive treatment option for individuals experiencing persistent lower back pain, sciatica, or nerve irritation due to spinal conditions like herniated discs or spinal stenosis. The injection delivers a powerful anti-inflammatory steroid directly into the epidural space—the area surrounding the spinal nerves—to help reduce swelling, relieve pressure, and decrease pain signals.
Most patients experience relief within a few days to a couple of weeks, though results can vary. These injections can be a valuable tool for managing pain, improving mobility, and delaying or avoiding the need for surgery.
What to Expect During and After the Procedure
The procedure is typically performed in an outpatient setting and takes about 15-30 minutes. A local anesthetic numbs the injection site, and fluoroscopy (X-ray guidance) is used to ensure precise placement of the medication. Patients may feel slight pressure during the injection but should not experience significant pain.
Recovery and Results:
- Most patients resume normal activities within 24 hours.
- Pain relief can last from several weeks to months, depending on the individual.
- Multiple injections may be recommended for long-term symptom management.