The membrane that covers the spinal cord and nerve roots in your neck is called the dura membrane. The space surrounding the dura is the epidural space. Nerves travel through the epidural space to your back and into your legs. Inflammation of these nerve roots may cause pain in these regions due to irritation from a damaged disc or from contact in some way with the bony structure of the spine.
An epidural injection places anti-inflammatory medicine into the epidural space to decrease inflammation of the nerve roots, hopefully reducing the pain in your back or legs. The epidural injection may help the injury to heal by reducing inflammation. It may provide permanent relief or provide a period of pain relief for several months while the injury/cause of your pain is healing.
An IV will be started so that relaxation medication can be given. You will be placed lying on your stomach on the x-ray table and positioned in such a way that your doctor can best visualize your back using x-ray guidance. The skin on your back will be scrubbed using 2 types of sterile scrub (soap). Next, the physician will numb a small area of skin on your low back with numbing medicine. This medicine stings for several seconds. After the numbing medicine has been given time to be effective, your doctor will direct a small needle using x-ray guidance into the tiny bony opening (sacral hiatus) just above the crease in your buttocks. A small amount of contrast (dye) is then injected to insure proper needle position in the epidural space. If the medicine does not travel high enough to reach the affected area, a small catheter will be placed into the epidural space and advanced up to the area of abnormality. Then, a mixture of numbing medicine (anesthetic) and anti-inflammatory (cortisone/steriod) will be injected.
You will go back to the recovery area where you will be monitored for 30-60 mins. You will then record the relief you experience during the next week on a post injection evaluation sheet (“pain diary”). This will be given to you when you are discharged home. You will also be given a follow-up appointment for a repeat block if indicated. These injections are usually done in a series of three (3), about two (2) weeks apart. PLEASE mail this completed “pain diary” to the doctor that is performing the procedure and their office will contact you if it is necessary to change your next appointment.
You will NOT be able to drive the day of your procedure. Your legs may feel weak and numb for a few hours.
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