cervical epidural steroid injection
A transforaminal cervical epidural steroid injection or transforaminal epidural is an outpatient procedure for treating neck, upper back, shoulder, and arm pain. Your doctor will explain whether this procedure is appropriate for your condition.
What is the epidural space?
The dura is a protective covering of the spinal cord and its nerves. The space surrounding the dura is called the epidural space. In the neck it is called the cervical epidural space.
The cervical area of the spine has seven bones, called vertebrae. Soft discs found between these vertebrae cushion them, hold them together, and control motion.
If a disc tears, chemicals inside may leak out. This can inflame nerve roots or the dura, and cause pain.
A large disc tear may cause a disc to bulge, inflaming nerve roots or the dura, and cause pain. Bone spurs, called osteophytes, can also press against nerve roots and cause pain.
How do I know if I have disc and nerve root pain?
If you have pain in your neck or upper back when you move your head or neck, you may have cervical disc and dural inflammation. If pain travels to your arm when you move your head or neck, you may have nerve root inflammation.
Common tests such as MRIs can show disc bulges and nerve root compression, but may not show a torn and leaking disc. A cervical epidural injection may provide relief if disc problems, or dural, or nerve root inflammation are causing your pain.
What is a transforaminal cervical epidural steroid injection?
In a cervical epidural steroid injection, a corticosteroid (anti-inflammatory medication) is injected into the epidural space to reduce inflammation. When it is done from the side where the nerve exits the spine, it is called a transforaminal injection. It puts the medication near the source of inflammation.
What happens during an injection?
A local anesthetic will be used to numb your skin. The doctor will then insert a thin needle directly into the epidural space. Fluoroscopy, a type of x-ray, may be used to ensure the safe and proper position of the needle. A dye may also be injected to make sure the needle is at the correct spot.
Once the doctor is sure the needle is correctly placed for the transforaminal epidural, the medication will be injected.
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What happens after an injection?
You will be monitored for up to 30 minutes after the injection. When you are ready to leave, the staff will give you discharge instructions and a pain diary. It is important to fill this out because it helps your doctor know how the injection is working.
It may help to move your neck in ways that hurt before the injection, to see if the pain is still there, but do not overdo it. Take it easy for the rest of the day.
You may feel immediate pain relief and numbness in your neck and arm for a short time after the injection. This may indicate the medication has reached the right spot.
Your pain may return after this short, pain-free period, or may even be a little worse for a day or two. This may be caused by needle irritation or by the corticosteroid itself. Corticosteroids usually take two or three days to start working, however, it can take as long as a week.
You can usually return to work the day after the injection, but always check with your doctor.
How long can I expect pain relief from a transforaminal epidural?
The extent and duration of pain relief may depend on the amount of disc, dural or nerve root inflammation. Other coexisting factors may be responsible for your pain. Sometimes an injection brings several weeks to months of pain relief, and then further treatment is needed. Other times, a single injection brings long-term pain relief. If your pain is caused by injury to more than one area, only some of your symptoms will be helped by a single injection.
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