[Skip to content]

Private Healthcare UK
Search our Site

This website is certified by Health On the Net Foundation. Click to verify.
This site complies with the HONcode standard for trustworthy health information:
verify here.


Caudal epidural and possible epidurogram

If you are considering having a caudal epidural injection or have a caudal epidural injection planned, it is important to know all you can about it. This includes:


  • why you need this procedure

  • what it will be like

  • how it will affect you

  • what risks are involved

  • any alternatives.


The information here is a guide to common medical practice. Each hospital and doctor will have slightly different ways of doing things, so you should follow their guidance where it is different from the information given here. Because all patients, conditions and treatments vary it cannot cover everything. Use this information when making your treatment choices with your doctors. You should mention any worries you have. Remember that you can ask for more information at any time.


What is the problem?

You have an inflamed intervertebral disc in your lower back. This may be causing pain running down from your back and into your leg.

Caudal epidural


What is an intervertebral disc?

An intervertebral disc is a shock absorber that sits between the bony blocks (vertebrae) that make up your spine. The discs allow you to bend and stretch, and spread the pressure of impacts when you jump up and down.

Caudal epidural 2

What is a caudal epidural?

A caudal epidural injection in the lower back can be used to treat a number of different painful conditions. The injection is most commonly used to treat pain in the leg, called sciatica. The injections are given into your back, at the lowest point of your spine. The injection goes into an area known as the epidural space. This is the space that surrounds the spinal cord. The nerves that carry pain sensations pass through this space.


A caudal epidural injection bathes the nerves and intervertebral discs in local anaesthetic and, if used, steroid solution. Only a small amount of steroid is needed. This will not cause any of the side effects sometimes associated with taking steroid tablets. They are not the same kind of steroids that athletes may take.


This steroid injection relieves pain by reducing the inflammation. Pain from inflamed nerves that is felt in the leg (sciatica) can be treated. By bathing inflamed discs, caused by injury or general wear and tear (degeneration), some lower back pain may be reduced. The medication is injected just outside the covering of the spinal cord, which is called the dura; hence the name epidural.


Sometimes your doctor may inject a dye into the spinal canal. This would be to perform a test called an epidurogram. The dye is x-ray opaque, meaning it shows up on x-rays. The test may show areas of scarring that may be causing some of your pain. Scarring may be present, particularly if you have had previous surgery.


What has gone wrong?

Your intervertebral discs in your spine have suffered degeneration, which is general wear and tear, or damage from an injury. When the disc is inflamed, the nearby nerves can become irritated. These nerves supply sensation to the leg and hence the brain is fooled into believing that the leg is injured. This is not the case; although you may feel leg pain the problem is in the spine.


The aims

The aim of the procedure is to reduce the inflammation of the disc. This in turn reduces the leg pain and some of the lower back pain. 


The benefits

Your pain should be reduced and you should be able to move around more easily. The physiotherapist will show you exercises to help prevent the problem happening again. If successful, this treatment can avoid the need for surgery.


Are there any alternatives?

By the time that you have the caudal epidural injection you should have already tried other more simple treatments. These include rest, painkilling and anti-inflammatory tablets, and physiotherapy with exercise.


What if you do nothing?  

If you do nothing there are several things that may happen:


  • With time and rest the inflammation and pain may settle on its own

  • The pain and difficulty in moving around may remain the same

  • The pain may get worse

  • The disc may become further damaged and injure the nerves that control movement. You may then develop weakness and difficulty in moving your legs. Some of this may become permanent

  • In rare, but severe cases, you may lose control of your bladder and bowels. The nerves that control these are in the same area of the spine and can be damaged by an inflamed disc


Who should have it done?

The following groups of patients should have the procedure done:


  • Patients with leg pain caused by inflamed intervertebral discs

  • Patients with low back pain that has not settled by other means


Who should not have it done?

Each patient must make the final decision as to whether to proceed or not. If you are unhappy about the procedure for any reason you should not continue.


There are specific medical situations when a caudal epidural should not be done and they are as follows:


  • When a patient is on medication that prevents blood from clotting, such as warfarin. This would lead to more bleeding than normal. It may be possible to stop the medication a few days before the procedure. This will need to be discussed with your doctor

  • When a patient is suffering from an illness that prevents blood from clotting, such as haemophilia. This would also lead to more bleeding than normal

  • When there is infection of the skin over the site where the needle needs to be put in

  • When a patient has a bloodstream infection

  • When a patient has noticed a recent worsening of their symptoms, especially weakness and loss of bladder or bowel control


Author: Dr Sean White FRCA. Consultant in pain and anaesthesia

© Dumas Ltd 2006

Get a quote

Get a quote for private treatment

We will send your request for information regarding caudal epidural injection, or a quotation, to up to three providers of private healthcare services in your local area

Complete the enquiry form...

Find a service

Find a doctor

We maintain a database of around 2,500 UK consultants and specialists in private practice. You can search by specialty or postcode.

Search for a doctor....

Get a Quote

Private treatment

Get a quote now

Typical Costs

Private treatment

View typical costs