Dorsal Root Ganglion block / Nerve Root Block Injections

What is a Dorsal Root Ganglion block / Nerve Root Block?

It is an injection of steroid (anti-inflammatory) and local anaesthetic (numbing medicine) that is inserted into the root of your nerves where it leaves the spinal cord. These injections can be performed anywhere in your spine depending on your pain site e.g. neck (cervical), back of chest (thoracic), lower back (lumbar). They are mainly used for radicular pain (sciatica or arm pain).

How does the injection help?

The injection helps by numbing and reducing inflammation or swelling of the affected nerves. It aids in identifying the source and relieving your pain.

What will happen to me during the treatment?

The injections are performed under x-ray guidance in the theatres by the Pain Management Consultant. A local anaesthetic will be used to numb the skin before the needle is inserted.

How long will the procedure take?

The procedure usually takes between 15 – 20 minutes however you will be expected to arrive 30 minutes before for consent and ward check.

What are the risks involved?

Failure – may not work well

Worse Headache

Worsening of pain before it gets better

Pain and bruising at the site of injection

Steroid effects e.g. facial flushing, increase in blood sugar for Diabetic patient

Infection is rare

Leg or Arm weakness is a rare complication

Injury or collapse of the lung (Pneumothorax) for the thoracic area only

What happens after the procedure?

You will be moved to the recovery area where the nurse will check your heart rate and blood pressure, followed by transfer to the ward. Your Pain Management Consultant will perform an initial assessment to ascertain the effectiveness and review you before discharge.

Will there be a follow-up appointment after the injection?

Yes, your Pain Management Consultant will follow up in 6 - 8 weeks in the Pain clinic to ascertain the effectiveness of the treatment and discuss further management.

Is there any other procedure planned after this injection?

We will consider another procedure which involves modulating the nerves using Radio waves provided the initial injection helps. This will give you a prolonged period of pain relief.