Nerve blocks are a type of procedure that involves injecting a local anaesthetic or other medications into or around a specific nerve or group of nerves to block pain signals from being transmitted to the brain. Radiology guidance is usually used to assist with the procedure eg. X-ray/fluoroscopy, CT or ultrasound). Nerve blocks are often used to treat chronic pain, which is defined as pain that persists for more than three to six months.

There are several different types of nerve blocks, including:

• Epidural nerve blocks: Epidural nerve blocks are injections of local anesthetics and other medications into the epidural space (the space around the spinal cord). They are often used to treat pain in the lower back, legs, and feet.

• Facet joint injections: Facet joint injections are injections of local anesthetics and other medications into the facet joints, which are small joints located in the spine. They are often used to treat pain in the neck or back.

• Peripheral nerve blocks: Peripheral nerve blocks are injections of local anesthetics and other medications into or around a specific nerve or group of nerves outside of the spine. They are often used to treat pain in a specific area of the body, such as the hand, arm, or leg.

• Trigger point injections: Trigger point injections are injections of local anesthetics and other medications into muscle trigger points, which are areas of muscle that are painful when pressed. They are often used to treat muscle pain and tension.

Nerve blocks may be useful for patients suffering from chronic pain who do not respond to other therapies, such as medication or physical therapy. They may help manage the pain and improve the patient’s quality of life. Sometimes, nerve blocks are combined with other therapies, such as medications or physical therapy, to help manage the pain.