The epidural cavity is the space surrounding the spinal cord, which extends from the skull to the tailbone, and consists of fat, nerves and blood vessels. Nerves in this space can be blocked by injecting an anaesthetic, or a constricted nerve can be relieved of pain and inflammation by injecting steroid medication into the epidural space.
An epidural spinal injection or epidural block is a non-surgical treatment option for relieving back pain and other symptoms.
Epidural steroid injections contain a strong anti-inflammatory agent (steroid) and an anaesthetic for pain relief. It is administered into the epidural space of the spine, the space between the outermost covering of the spinal cord (dura mater) and the wall of the spinal canal. The epidural space is approximately 5 mm wide and is filled with spinal nerve roots, fat tissue and small blood vessels.
The facet joints are the tiny joints situated at the upper and lower part of each vertebra connecting one vertebra to the other. Each of the vertebrae has four facet joints which include a pair that connect to the vertebra above (superior facets) and another pair that connects to the vertebra below (inferior facets).
Sacroiliac joints (SI joint) are joints in the lower back region, located where the sacrum and ilium bones conjoin. Even though these joints are small and have limited motion, they have an important role of connecting your spine to the pelvic bone and thus the lower part of your body.
Medical branch block is an injection of a local anaesthetic near the medial branch nerves to temporarily block the pain signal carried from the facet joints of the spine to the brain. It is used to assist your physician in diagnosing the cause of your back pain.
Lumbar spine injections are utilised in the assessment and treatment of low back pain. These injection procedures are valuable in determining whether structures are the source for low back pain. Pain initiated by lumbar facet joints is characteristically experienced in the lower back, hip, buttock, and/or leg.