Facet joint blocks or facet injections are a diagnostic tool and therapeutic pain relief treatment for those who suffer from debilitating back, leg and neck pain as a result of facet disease (inflammation and deterioration of the facet joints in the spinal column).
What is Facet Syndrome?
Before we dive into facet blocks/injections, it's important to first understand facet disease/syndrome. The facet joints are small stabilizing joints in the spine, located behind and under the vertebrae. They allow movement and twisting of the spine near the neck and lower back, but not too much, or we'd look like one of those inflatable things outside car dealers, flopping all over the place with no stability.
Inside the face of each facet joint is a low-friction pad made from moist cartilage. Each joint is then surrounded by a capsule full of its own supply of lubrication, keeping those cartilage pads moist. In addition, nerve fibers sit in the capsule informing the brain of any problems; we typically feel this signal as pain. Since these joints are almost in constant motion, helping keep us upright, they can experience a lot of abuse and may become worn out. This degradation of the pads and bone can lead to bone spurs, facet joint enlargement and inflammation; this is known as facet joint disease.
Over time, osteoarthritis may form. An emergency reflex of the back muscles called guarding takes place when facet joints are inflamed. They tense up and spasm, picking up the slack in supporting our back. However, muscles can become tired, and when this happens, the cycle is repeated all over again, creating a chronic case of facet syndrome.
Treatment Options for Facet Joint Issues
A facet joint block injection can also be used as a means of long-lasting pain relief. Following the procedure detailed above, the addition of a time-release anti-inflammatory steroid (Cortisone) is injected into the joint. The reduction of swelling, in many cases, reduces pain for up to a year. The procedure can be repeated up to three times a year if needed, but long-term use is not recommended as injected steroids can cause further damage.
Instead, a facet block should be used in conjunction with other non-invasive treatment options:
Those who are overweight/obese, have a family history of facet syndrome, arthritis, gout, have an injury/trauma like whiplash, or have a training regimen, job or sport that requires extensive use of facet joints are most at risk. That said, there are several treatment options available, but first, a diagnosis must be made. Your doctor will likely perform an X-ray, CT and an MRI (in this case, an MRI can be used to rule out a slipped disc). However, the best diagnostic test is the subject of this article, the facet joint block/injection.
Performed with X-ray guidance or fluoroscopy, a needle is inserted into the inflamed facet joint, and a combination of contrast dye and anesthetic is injected. If pain stops, the source of your pain is confirmed, and treatment can begin.
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