combustion. n. 1. the process of burning. 2. (Chemistry) any process in which a substance reacts with oxygen to produce a significant rise in temperature and the emission of light. 3. (Chemistry) a chemical process in which two compounds, such as sodium and chlorine, react together to produce heat and light.
Facet joint syndrome is an arthritis-like condition of the spine that can be a significant source of back and neck pain. It is caused by degenerative changes to the joints between the spine bones. The cartilage inside the facet joint can break down and become inflamed, triggering pain signals in nearby nerve endings.
Facet arthritis often proceeds along with disc disease of the lumbar spine. Spinal stenosis is also often seen in patients with lumbar spine arthritis. As arthritis progresses, nerves become pinched, leading to symptoms of spinal stenosis. These symptoms may include leg pain, numbness, tingling, and difficulty walking.