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Osteoarthritis is a joint disease that mostly affects cartilage. Cartilage is the slippery tissue that covers the ends of bones in a joint. Healthy cartilage allows bones to glide over each other. It also helps absorb shock of movement.
As a result of the degeneration of discs and other cartilage, spurs or abnormal growths called osteophytes may form on the bones in the neck. These abnormal growths can cause narrowing of the interior of the spinal column or in the openings where spinal nerves exit, a related condition called cervical spinal stenosis.