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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.
Osteoarthritis of the spine is a breakdown of the cartilage of the joints and discs in the neck and lower back. Sometimes, osteoarthritis produces spurs that put pressure on the nerves leaving the spinal column.This can cause weakness and pain in the arms or legs.t is a condition in which the protective cartilage that cushions the tops of bones degenerates, or wears down. This causes swelling and pain. It may also cause the development of osteophytes, or bone spurs.