Osteoarthritis is a degenerative joint disease that is caused by the chronic breakdown and eventual loss of cartilage within the joints. As the cartilage wears away, the bones that meet at the joint b...

Osteoarthritis is a degenerative joint disease that is caused by the
chronic breakdown and eventual loss of cartilage within the joints.
As the cartilage wears away, the bones that meet at the joint begin
to rub against each other. This can cause extreme pain and can
severely reduce movement and flexibility of the joint.

Growths of
bone, called bone spurs, can also form around the edges of the joint
and cause pain. Joint swelling can also occur if the synovial
membrane lining the joint becomes irritated, producing excess fluid
that collects inside the joint.
What Causes Osteoarthritis?

More
than half of the population age 65 or older have osteoarthritis in
at least one joint. Osteoarthritis usually results from injury to a
joint or from wear and tear over time. Heredity, lack of use, and
being overweight also contribute to the development of
osteoarthritis.
Treating Osteoarthritis

Treatment can include
weight loss, physiotherapy, and medication. If the condition becomes
severe and mobility is greatly reduced, hip replacement surgery may
be necessary.