Osteoarthritis is the breakdown of cartilage in the joints. This is followed by chronic inflammation of the joint lining. Healthy cartilage is a cushion between the bones in a joint. Osteoarthritis usually affects the hands, feet, spine, hips, and knees. People with osteoarthritis usually have joint pain and limited movement of the affected joint.

Joints Affected by Osteoarthritis
Copyright © Nucleus Medical Media, Inc.

The exact cause is unclear.

  • Increasing age
  • Excess body weight
  • Family history of osteoarthritis
  • Certain endocrine, metabolic, or neuropathic disorders, avascular necrosis
  • Having an injury or surgery to the joint surface, especially the cartilage
  • Having an occupation or doing physical activities that put stress on joints