What causes hip pain?
Hip pain generally occurs with use and age as the cartilage in the hip joint wears down. Pain in the hip may involve injury to muscles, tendons or bursae (small fluid-filled sacs that cushion and lubricate joints). Some of the conditions that lead to hip pain include:
- Arthritis. The most common cause of hip pain. There are three kinds of arthritis that commonly affect the hip, including the following:
- Osteoarthritis. Involves the wearing away of cartilage that cushions the bones of the hip, letting the bones then rub together, causing pain and stiffness.
- Rheumatoid arthritis. A disease in which, for unknown reasons, the synovial membrane becomes irritated and produces too much fluid, damaging the cartilage, leading to pain and stiffness.
- Traumatic arthritis. Often the result of an injury or fracture, there are more than 300,000 hospitalizations for hip fractures in the U.S. every year.
- Avascular necrosis. Involves the loss of bone caused by insufficient blood supply, injury and bone tumors and may lead to breakdown of the hip joint.
- Bursitis. In this condition, the bursa, a closed fluid-filled sac that functions as a gliding surface to reduce friction between tissues of the body, becomes inflamed and cause pain.
What are the symptoms?
- Pain or tenderness
- Swelling or inflammation
- Difficulty walking