What Are Causes of Knee Pain?

Q:
What are causes of knee pain?

A:
Knee pain can be caused by injuries, mechanical problems, types of arthritis and other problems.

1. Injuries – A knee injury can affect any of the ligaments, tendons or fluid-filled sacs that surround your knee joint as well as the bones, cartilage and ligaments that form the joint itself.

2. Mechanical problems – Some examples of mechanical problems that can cause knee pain include:

  • Loose body. Sometimes injury or degeneration of bone or cartilage can cause a piece of bone or cartilage to break off and float in the joint space.
  • Iliotibial band syndrome. This occurs when the tough band of tissue that extends from the outside of your hip to the outside of your knee becomes so tight that it rubs against the outer portion of your femur.
  • Dislocated kneecap. This occurs when the triangular bone that covers the front of your knee slips out of place, usually to the outside of your knee.
  • Hip or foot pain. If you have hip or foot pain, you may change the way you walk to spare these painful joints. But this altered gait can place more stress on your knee joint.

3. Types of arthritis – More than 100 different types of arthritis exist. The varieties most likely to affect the knee include:

  • Osteoarthritis. It’s a condition that occurs when the cartilage in your knee deteriorates with use and age.
  • Rheumatoid arthritis. It is an autoimmune condition that can affect almost any joint in your body, including your knees.
  • Gout. This type of arthritis occurs when uric acid crystals build up in the joint.
  • Pseudogout. It is caused by calcium-containing crystals that develop in the joint fluid.
  • Septic arthritis. Sometimes your knee joint can become infected, leading to swelling, pain and redness.

For more info you should go to a specialist.

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