Knee pain affects people of all ages and may be the result of an injury such as a ruptured ligament or torn cartilage. Medical conditions — including arthritis, gout and infections — can also cause knee pain.

 

• The location and severity of knee pain may vary, depending on the cause of the problem.

 

Signs and symptoms that sometimes accompany knee pain include:

• Swelling and stiffness

• Redness and warmth to the touch

• Weakness or instability

• Popping or crunching noises

Inability to fully straighten the knee

 

Call your doctor if you:

• Can't bear weight on your knee

• Have marked knee swelling

• Are unable to fully extend or flex your knee

• See an obvious deformity in your leg or knee

• Have a fever, in addition to redness, pain and swelling in your knee

• Feel as if your knee is unstable or your knee "gives out"

 

Many types of minor knee pain respond well to self-care measures. Physical therapy and knee braces also can help relieve knee pain. In some cases, however, your knee may require surgery.