What are the signs and symptoms of patellofemoral syndrome?

Generalized pain around the kneecap is the most common symptom of patellofemoral syndrome:
  • The patient may have a history of a dull, aching pain in the knee, not necessarily in one specific area.

  • If the pain is in front of the knee below the kneecap, it is probably caused by tendon inflammation called infrapatellar tendonitis or "jumper's knee".

  • Running, going down stairs, squatting, or sitting for a long time with knees bent usually increases pain.

  • Although full range of motion is usually possible, flexing the knee completely is painful.

  • Crepitus (a crackling noise under the patella) may occur during knee movement.

  • A slight swelling may exist

  • Symptoms may be present in one or both knees.

  • Decreased kneecap motion
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