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You are here : 3-RX.com > Medical Encyclopedia > Diseases and Conditions > Chondromalacia Patellae
      Category : Health Centers > Bones, Joints, and Muscles

Chondromalacia Patellae

Alternate Names : Patello-Femoral Pain Syndrome, Patello-Femoral Stress Syndrome, Anterior Knee Pain, CMP

Overview, Causes, & Risk Factors | Symptoms & Signs | Diagnosis & Tests | Prevention & Expectations | Treatment & Monitoring

Chondromalacia patella (CMP) is a syndrome involving discomfort at the front of the knee. It is associated with irritation or wear on the underside of the kneecap, or patella.

What is going on in the body?

Normally, the cartilage on the underside of the kneecap glides smoothly over the surface of the thighbone, or femur. The cartilage may become soft or rough due to the normal aging process, overuse, or injury.

What are the causes and risks of the condition?

Possible causes of CMP include:

  • overuse of the knee, such as running or exercising beyond tolerance
  • increased pressure between the kneecap and thighbone, such as deep knee bending
  • bruising or fracture of the kneecap
  • lack of alignment of the legs, with knock knees. A person with knock knees has an inward curving of the legs so that the knees touch.
  • improper tracking of the kneecap due to a complete or partial dislocation
  • outward rotation of the lower leg in relation to the thigh


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    Chondromalacia Patellae: Symptoms & Signs

    Author: John A.K. Davies, MD
    Reviewer: Eileen McLaughlin, RN, BSN
    Date Reviewed: 09/04/01

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