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