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Chondromalacia Patella
(Patellofemoral Syndrome)

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Chondromalacia patella facts

  • Chondromalacia patella is the most common cause of chronic knee pain.
  • Chondromalacia patella has also been called patellofemoral syndrome.
  • The pain of chondromalacia patella is aggravated by activity or prolonged sitting with bent knees.
  • Abnormal "tracking" allows the kneecap (patella) to grate over the lower end of the thighbone (femur), causing chronic inflammation and pain.
  • Treatment involves improving the alignment of the patella during contraction of the thigh muscle.

What is the chondromalacia patella?

Chondromalacia patella is abnormal softening of the cartilage of the underside the kneecap (patella). It is a cause of pain in the front of the knee (anterior knee pain). Chondromalacia patella is one of the most common causes of chronic knee pain. Chondromalacia patella results from degeneration of cartilage due to poor alignment of the kneecap (patella) as it slides over the lower end of the thighbone (femur). This process is sometimes referred to as patellofemoral syndrome.

What causes chondromalacia patella?

The patella (kneecap) is normally pulled over the end of the femur in a straight line by the quadriceps (thigh) muscle. Patients with chondromalacia patella frequently have abnormal patellar "tracking" toward the lateral (outer) side of the femur. This slightly off-kilter pathway allows the undersurface of the patella to grate along the femur, causing chronic inflammation and pain. Certain individuals are predisposed to develop chondromalacia patella: females, knock-kneed or flat-footed runners, or those with an unusually shaped patella undersurface.

Medically Reviewed by a Doctor on 7/27/2012

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Source: MedicineNet.com
http://www.medicinenet.com/patellofemoral_syndrome/article.htm

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