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10. Grading

Chondromalacia patella has four diagnostic grades indicating severity.

  • One: softened cartilage is present in or around the knee.
  • Two: soft cartilage with an abnormal surface.
  • Three: thinning cartilage, active deterioration and the start of tissue erosion.
  • Four: the most severe; bone is exposed because much of the cartilage is gone and the bones are rubbing together in the knee joint.

What is Chondromalacia Patella?temet / Getty Images
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