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What is chondromalacia?

Chondromalacia is a softening and degeneration of the cartilage in the joints of the body. It's unclear which joint you're having trouble with, but the most common joint for this to occur is the knee, and therefore is referred to as chondromalacia patella, also known as “runner’s knee.” Cartilage found under the patella (knee cap) and covering the ends of the femur (thigh bone) and tibia (shin bone) acts as a sort of natural shock absorber. Unfortunately, cartilage doesn’t come with a lifetime guarantee; wear and tear over the years may result in decreased mass of the cartilage. Once enough cartilage has degenerated, the knee can’t adequately absorb or handle shock from activities that involve repeated stress on the knee joint, such as running, for example.