Chondrosarcoma is a type of bone
cancer that occurs in cartilage cells. Cartilage is the specialized, gristly connective
tissue that is present in adults. Most bones develop from this tissue. Cartilage plays
an important role in the growth process. There are many different types of cartilage
all over the body. Chondrosarcoma mainly affects the cartilage cells of the thighbone
(femur), arm, pelvis, or knee. In some cases, other areas (such as the ribs) may be
Chondrosarcoma is the second most
common type of primary bone cancer. A primary bone cancer is one that starts from bone.
This is different than a cancer that starts in another organ and then spreads to the
bone. Chondrosarcoma rarely affects people younger than age 20. The risk keeps rising
until age 75. It affects men and women equally.