Bone cancer is a common form of cancer characterized by abnormal cell growth in the skeletal system. Individuals with this disorder may grow harmful tumors in the bone that can spread to the rest of the body if not diagnosed and treated early. Bones are important for maintaining the structure of the body and work closely with muscles to provide various movements. Bone cancer can thus cause individuals to be less capable of performing important movements, like walking and running. Doctors are usually able to diagnose this defect early in the abnormal growth process, as the resulting symptoms are quickly apparent. Treatment is developed on a case-by-case basis and depends on the specific needs of the patient. For prevention purposes, bone specialists may suggest individuals eat a high-calcium diet, and exercise regularly. If an individual's cancer has progressed, doctors may suggest chemotherapy to combat cancer symptoms.