Question: what are the risk factors for osteosarcoma?
Answer: Age. The risk of osteosarcoma is highest for those between the ages of 10 and 30, especially during the teenage growth spurt. ... 
Height. Children with osteosarcoma are usually tall for their age. ... 
Gender. ... 
Race/ethnicity. ... 
Radiation to bones. ... 
Certain bone diseases. ... 
Inherited cancer syndromes.