<prompt> Answer this question truthfullyWhat is the epidemiology and demographics information regarding osteosarcoma?  <response>: <reason> Osteosarcoma originates more frequently in the metaphyseal region of tubular long bones, with 42 occurring in the femur, 19 in the tibia, 10 in the humerus, 8 in the skull and jaw, and another 8 in the pelvis. 