John is right. Radiation on bone mets is used if there is severe pain in the area and/or if there is threat of fracture to the bone. Otherwise, chemo is normally used. Lucie had five different areas of bone mets at diagnosis -- skull, rib, hip, fibula (leg) and upper spine. The hip and spine mets were radiated because of severe pain and to prevent further damage. The fibula was radiated because of threat of fracture (no pain). The skull and rib were left to the chemo treatment. All treatments worked.
She has since had bone mets to the sacrum, rib, skull and fibula. Skull and fibula were in same areas as before. The sacrum (pain), skull (threat to brain), rib (pain), and fibula (pain and threat to fracture) were all radiated with success. She has had other rib mets that were left to chemo because there was no pain or threat to fracture.
Best wishes. Don