Osteonecrosis

osteochondrosis that results in death and fracture located in hip joint

bone death caused when the bone no longer receives blood supply

necrotic damage to the jawbones caused by exposure to white phosphorus

medical condition

disease

area of necrotic bone in the mandible or maxilla

osteonecrotic disease of the foot

Osteoradionecrosis (ORN) is a serious complication of radiation therapy in cancer treatment where radiated bone becomes necrotic and exposed. ORN occurs most commonly in the mouth during the treatment of head and neck cancer, and can arise over 5 years after radiation. Common signs and symptoms include pain, difficulty chewing, trismus, mouth-to-skin fistulas and non-healing ulcers.