Also known as: ORN-
ORN has various meanings in the Medical category. Discover the full forms, definitions, and usage contexts of ORN in Medical.
Osteoradionecrosis is a possible complication following radiotherapy where an area of bone does not heal from irradiation. Irradiation of bones causes damage to osteocytes and impairs the blood supply. The affected hard tissues become hypovascular, hypocellular and hypoxic. Osteoradionecrosis usually occurs in the mandible, and causes chronic pain and surface ulceration.
MedicalOrnithine is a non proteinogenic amino acid that plays a role in the urea cycle. Ornithine is abnormally accumulated in the body in ornithine transcarbamylase deficiency. The radical is ornithyl.
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