The invention is a method of treating osteoarthritis or normalizing a condition of osteoarthritis comprising administering to an animal or a human in need thereof a therapeutically effective amount of 3-[2-(4-{2-ethyl-4,6-dimethyl-1H-imidazo[4,5-c]pyridin-1-yl}phenyl)ethyl]-1-[(4-methylbenzene)sulfonyl]urea or a pharmaceutically acceptable salt thereof.
