Arthritis in the elderly.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D001168:Arthritis / Q000503:physiopathology*; D002648:Child; D002675:Child, Preschool; D002805:Chondrocalcinosis / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000503:physiopathology; D011111:Polymyalgia Rheumatica / Q000503:physiopathology; D012737:Sex Factors