Arthroscopy: the first hundred are the worst.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004724:Endoscopy / Q000379:methods*; D005188:False Negative Reactions; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis* / Q000473:pathology; D007719:Knee Joint / Q000473:pathology*; D008875:Middle Aged