title: [Diagnostic image (382). A man with a painful knee and black cartilage].
abstract: A 56-year-old man presented with a painful knee with black pigmentation of synovium and cartilage due to ochronosis caused by alkaptonuria.
authors: Ziekenhuis Gelderse Vallei, afd. Orthopedie, Ede.
authors: R M
authors: RM
authors: Burgert
authors: A J A M
authors: AJ
authors: Ooms
mesh_terms: D000474:Alkaptonuria / Q000150:complications* / Q000175:diagnosis / Q000473:pathology; D019645:Arthroplasty, Replacement, Knee; D006801:Humans; D007719:Knee Joint / Q000473:pathology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009794:Ochronosis / Q000175:diagnosis / Q000209:etiology* / Q000473:pathology; D016896:Treatment Outcome