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Acta Orthop Traumatol Turc. 2009 Jan-Feb;43(1):67-71. doi: 10.3944/AOTT.2009.067.

[Knee ochronotic arthropathy and arthroscopic findings].

[Article in Turkish]

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  • 1Haseki Eğitim ve Araştirma Hastanesi, Ortopedi ve Travmatoloji Kliniği, Istanbul, Turkey.


Ochronotic arthropathy is a rare condition found in patients with alkaptonuria which is a hereditary metabolic disease associated with deposition of homogentisic acid derivatives in the articular cartilage, menisci, ligaments, and connective tissues due to homogentisic acid oxidase deficiency. These pigmentary changes are termed ochronosis. We presented a 50-year-old woman in whom arthroscopic examination of the right knee revealed brown-black discoloration of the articular cartilage and menisci leading to the diagnosis of alkaptonuria by further laboratory examinations.

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