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Black Colouration of the Knee Articular Cartilage after Spontaneously Recurrent Haemarthrosis

Kazu Matsumoto1, Daichi Ishimaru1, Hiroyasu Ogawa1

  • 1Department of Orthopaedic Surgery, Gifu University School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.

Case Reports in Orthopedics
|June 14, 2016
PubMed

Mild discolouration of the articular cartilage is known to gradually occur during aging. However, pathological tissue pigmentation is occasionally induced under several specific conditions. In the present case, we performed total knee replacement in a patient with recurrent haemarthrosis. However, during the operation, we observed severe black colouration of the knee articular cartilage, due to the deposition of hemosiderin and lipofuscin. To our knowledge, this is the first report of severe cartilage pigmentation, due to hemosiderin and lipofuscin deposition in articular cartilage.

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