J Bone Metab.  2023 Aug;30(3):283-287. 10.11005/jbm.2023.30.3.283.

Black Bone Disease: Ochronotic Arthritis Detected during Knee Arthroplasty

Affiliations
  • 1Department of Orthopedic Surgery, Ewha Womans University, College of Medicine, Mokdong Hospital, Seoul, Korea
  • 2Department of Orthopedic Surgery, Ulsan Hospital, Ulsan, Korea

Abstract

Alkaptonuria is an extremely rare autosomal recessive metabolic disorder characterized by dark urine, ochronosis, and arthritis of the spine and major joints. We report a case of ochronotic arthritis observed during total knee replacement surgery in a 65-year-old male patient with no relevant medical history. Based on a literature review, this is the first case of ochronotic arthritis reported in Korea.

Keyword

Alkaptonuria · Arthritis · Arthroplasty · Knee · Ochronosis
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