Related Experiment Video
Updated: May 4, 2026
The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report
Published on: August 4, 2022
A case of ochronotic arthropathy treated with total hip arthroplasty
Shinichi Inoue1, Yasuo Iwata, Kousei Yoh
1Department of Orthopedic Surgery, Hyogo College of Medicine , 1-1 Mukogawa-cho, Nishinomiya 663-8501 , Japan.
Abstract:
Abstract We report a case of ochronotic arthropathy treated with total hip arthroplasty. The articular cartilage of the patient's femoral head and synovium displayed black pigmentation. Microscopically, the articular cartilage revealed reddish-brown pigmentation (particularly in deep cartilage), necrotic chondrocytes, and slight black pigmentation in the cytoplasm of chondrocytes. Electron microscopy revealed electron-dense material deposited predominantly along and between collagen fibers.
