Incidental Discovery of Ochronosis During Total Knee Arthroplasty: A Case Report and Literature Review
Augustin Demain, Etienne Willemart · 2026
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Description
Augustin Demain and Etienne Willemart report a black knee found during joint replacement in a 2026 case and review. A woman aged 54 years had knee surgery, and the joint showed dark pigment that revealed ochronosis, the tissue form of a rare metabolic disease. The disease ruins large joints fast, yet it is often missed until surgery.
Past reports, though weak in design, suggest knee replacement eases pain and restores function well in this disease. Implant survival looks much like that in the general group. Known pigment buildup harms cartilage and tendons over decades, so joint checks should watch for dark tissue clues.
Catalog record
| CREATOR | Augustin Demain, Etienne Willemart |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 14995 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |