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Epithelioid sarcoma in association with total knee replacement. A case report
The Journal of Bone and Joint Surgery. British Volume
|November 1, 1986
Summary
Epithelioid sarcoma, a rare cancer, developed at the site of a chrome-cobalt total knee replacement. This occurred within what appeared to be a benign bone lesion, highlighting a potential complication.
Area of Science:
- Orthopedic surgery
- Oncology
- Pathology
Background:
- Total knee replacement (TKR) is a common orthopedic procedure.
- Complications of TKR can include infection, loosening, and periprosthetic fractures.
- Malignant transformation of benign bone lesions is exceedingly rare.
Observation:
- A case of epithelioid sarcoma is reported.
- The sarcoma developed at the site of a chrome-cobalt total knee replacement.
- The tumor arose within an apparently benign enchondroma or bone infarct.
Findings:
- Epithelioid sarcoma is a rare soft tissue sarcoma.
- The development of sarcoma at the site of a metallic implant is unusual.
- The specific association with a chrome-cobalt implant and a pre-existing benign bone lesion is novel.
Implications:
- This case suggests a potential, albeit rare, risk of sarcoma development following total knee replacement, particularly in the presence of underlying bone abnormalities.
- Further investigation may be warranted to understand the potential role of implant materials and chronic inflammation in oncogenesis.
- This finding underscores the importance of vigilant long-term follow-up for patients with metallic implants, especially if new bone lesions or pain develop.