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Case Reports
. 2024 May 10;14(2).
doi: 10.2106/JBJS.CC.23.00633. eCollection 2024 Apr 1.

Osteosarcoma After Total Knee Arthroplasty: A Case Report

Pablo Martínez-Collado  1 , Oriol Pujol  2 , Andrés Bustos  1 , Martí Plomer  2 , María G Carrasco  3 , Tulio Silva  4 , Roberto Vélez  3 , Joan Minguell  2
Affiliations
Case Reports

Osteosarcoma After Total Knee Arthroplasty: A Case Report

Pablo Martínez-Collado et al. JBJS Case Connect. .

Abstract

Case: A 79-year-old woman presented with a periprosthetic fracture 8 years after a total knee arthroplasty (TKA). Radiographs demonstrated tibial implant loosening with severe osteolysis. A high-grade osteosarcoma around the prosthesis was diagnosed, and a supracondylar femoral amputation was performed. After 2 years, no complications have occurred.

Conclusions: A malignant tumor around a TKA is extremely rare. Surgeons should remain vigilant with patients who present with rapidly progressive or very aggressive implant loosening with osteolysis. Owing to its complexity and potentially devastating prognosis, treatment should be guided by a specialist multidisciplinary team. Complex limb salvage procedures or amputation is usually required.

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Conflict of interest statement

Disclosure: The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (http://links.lww.com/JBJSCC/C341).

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