Introduction. In patients who have undergone a total joint replacement, any mass occurring in or adjacent to the joint needs thorough investigation and a wear debris-induced cyst should be suspected. Case presentation. An 81-year-old man presented with a painful and enlarging mass at the popliteal fossa and calf of his right knee. He had had a total right knee replacement seven years previously. Plain radiographs showed narrowing of the medial compartment. Magnetic resonance imaging showed a cystic lesion at the postero-medial aspect of the knee joint mimicking popliteal cyst or soft tissue sarcoma. Fine needle aspiration was non-diagnostic. A core-needle biopsy showed metallosis. Intraoperative findings revealed massive metallosis related to extensive polyethylene wear, delamination and deformation. Revision knee and patella arthroplasty was carried out after a thorough debridement of the knee joint. Conclusion. Long-term follow-up is critical for patients with total joint replacement for early detection of occult polyethylene wear and prosthesis loosening. In these cases, revision arthroplasty may provide a satisfactory knee function. © 2009 Mavrogenis et al; licensee BioMed Central Ltd.
CITATION STYLE
Mavrogenis, A. F., Nomikos, G. N., Sakellariou, V. I., Karaliotas, G. I., Kontovazenitis, P., & Papagelopoulos, P. J. (2009). Wear debris pseudotumor following total knee arthroplasty: A case report. Journal of Medical Case Reports, 3. https://doi.org/10.1186/1752-1947-3-9304
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