Extensive osteolytic cystlike area associated with polyethylene wear debris adjacent to an aseptic, stable, uncemented unicompartmental knee prosthesis: case report.
We present the case of a patient who after uncemented unicompartmental knee arthroplasty developed a large osteolytic cystlike area in the lateral aspect of the tibial metaphysis, contralateral to a well-fixed tibial component at revision surgery. The lesion contained fibrotic soft tissue, evidence of a foreign-body giant cell reaction and polyethylene particles, but no metal wear debris, infection, or malignancy. This case demonstrates that there is a direct communication between the joint cavity and the cyst.
Sanchis-Alfonso
V
V
Department of Orthopedic Surgery, Hospital Arnau de Vilanova, Av. Cardenal Benlloch No 36, pta 23-B, 46021 Valencia, Spain. visaal@teleline.es
Alcacer-García
J
J
D001843:Bone Cements; D003560:Cysts / Q000209:etiology / Q000473:pathology; D005549:Foreign-Body Reaction / Q000209:etiology* / Q000473:pathology; D015726:Giant Cells; D006801:Humans; D007719:Knee Joint; D007720:Knee Prosthesis / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D010014:Osteolysis / Q000209:etiology* / Q000473:pathology; D020959:Polyethylene / Q000009:adverse effects*; D011475:Prosthesis Failure
D001843:Bone Cements; D020959:Polyethylene