Expansion of an osteoarthritic cyst associated with wear debris: a case report.
We present a case in which the growth of an intraosseous cyst arising from the proximal tibiofibular joint appeared to have been increased by polyethylene wear particles from a medial unicompartmental knee replacement. Histological examination of the cyst wall showed a histiocytic response associated with numerous polyethylene wear particles. This case demonstrates that there is a direct communication between the joint cavity and the cyst. Such communication is probably through openings in the articular cartilage large enough to allow the passage of these particles.
Crawford
R
R
Department of Orthopaedic Surgery, University of Oxford, England.
Sabokbar
A
A
Wulke
A
A
Murray
D W
DW
Athanasou
N A
NA
D000368:Aged; D019645:Arthroplasty, Replacement, Knee; D001845:Bone Cysts / Q000150:complications*; D005549:Foreign-Body Reaction; D006801:Humans; D007720:Knee Prosthesis / Q000009:adverse effects*; D008297:Male; D010003:Osteoarthritis / Q000150:complications*; D011475:Prosthesis Failure; D012086:Reoperation