Fracture of an uncemented tantalum patellar component

Autor: Nathan L. Grimm, MD, Robert A. Henderson, MD, MSc, Joseph J. Kavolus, MD, MSCR, Patrick D. Millikan, MD, Paul F. Lachiewicz, MD
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Arthroplasty Today, Vol 2, Iss 2, Pp 45-47 (2016)
Druh dokumentu: article
ISSN: 2352-3441
DOI: 10.1016/j.artd.2016.01.005
Popis: A 62-year-old man presented with the acute, atraumatic onset of pain 3 years after uncemented right total knee arthroplasty. He complained of new mechanical locking with the knee held in extension on examination and unable to flex the knee. On the plain radiographs, the patellar component peg was fractured and the plate was dislocated. The knee was immobilized, and revision to a cemented 3-peg component was performed. Fracture of a single-peg, tantalum-backed uncemented patellar component has not been described. Clinical suspicion for this should be given in the setting of acute locking. We recommend revision with a cemented polyethylene component.
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