Failure of the all-polyethylene patellar component after total knee arthroplasty.
case_series · Level IV
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- Record sourced from PubMed, PMID 10614884.
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Abstract
From 1991 to 1996, 953 cases of porous-coated anatomic modular knee prostheses with all-polyethylene patellar components were implanted. Among them, 4 cases had breakage of the patellar component at the peg-button interfaces. One had loosening of the patellar component by cutting out the patellar bony bed. Heavy body weight, weakness of the pegs of the all-polyethylene patellar component, and osteonecrosis of the patella were conceived as the causes of failure.
Medical subject headings
- Knee Prosthesis
Anatomy
- knee