Patellar meniscus in total knee arthroplasty.
Twenty-four clinically successful, autopsy retrieved porous-coated anatomic total knee arthroplasty (TKA) specimens were evaluated to determine the structure and function of the patellar meniscus. Mean implant duration was 76 months (range: 11-135 months). Histological examination showed the patellar meniscus to be composed of dense fibrous tissue with scattered regions of chronic granulomatous response to polyethylene debris. Patellar wear and polyethylene exposed patellar surface area were correlated with implant duration (r = 0.47, P = .03; r = 0.52, P = .06). Postoperative patellar tilt was also associated with patellar component wear (r = 0.64, P = .03). No other clinical measures were significantly associated with patellar wear or exposed surface area. Additional research is needed to determine what role, if any, the patellar meniscus plays in TKA outcomes.
Lavernia
Carlos J
CJ
Orthopaedic Institute at Mercy Hospital, 3659 S Miami Ave, Ste 4008, Miami, FL 33133, USA.
Sheldon
Daniel A
DA
Hernández
Victor H
VH
D'Apuzzo
Michele R
MR
Lee
David J
DJ
Krackow
Kenneth A
KA
Hungerford
David S
DS
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee; D020099:Coated Materials, Biocompatible; D005260:Female; D005355:Fibrosis; D006099:Granuloma / Q000473:pathology; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008422:Materials Testing; D008853:Microscopy; D008875:Middle Aged; D010329:Patella / Q000473:pathology*; D020959:Polyethylene; D013583:Synovial Membrane / Q000473:pathology*
D020099:Coated Materials, Biocompatible; D020959:Polyethylene