Journal
KNEE
Volume 17, Issue 5, Pages 362-364Publisher
ELSEVIER
DOI: 10.1016/j.knee.2009.10.006
Keywords
Knee; Patellofemoral arthroplasty; Total knee arthroplasty; Low contact stress; Metal backed
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The Low Contact Stress Patellofemoral Arthroplasty (LCS PFA) is a newer design belonging to the second generation of inlay type implants, addressing the problems encountered in the first generation models (Lubinus & Richard's) The cemented mobile bearing metal backed patellar component in this system is modular; allowing interchangeable usage with either the trochlear component in a PFA or the femoral component of a total knee arthroplasty, thus obviating the need for patellar revision during conversion of PFA to TKA The younger active patient with a PFA may exert extreme Joint reaction forces on then patellar implant, rendering early loosening of the patellar implant The endurance of this implant with repeated flexion beyond 90 is also a concern We describe a series of three unusual mechanical failures associated with this particular design of metal backed patellat component of the umcompartmental LCS patellofemoral arthroplasty (c) 2009 Elsevier B V All rights reserved
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