Patellar resurfacing is a surgical procedure to replace the joint surface of the patella.

The undersurface of the patella is removed and a polyethylene button cemented in to replace it.
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FORUM DISCUSSIONS
Patellar resurfacing scheduled 30th July info pls???
Who has had a Patella Femoral replacement?
Post op on hemicap patellofemoral resurfacing
CLINICAL PUBLICATIONS
The controversy of patellar resurfacing in total knee arthroplasty: Ibisne in medio tutissimus? Schindler OS. Knee Surg Sports Traumatol Arthrosc. 2012 Jul; 20(7): 1227–1244.
Patellar resurfacing complications in total knee arthroplasty. Panni AS, Cerciello S, Del Regno C, Felici A and Vasso M. Int Orthop. 2014 Feb; 38(2): 313–317.