Asymmetric patella resurfacing in total knee arthroplasty.

M. W. Pagnano, R. T. Trousdale

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


Three hundred consecutive primary, cemented, condylar total knee arthroplasties (TKAs) were reviewed for the presence of asymmetric patella resurfacing using a postoperative Merchant or sunrise patellar radiograph. Twenty-one knees in 14 patients were found to have the patella asymmetrically resurfaced. Asymmetric resurfacing typically involved the inadvertent preferential resurfacing of the lateral facet with underresection of bone from the medial patellar facet. All patients underwent follow-up for a minimum of 5 years, with a mean follow-up of 7.5 years. Of the 21 knees, 3 revisions were required for patellar complications. One patellar component was loose on radiographs and there was marked patellofemoral pain in 6 knees. Overall, 11 of 21 knees (52%) underwent revision or were recommended for revision for patellar complications or had anterior knee pain that limited activities. Inadvertent asymmetric patella resurfacing using the kinematic condylar implant adversely affects the outcome after TKA.

Original languageEnglish (US)
Pages (from-to)228-233
Number of pages6
JournalThe American journal of knee surgery
Issue number4
StatePublished - 2000

ASJC Scopus subject areas

  • General Medicine


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