Short-term outcomes of unresurfaced patellas in total knee arthroplasty

Monti Khatod, Maria C S Inacio, Stefano Bini

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1 Citation (Scopus)


Selective patellar resurfacing continues in total knee arthroplasty (TKA). We define the demographics of patients selected for this procedure and report their short-term, aseptic revision rate. A community-based Total Joint Replacement Registry (TJRR) comprising 39,000 TKAs with median follow-up of 24.5 months was evaluated. Patients who underwent bicompartmental TKA were younger (p < 0.001), suffered posttraumatic arthrosis (p < 0.001), and receive hybrid fixation (p < 0.001). In multivariate analysis, the unresurfaced patella is an independent risk factor for early revision with a relative increased risk of 2.3 (95% CI, 1.4-3.7). The cumulative survivorship at 6 years for tricompartmental TKA is 98.1 versus 93.6% for bicompartmental knees (p < 0.001). Despite selecting patients with presumably healthier patellofemoral joints for bicompartmental TKA, the unresurfaced patella remains a risk factor for early revision.

Original languageEnglish
Pages (from-to)105-8
Number of pages4
JournalJournal of Knee Surgery
Issue number2
Publication statusPublished - Apr 2013


  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Arthroplasty, Replacement, Knee
  • Cohort Studies
  • Female
  • Humans
  • Knee Prosthesis
  • Male
  • Middle Aged
  • Osteoarthritis, Knee
  • Patella
  • Patient Selection
  • Prosthesis Failure
  • Reoperation
  • Risk Factors
  • Time Factors
  • Treatment Outcome
  • Young Adult
  • Journal Article

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