Role of Patellofemoral Offset in Total Knee Arthroplasty




Total knee arthroplasty occasionally does not meet expectations. This randomized clinical trial assessed the effect of restoration of the native patellofemoral height on clinical outcomes. Group I underwent standard patellar bone resection; group II underwent modified patellar bone resection that adjusted the amount of anterior condylar bone removed and the anterior flange thickness. There were no differences in anterior knee pain, Western Ontario and McMaster Universities Arthritis Index scores, or Knee Injury and Osteoarthritis Outcome Score scores. Patellofemoral compartment height restoration versus patellar height alone does not appear to significantly reduce pain or improve function.




  • •

    Overall, patellofemoral compartment height restoration versus patellar height alone does not seem to significantly reduce pain or improve function following TKA.




  • •

    Overall, patellofemoral compartment height restoration versus patellar height alone does not seem to significantly reduce pain or improve function following TKA.




  • 2.

    Does restoration of native overall patellofemoral height improve function following primary TKA?




    • Statistical Analysis


    Statistical analyses were all performed using SAS software, version 9.2 (Cary, NC, USA). Univariate, descriptive statistics were calculated and included frequency, proportions, means, and standard deviations. Bivariate analyses were performed using a student t-test and chi-square test. A student t-test was used to determine differences in mean values between groups for the following variables: subject age, patellar height, patellofemoral height, anterior knee pain VAS, KOOS subscores, and WOMAC subscores. A chi-square test was used to determine the difference in the proportions between men and women. An a priori 0.05 level of significance was used for all statistical tests.




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    Feb 23, 2017 | Posted by in ORTHOPEDIC | Comments Off on Role of Patellofemoral Offset in Total Knee Arthroplasty

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