Le resurfaçage patellaire d’un deuxième côté lors d’une prothèse totale de genou pourrait ne pas être nécessaire même s’il a été effectué du premier côté

Abstract

Introduction: The appropriateness or necessity of patellar resurfacing in total knee arthroplasty (TKA) is not clearly established. The objective of the present study was to compare the clinical and functional results of patients operated on one side by TKA with patellar resurfacing and on the other side by TKA without patellar resurfacing. The hypothesis was that there was no difference in results between the two sides.Method: This was a retrospective cohort of patients operated on by TKA without patellar resurfacing (TKA R-) in a second osteoarthritic knee after contralateral TKA with patellar resurfacing (TKA R+). Twenty consecutive patients who underwent second primary TKA constituted their own control group (40 knees). Iwano scores were comparable. Mean age was 75.9 ± 6.2 years. Mean time between the two procedures was 20.6 ± 11.9 months.Results: There were no differences in SF-36, KOOS or Lillois scores between the right and left knees. Sixty-five percent of patients were unable to differentiate the performance their knees in activities of daily living.Conclusion: The present study did not differentiate results according to patellar resurfacing, showing the limitations of resurfacing on early functional gain after primary TKA. Resurfacing might thus not be essential, even if it was performed in replacement of the first knee.Level of evidence: IV; retrospective cohort study