title: LCS mobile bearing total knee arthroplasty without patellar resurfacing. Does the unresurfaced patella affect outcome? Survivorship at a minimum 10-year follow-up.
abstract: BACKGROUND
  Patellar resurfacing during total knee arthroplasty (TKA) remains controversial. The aim of this study was to evaluate the long-term outcomes of a mobile-bearing TKA without patellar resurfacing.
  
  
  METHODS
  We assessed the outcomes in 503 patients (600 knees) who had cemented LCS (low contact stress) mobile bearing TKA without patellar resurfacing at a minimum follow-up of 10 years. Clinical outcome scores and radiological assessment were used.
  
  
  RESULTS
  Four knees were revised, two had bearing dislocation and nine patients (1.5%) had secondary resurfacing for anterior knee pain. There were no radiolucent lines or osteolytic defects on radiographic evaluation. The overall survivorship was 97.8% with re-operation for any reason as the endpoint.
  
  
  CONCLUSIONS
  Non-resurfacing of the patella does not adversely affect the outcome of the LCS mobile bearing TKA at minimum 10 years follow-up.
authors.affiliation: Outcome Assessment Unit, Musgrave Park Hospital, Belfast, Northern Ireland.
authors.forename: Seamus
authors.initials: S
authors.lastname: O'Brien
authors.forename: David J
authors.initials: DJ
authors.lastname: Spence
authors.forename: Luke O
authors.initials: LO
authors.lastname: Ogonda
authors.forename: David E
authors.initials: DE
authors.lastname: Beverland
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000379:methods; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000000981:diagnostic imaging / Q000601:surgery; D010147:Pain Measurement; D010149:Postoperative Pain / Q000453:epidemiology; D010329:Patella / Q000601:surgery; D011859:Radiography; D016896:Treatment Outcome