title: The Journey patellofemoral joint arthroplasty: A minimum 5year follow-up study.
abstract: BACKGROUND
  The Journey patellofemoral joint arthroplasty (PFA) was designed to improve patient outcomes following surgical management of patellofemoral joint osteoarthritis. It is based on the asymmetric trochlear geometry of the Genesis II total knee arthroplasty, with Oxinium components, to provide a reliable treatment option in an often young, high demand group of patients.
  
  
  METHODS
  We report the minimum five year functional outcome and survivorship of the Journey PFA performed at our institution between October 2005 and September 2009.
  
  
  RESULTS
  A total of 101 Journey PFAs were implanted in 83 patients, and we have complete outcomes for 90 implants (89%). There were 80 implants in female patients, and the mean age at time of surgery was 60years (26 to 86). The median Oxford Knee Score (0 to 48) improved from 18 to 30, and median Western Ontario and McMaster University Osteoarthritis Short Form Index (0 to 60) improved from 22 to 35. There were a total of 12 revisions, with mean time to revision 50months (10 to 99).
  
  
  CONCLUSIONS
  The Journey PFA gives a good medium-term functional outcome with 88% survivorship at a mean of seven years. This is the largest study of Journey PFA in the literature, and it provides a reliable option for patients with isolated patellofemoral joint osteoarthritis when arthroplasty is considered.
authors.affiliation: Avon Orthopaedic Centre, Southmead Hospital, Bristol BS10 5NB, UK. Electronic address: nahearn@nhs.net.
authors.forename: Nathanael
authors.initials: N
authors.lastname: Ahearn
authors.affiliation: Avon Orthopaedic Centre, Southmead Hospital, Bristol BS10 5NB, UK.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Metcalfe
authors.affiliation: Avon Orthopaedic Centre, Southmead Hospital, Bristol BS10 5NB, UK.
authors.forename: Mohammed A
authors.initials: MA
authors.lastname: Hassaballa
authors.affiliation: Avon Orthopaedic Centre, Southmead Hospital, Bristol BS10 5NB, UK.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Porteous
authors.affiliation: Avon Orthopaedic Centre, Southmead Hospital, Bristol BS10 5NB, UK.
authors.forename: James R
authors.initials: JR
authors.lastname: Robinson
authors.affiliation: Avon Orthopaedic Centre, Southmead Hospital, Bristol BS10 5NB, UK.
authors.forename: James R
authors.initials: JR
authors.lastname: Murray
authors.affiliation: Avon Orthopaedic Centre, Southmead Hospital, Bristol BS10 5NB, UK.
authors.forename: John H
authors.initials: JH
authors.lastname: Newman
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D057071:Patellofemoral Joint / Q000601:surgery*; D000071066:Patient Reported Outcome Measures; D011475:Prosthesis Failure; D016059:Range of Motion, Articular; D012189:Retrospective Studies
keywords: Arthroplasty; Journey; Patellofemoral joint; Patient reported outcomes; Survivorship