title: Variation in orthopedic surgeons' perceptions of the indications for and outcomes of knee replacement.
abstract: OBJECTIVE
  To determine the agreement among orthopedic surgeons' indications for knee replacement, their perceptions of the usefulness of various treatments for osteoarthritis of the knee and their expected outcomes of knee replacement, and to determine the relation between these opinions and the number of knee replacement procedures performed by individual surgeons.
  
  
  METHODS
  Survey.
  
  
  METHODS
  Ontario.
  
  
  METHODS
  All 392 orthopedic surgeons in the province. Of the 325 practising traceable surgeons 234 (72.0%) responded.
  
  
  METHODS
  Indications for knee replacement, perceived usefulness of treatments for osteoarthritis, perceived outcomes of knee replacement and number of knee replacement procedures performed by individual surgeons.
  
  
  RESULTS
  The respondents disagreed on how 20 of 34 patient characteristics affected their decision to perform knee replacement surgery. They also disagreed on the usefulness of seven of eight treatments for arthritis of the knee. The respondents demonstrated variation in their expected outcomes of knee replacement. The surgeons who performed more procedures judged, on average, the outcomes to be better and to have fewer complications than the surgeons who performed fewer procedures.
  
  
  CONCLUSIONS
  Orthopedic surgeons demonstrated disagreement about some of the indications for knee replacement, the usefulness of treatments for arthritis of the knee and the perceived outcomes of knee replacement. The areas of greatest disagreement should be the focus of future research and the development of practice guidelines.
authors.affiliation: Division of Clinical Epidemiology, Hospital for Sick Children, Toronto, Ont.
authors.forename: J G
authors.initials: JG
authors.lastname: Wright
authors.forename: P
authors.initials: P
authors.lastname: Coyte
authors.forename: G
authors.initials: G
authors.lastname: Hawker
authors.forename: C
authors.initials: C
authors.lastname: Bombardier
authors.forename: D
authors.initials: D
authors.lastname: Cooke
authors.forename: D
authors.initials: D
authors.lastname: Heck
authors.forename: R
authors.initials: R
authors.lastname: Dittus
authors.forename: D
authors.initials: D
authors.lastname: Freund
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D009864:Ontario; D009985:Orthopedics; D010003:Osteoarthritis / Q000601:surgery / Q000628:therapy; D010027:Osteotomy; D011379:Prognosis; D011788:Quality of Life; D011795:Surveys and Questionnaires; D000074402:Synovectomy; D016896:Treatment Outcome