title: Personality, function and satisfaction in patients undergoing total hip or knee replacement.
abstract: BACKGROUND
  The aim of this study was to investigate the relationships between personality and joint-specific function, general physical and general mental health in patients undergoing total hip (THA) and knee arthroplasty (TKA).
  
  
  METHODS
  One hundred and eighty-four patients undergoing THA and 205 undergoing TKA were assessed using the Eysneck Personality Questionnaire, brief version (EPQ-BV). General physical and mental health was measured using the Short-Form 12 (SF-12) questionnaire and the EuroQol (EQ-5D). Joint-specific function was measured using the Oxford hip or knee score.
  
  
  RESULTS
  The "unstable introvert" personality type was associated with poorer pre-operative function and health in patients with hip arthrosis. In patients with knee arthrosis, there was poorer general health in those with "stable extrovert" and "unstable introvert" types. Personality was not an independent predictor of outcome following TKA or THA. The main predictor was pre-operative function and health. Comorbidity was an important covariate of both pre-operative and postoperative function.
  
  
  CONCLUSIONS
  Personality may play a role in the interaction of these disease processes with function and health perception. It may also affect the response and interpretation of psychometric and patient-reported outcome measures. It may be important to characterise and identify these traits in potential arthroplasty patients as it may help deliver targeted education and management to improve outcomes in certain groups.
authors.affiliation: College of Medicine and Veterinary Medicine, University of Edinburgh, Little France, Edinburgh, UK. Electronic address: rishi.ramaesh@gmail.com.
authors.forename: Rishikesan
authors.initials: R
authors.lastname: Ramaesh
authors.affiliation: Department of Orthopaedics, Royal Infirmary of Edinburgh, Edinburgh, UK.
authors.forename: Paul
authors.initials: P
authors.lastname: Jenkins
authors.affiliation: Department of Orthopaedics, Royal Infirmary of Edinburgh, Edinburgh, UK.
authors.forename: Deborah
authors.initials: D
authors.lastname: Macdonald
authors.affiliation: Department of Orthopaedics, Royal Infirmary of Edinburgh, Edinburgh, UK.
authors.forename: Colin
authors.initials: C
authors.lastname: Howie
authors.affiliation: Department of Orthopaedics, Royal Infirmary of Edinburgh, Edinburgh, UK; School of Health Sciences, Queen Margaret University, Edinburgh, UK.
authors.forename: Judith V
authors.initials: JV
authors.lastname: Lane
authors.affiliation: Department of Orthopaedics, Royal Infirmary of Edinburgh, Edinburgh, UK; School of Health Sciences, Queen Margaret University, Edinburgh, UK.
authors.forename: Sara
authors.initials: S
authors.lastname: Knight
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology* / Q000601:surgery; D008297:Male; D020370:Osteoarthritis, Knee / Q000503:physiopathology / Q000523:psychology / Q000601:surgery*; D017060:Patient Satisfaction; D010551:Personality; D057234:Preoperative Period; D016059:Range of Motion, Articular / Q000502:physiology*; D012189:Retrospective Studies; D011795:Surveys and Questionnaires