title: A longitudinal study of quality of life and functional status in total hip and total knee replacement patients.
abstract: BACKGROUND
  Primary total hip and primary total knee surgeries are commonly performed to improve patients' quality of life and functional status.
  
  
  OBJECTIVE
  This longitudinal retrospective study (N = 851) examined self-reported quality of life and functional status over the preoperative and postoperative periods: 12 months prior to surgery, one month prior to surgery and 12 months following surgery.
  
  
  METHODS
  A linear mixed effects model was used to analyze the changes in quality of life and functional status over the sampling period.
  
  
  RESULTS
  Patients in the convenience sample reported improvements in quality of life and functional status utilizing the SF-12 and Oxford Hip and Oxford Knee, although differences were noted by procedure and gender. Total hip patients tended to demonstrate greater improvement than total knee patients and males reported higher levels of physical and mental quality of life as well as functional status when compared to females. Of particular note was that mental health scores were consistently lower in both total hip and total knee replacement patients across the perioperative period and up to one year postoperative.
  
  
  CONCLUSIONS
  This study identifies an opportunity for health care providers to proactively address the mental health of total hip and total knee replacement patients throughout their joint replacement trajectory.
authors.affiliation: Rehabilitation Geriatrics Program, St. Boniface Hospital, 409 Taché Avenue, Winnipeg, Manitoba, Canada, R2H 2A6. Electronic address: lmandzuk@sbgh.mb.ca.
authors.forename: Lynda L
authors.initials: LL
authors.lastname: Mandzuk
authors.affiliation: College of Nursing, Faculty of Health Sciences, Helen Glass Centre, University of Manitoba, Winnipeg, Manitoba, Canada, R3T 2N2.
authors.forename: Diana E
authors.initials: DE
authors.lastname: McMillan
authors.affiliation: Concordia Joint Replacement Group, Department of Surgery, University of Manitoba, 1155 Concordia Avenue, Winnipeg, Manitoba, Canada, R2K 2M4.
authors.forename: Eric R
authors.initials: ER
authors.lastname: Bohm
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000523:psychology*; D019645:Arthroplasty, Replacement, Knee / Q000523:psychology*; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D011184:Postoperative Period; D057234:Preoperative Period; D011788:Quality of Life; D020127:Recovery of Function; D012189:Retrospective Studies; D012307:Risk Factors; D057566:Self Report; D013997:Time Factors; D016896:Treatment Outcome; D055815:Young Adult
keywords: Functional status; Quality of life; Total hip arthroplasty; Total knee arthroplasty