title: Impact of preoperative function on early postoperative outcome after total hip arthroplasty.
abstract: OBJECTIVE
  To investigate the impact of preoperative functional status on early postoperative outcomes after total hip arthroplasty (THA).
  
  
  METHODS
  39 men and 36 women aged 50 to 76 years who underwent cementless THA for osteoarthritis were followed up for at least 2 years. Patients were evaluated pre- and post-operatively (at 6, 12, and 24 months) using the Harris Hip Score (HHS), 36-item Short Form Health Survey (SF-36), and Western Ontario and McMaster University Osteoarthritis Index (WOMAC). Patients were classified into 3 groups based on their preoperative HHS (poor, <45; intermediate, 45-55; good, >55). Differences between and within groups were compared.
  
  
  RESULTS
  Patients with a poor preoperative HHS had worse early postoperative outcomes in terms of HHS, SF-36, and WOMAC. Postoperative pain and function correlated with preoperative HHS, but postoperative range of motion and deformity did not.
  
  
  CONCLUSIONS
  Poor preoperative function may affect recovery unfavourably and lead to prolonged pain. Earlier THA in the course of functional decline may associate with better outcomes.
authors.affiliation: Department of Orthopaedics, University of Rostock, Germany.
authors.forename: Henning R
authors.initials: HR
authors.lastname: Johansson
authors.forename: Philipp
authors.initials: P
authors.lastname: Bergschmidt
authors.forename: Ralf
authors.initials: R
authors.lastname: Skripitz
authors.forename: Susanne
authors.initials: S
authors.lastname: Finze
authors.forename: Rainer
authors.initials: R
authors.lastname: Bader
authors.forename: Wolfram
authors.initials: W
authors.lastname: Mittelmeier
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip; D005260:Female; D005500:Follow-Up Studies; D006306:Health Surveys; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000150:complications / Q000503:physiopathology* / Q000601:surgery*; D011788:Quality of Life; D016059:Range of Motion, Articular; D020127:Recovery of Function; D012307:Risk Factors; D012720:Severity of Illness Index; D013997:Time Factors; D016896:Treatment Outcome