title: Neither pre-operative education or a minimally invasive procedure have any influence on the recovery time after total hip replacement.
abstract: OBJECTIVE
  The purpose of this study was to evaluate pre-operative education versus no education and mini-invasive surgery versus standard surgery to reach complete independence.
  
  
  METHODS
  We conducted a four-arm randomized controlled trial of 209 patients. The primary outcome criterion was the time to reach complete functional independence. Secondary outcomes included the operative time, the estimated total blood loss, the pain level, the dose of morphine, and the time to discharge.
  
  
  RESULTS
  There was no significant effect of either education (HR: 1.1; P = 0.77) or mini-invasive surgery (HR: 1.0; 95 %; P = 0.96) on the time to reach complete independence. The mini-invasive surgery group significantly reduced the total estimated blood loss (P = 0.0035) and decreased the dose of morphine necessary for titration in the recovery (P = 0.035).
  
  
  CONCLUSIONS
  Neither pre-operative education nor mini-invasive surgery reduces the time to reach complete functional independence. Mini-invasive surgery significantly reduces blood loss and the need for morphine consumption.
authors.affiliation: Service de chirurgie orthopédique; Hôpital Cochin, Assistance-Publique Hôpitaux de Paris, 27 rue du Faubourg Saint-Jacques, 75014, Paris, France, david.biau@cch.aphp.fr.
authors.forename: David Jean
authors.initials: DJ
authors.lastname: Biau
authors.forename: Raphael
authors.initials: R
authors.lastname: Porcher
authors.forename: Alexandra
authors.initials: A
authors.lastname: Roren
authors.forename: Antoine
authors.initials: A
authors.lastname: Babinet
authors.forename: Nadia
authors.initials: N
authors.lastname: Rosencher
authors.forename: Sylvie
authors.initials: S
authors.lastname: Chevret
authors.forename: Serge
authors.initials: S
authors.lastname: Poiraudeau
authors.forename: Philippe
authors.initials: P
authors.lastname: Anract
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000379:methods / Q000534:rehabilitation; D016063:Blood Loss, Surgical; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures; D010353:Patient Education as Topic; D020127:Recovery of Function; D013997:Time Factors; D016896:Treatment Outcome