title: The effect of patient position on blood loss in primary cemented total hip arthroplasty.
abstract: BACKGROUND
  The total blood loss of 101 cemented primary total hip arthroplasties was studied in a prospective randomised study.
  
  
  METHODS
  Fifty of them were implanted in the supine position and 51 in the lateral position. The patients were matched for sex, height, weight and ASA grade. Only one surgeon carried out the operations using the same operative technique and identical prosthesis in both groups.
  
  
  RESULTS
  The intraoperative blood loss associated with the supine position was 1,156 ml (954-1,265 ml) and 1,129 ml (989-1,310 ml) in the lateral position. There was no difference when comparing the two groups (P = 0.41).
  
  
  CONCLUSIONS
  Patient positioning in supine or lateral during total hip arthroplasty surgery has no bearing on the total amount of blood loss.
authors.affiliation: Department of Trauma and Orthopaedics, Floor C, West block, Queens Medical Centre, Nottingham, UK. alistairpace@hotmail.com
authors.forename: Alistair
authors.initials: A
authors.lastname: Pace
authors.forename: Almunir
authors.initials: A
authors.lastname: Yousef
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D016063:Blood Loss, Surgical; D002484:Cementation; D005260:Female; D006801:Humans; D008297:Male; D011187:Posture; D011446:Prospective Studies