title: [Effect of femoral intramedullary irrigation on periprosthetic cement distribution: jet lavage versus syringe lavage].
abstract: BACKGROUND
  The purpose of this experimental study was to determine quantitatively the cement penetration into periprosthetic femoral bone by Icomparing the use of jet-lavage with the conventional syringe irrigation.
  
  
  METHODS
  10 pairs of fresh-frozen human cadaver femora were used for cemented stem implantation, The left femora were irrigated with a syringe device, the right femora with a jet-lavage system. After implantation, all femora were cut into 5-mm slices from proximal to distal with a diamond saw. The scanned slices were analysed using an image processing system which provided a discrimination between implant, cement, and bone as well as an exact determination of the cement area.
  
  
  RESULTS
  In all 10 femora, a recognizable improvement of the cement penetration into the periprosthetic bone was demonstrated using the jet-lavage. In the proximal part, the mean cement penetration was 8.6% higher in the jet-lavage group than in the syringe device group. An equivalent tendency towards the jet-lavage pretreated femora was seen in the middle part with 8.7% on average mean and in the distal part with 6.4% on average. Also, when subdividing the periprosthetic area into 4 quadrants, a significant improvement of the cement penetration was found with the exception of the ventro-medial region.
  
  
  CONCLUSIONS
  Cement distribution and penetration is improved using the jet-lavage technique for cleaning the medullary canal of the femur. Therefore, the jet-lavage should be used as a standard procedure in clinical cementing techniques.
authors.affiliation: Orthopädische Universitätsklinik der RWTH Aachen. dcwirtz@post.klinikum.rwth-aachen.de
authors.forename: D
authors.initials: D
authors.lastname: Wirtz
authors.forename: R M
authors.initials: RM
authors.lastname: Sellei
authors.forename: F
authors.initials: F
authors.lastname: Portheine
authors.forename: A
authors.initials: A
authors.lastname: Prescher
authors.forename: M
authors.initials: M
authors.lastname: Weber
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D001843:Bone Cements / Q000493:pharmacokinetics*; D004867:Equipment Design; D005269:Femur / Q000473:pathology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D013594:Syringes; D007507:Therapeutic Irrigation / Q000295:instrumentation*
chemical_list: D001843:Bone Cements
vernacular_title: Einfluss der Femurmarkraumspülung auf die periprothetische Zementverteilung: Jet-Lavage versus Spritzenspülung.