title: A prospective randomised radiostereometric analysis trial of SmartSet HV and Palacos R bone cements in primary total hip arthroplasty.
abstract: BACKGROUND
  Introduction of new bone cements into clinical practice should include radiostereometric studies.
  
  
  METHODS
  A prospective randomised radiostereometric study was performed, comparing SmartSet HV and Palacos R acrylic bone cements (without antibiotics) using third-generation cementing techniques in primary total hip arthroplasty. Thirty-five patients (36 hips) undergoing Charnley total hip arthroplasty were randomised to receive either of the two cements and were followed with repeated clinical, radiographic and radiostereometric examinations over 24 months. Twenty-seven patients (28 hips) attended 2 years postoperatively.
  
  
  RESULTS
  The mean distal translation observed was -0.15 mm for SmartSet HV and -0.16 mm for Palacos R. The mean rotation around the longitudinal axis was 0.9 degrees for SmartSet HV and 1.2 degrees for Palacos R. The Merle d'Aubigne Postel score was the maximum of 18 points for all patients in both groups.
  
  
  CONCLUSIONS
  No statistically significant difference in stem fixation with use of SmartSet HV and Palacos R was found at 2-year follow-up.
authors.affiliation: Orthopaedic Department, St. Olavs Hospital, Trondheim University Hospital, Norway.
authors.forename: Otto S
authors.initials: OS
authors.lastname: Husby
authors.forename: Kristin
authors.initials: K
authors.lastname: Haugan
authors.forename: Pål
authors.initials: P
authors.lastname: Benum
authors.forename: Olav A
authors.initials: OA
authors.lastname: Foss
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D001696:Biomechanical Phenomena; D001843:Bone Cements / Q000627:therapeutic use*; D005260:Female; D005271:Femur Head Necrosis / Q000000981:diagnostic imaging / Q000601:surgery; D005500:Follow-Up Studies; D006618:Hip Dislocation, Congenital / Q000000981:diagnostic imaging / Q000601:surgery; D025981:Hip Injuries / Q000000981:diagnostic imaging / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000000981:diagnostic imaging / Q000601:surgery*; D019904:Polymethyl Methacrylate / Q000627:therapeutic use*; D011475:Prosthesis Failure; D011859:Radiography; D016896:Treatment Outcome
chemical_list: D001843:Bone Cements; D019904:Polymethyl Methacrylate