title: 10-year results of a new low-monomer cement: follow-up of a randomized RSA study.
abstract: OBJECTIVE
  The properties and performance of a new low-monomer cement were examined in this prospective randomized, controlled RSA study. 5-year data have already been published, showing no statistically significant differences compared to controls. In the present paper we present the 10-year results.
  
  
  METHODS
  44 patients were originally randomized to receive total hip replacement with a Lubinus SPII titanium-aluminum-vanadium stem cemented either with the new Cemex Rx bone cement or with control bone cement, Palacos R. Patients were examined using RSA, Harris hip score, and conventional radiographs.
  
  
  RESULTS
  At 10 years, 33 hips could be evaluated clinically and 30 hips could be evaluated with RSA (16 Cemex and 14 Palacos). 9 patients had died and 4 patients were too old or infirm to be investigated. Except for 1 hip that was revised for infection after less than 5 years, no further hips were revised before the 10-year follow-up. There were no statistically significant clinical differences between the groups. The Cemex cement had magnitudes of migration similar to or sometimes lower than those of Palacos cement. In both groups, most hips showed extensive radiolucent lines, probably due to the use of titanium alloy stems.
  
  
  CONCLUSIONS
  At 10 years, the Cemex bone cement tested performed just as well as the control (Palacos bone cement).
authors.affiliation: Institution of Surgery and Perioperative Sciences and Department of Orthopedics, Umeå University, Umeå, Sweden. per.soderlund@orthop.umu.se
authors.forename: Per
authors.initials: P
authors.lastname: Söderlund
authors.forename: Jon
authors.initials: J
authors.lastname: Dahl
authors.forename: Stephan
authors.initials: S
authors.lastname: Röhrl
authors.forename: Bo
authors.initials: B
authors.lastname: Nivbrant
authors.forename: Kjell G
authors.initials: KG
authors.lastname: Nilsson
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000379:methods*; D001843:Bone Cements / Q000737:chemistry* / Q000627:therapeutic use; D016001:Confidence Intervals; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011474:Prosthesis Design; D011475:Prosthesis Failure; D016059:Range of Motion, Articular / Q000502:physiology; D018570:Risk Assessment; D018709:Statistics, Nonparametric; D013548:Sweden; D013997:Time Factors; D014025:Titanium; D016896:Treatment Outcome
chemical_list: D001843:Bone Cements; D014025:Titanium