title: Palamed G compared with Palacos R with gentamicin in Charnley total hip replacement. A randomised, radiostereometric study of 60 HIPS.
abstract: We performed a randomised, radiostereometric study comparing two different bone cements, one of which has been sparsely clinically documented. Randomisation of 60 total hip replacements (57 patients) into two groups of 30 was undertaken. All the patients were operated on using a cemented Charnley total hip replacement, the only difference between groups being the bone cement used to secure the femoral component. The two cements used were Palamed G and Palacos R with gentamicin. The patients were followed up with repeated clinical and radiostereometric examinations for two years to assess the micromovement of the femoral component and the clinical outcome. The mean subsidence was 0.18 mm and 0.21 mm, and the mean internal rotation was 1.7 degrees and 2.0 degrees at two years for the Palamed G and Palacos R with gentamicin bone cements, respectively. We found no statistically significant differences between the groups. Micromovement occurred between the femoral component and the cement, while the cement mantle was stable inside the bone. The Harris hip score improved from a mean of 38 points (14 to 54) and 36 (10 to 57) pre-operatively to a mean of 92 (77 to 100) and 91 (63 to 100) at two years in the Palamed G and Palacos R groups, respectively. No differences were found between the groups. Both bone cements provided good initial fixation of the femoral component and good clinical results at two years.
authors.affiliation: Department of Orthopaedic Surgery, Haukeland University Hospital, University of Bergen, 5021 Bergen, Norway. geir.hallan@helse-bergen.no
authors.forename: G
authors.initials: G
authors.lastname: Hallan
authors.forename: A
authors.initials: A
authors.lastname: Aamodt
authors.forename: O
authors.initials: O
authors.lastname: Furnes
authors.forename: A
authors.initials: A
authors.lastname: Skredderstuen
authors.forename: K
authors.initials: K
authors.lastname: Haugan
authors.forename: L I
authors.initials: LI
authors.lastname: Havelin
mesh_terms: D000368:Aged; D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D001843:Bone Cements / Q000627:therapeutic use*; D005260:Female; D005269:Femur / Q000502:physiology; D005839:Gentamicins / Q000627:therapeutic use*; D006621:Hip Joint / Q000503:physiopathology / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D009068:Movement; D019904:Polymethyl Methacrylate / Q000627:therapeutic use*; D011868:Radioisotopes; D012399:Rotation; D013635:Tantalum; D016896:Treatment Outcome
chemical_list: D000900:Anti-Bacterial Agents; D001843:Bone Cements; D005839:Gentamicins; D011868:Radioisotopes; D013635:Tantalum; D019904:Polymethyl Methacrylate