title: Periprosthetic bone remodeling using a triple-taper polished cemented stem in total hip arthroplasty.
abstract: The triple-taper cemented femoral stem was developed to promote proximal femoral and calcar loading to minimize periprosthetic bone loss and aseptic loosening. Periprosthetic changes in bone mineral density in Gruen zones 1 to 7 were analyzed in 103 patients over a 2-year period using dual x-ray absorptiometry. There was a statistically significant decrease in bone mineral density in all Gruen zones, but was most marked in zones 1 and 7. Periprosthetic bone density was reduced significantly in the first 3 to 9 months, after which recovery of bone density occurred. Greater calcar bone loss was seen in women, patients with a low preoperative bone density, and patients with poor postoperative mobility. Age at surgery did not effect calcar bone loss.
authors.affiliation: Department of Orthopaedics, St. Vincent's Hospital Melbourne, University of Melbourne Department of Surgery, Victoria, Australia.
authors.forename: Aaron J
authors.initials: AJ
authors.lastname: Buckland
authors.forename: Michelle M
authors.initials: MM
authors.lastname: Dowsey
authors.forename: James D
authors.initials: JD
authors.lastname: Stoney
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Hardidge
authors.forename: Kong Wah
authors.initials: KW
authors.lastname: Ng
authors.forename: Peter F M
authors.initials: PF
authors.lastname: Choong
mesh_terms: D015502:Absorptiometry, Photon; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000379:methods; D001843:Bone Cements; D015519:Bone Density / Q000502:physiology*; D016723:Bone Remodeling / Q000502:physiology*; D001862:Bone Resorption / Q000517:prevention & control; D004867:Equipment Design; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011475:Prosthesis Failure; D012727:Sex Characteristics
chemical_list: D001843:Bone Cements