Periprosthetic bone remodeling using a triple-taper polished cemented stem in total hip arthroplasty.
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.
Buckland
Aaron J
AJ
Department of Orthopaedics, St. Vincent's Hospital Melbourne, University of Melbourne Department of Surgery, Victoria, Australia.
Dowsey
Michelle M
MM
Stoney
James D
JD
Hardidge
Andrew J
AJ
Ng
Kong Wah
KW
Choong
Peter F M
PF
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
D001843:Bone Cements