Femoral remodeling after porous-coated total hip arthroplasty with and without hydroxyapatite-tricalcium phosphate coating: a prospective randomized trial.
We prospectively assessed femoral bone remodeling using dual-energy x-ray absorptiometry for 2 years after total hip arthroplasty. Thirty-nine hips were randomized to receive a titanium proximally porous-coated femoral component with or without hydroxyapatite-tricalcium phosphate coating. Although both stems resulted in alterations in the periprosthetic bone mineral density, the hydroxyapatite-tricalcium phosphate coated stems had significantly less femoral bone loss than the uncoated stems at 2-year follow-up. This reduced femoral bone loss may provide short-term and long-term advantages over noncoated stems.
Tanzer
M
M
Division of Orthopaedic Surgery, McGill University, Montreal, Quebec, Canada.
Kantor
S
S
Rosenthall
L
L
Bobyn
J D
JD
D015502:Absorptiometry, Photon; D000704:Analysis of Variance; D019644:Arthroplasty, Replacement, Hip; D015519:Bone Density; D016723:Bone Remodeling / Q000502:physiology*; D002130:Calcium Phosphates; D020099:Coated Materials, Biocompatible; D017886:Durapatite; D005269:Femur / Q000502:physiology*; D006622:Hip Prosthesis; D006801:Humans; D011446:Prospective Studies; D011474:Prosthesis Design; D014025:Titanium; D016896:Treatment Outcome
D002130:Calcium Phosphates; D020099:Coated Materials, Biocompatible; C485817:beta-tricalcium phosphate; D017886:Durapatite; D014025:Titanium; C018392:tricalcium phosphate