title: The effect of hydroxyapatite coating on bone growth into porous titanium alloy implants.
abstract: In rabbits and goats, test implants with a porous surface of two layers of Tl-6A;-4V beads were examined at intervals for bond strength with bone. Half of the implants were coated with hydroxyapatite by plasma spray. The bonding strength with bone in the coated specimens was about four times greater than that of the uncoated specimens at two weeks, and twice as strong at six weeks. Twelve weeks after implantation, the strengths were similar. The hydroxyapatite coating of the beads provided earlier and stronger fixation.
authors.affiliation: Department of Orthopaedic Surgery, Osaka-Minami National Hospital, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Oonishi
authors.forename: M
authors.initials: M
authors.lastname: Yamamoto
authors.forename: H
authors.initials: H
authors.lastname: Ishimaru
authors.forename: E
authors.initials: E
authors.lastname: Tsuji
authors.forename: S
authors.initials: S
authors.lastname: Kushitani
authors.forename: M
authors.initials: M
authors.lastname: Aono
authors.forename: Y
authors.initials: Y
authors.lastname: Ukon
mesh_terms: D000497:Alloys; D000818:Animals; D001846:Bone Development; D001842:Bone and Bones / Q000648:ultrastructure*; D006041:Goats; D006882:Hydroxyapatites; D008855:Microscopy, Electron, Scanning; D011817:Rabbits; D014025:Titanium
chemical_list: D000497:Alloys; D006882:Hydroxyapatites; C031462:titanium alloy (TiAl6V4); D014025:Titanium