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Journal of Bone and Joint Surgery - British Volume, Vol 71-B, Issue 2, 213-216
Copyright © 1989 by British Editorial Society of Bone and Joint Surgery

Articles

The effect of hydroxyapatite coating on bone growth into porous titanium alloy implants

H Oonishi, M Yamamoto, H Ishimaru, E Tsuji, S Kushitani, M Aono, and Y Ukon

Department of Orthopaedic Surgery, Osaka-Minami National Hospital, Japan.

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.




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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General