| Project/Area Number |
62570677
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Orthopaedic surgery
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| Research Institution | Tokyo Medical and Dental University |
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Principal Investigator |
OKUMURA Shinji Department of Orthopaedic Surgery, Tokyo Medical and Dental University, 医学部, 助手 (70134682)
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| Co-Investigator(Kenkyū-buntansha) |
HASEGAWA Seiichiro Department of Orthopaedic Surgery, Tokyo Medical and Dental University;, 医学部, 医員 (00237968)
AOKI Hideki Division of Inorganic Material, Institute for Medical and Dental Engineering, To, 医用器材研究所, 助教授 (80014166)
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| Project Period (FY) |
1987 – 1988
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| Project Status |
Completed (Fiscal Year 1988)
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| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1988: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1987: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Keywords | Hydroxy apatte Coating / Plansma-Jet Spray Mehtod / 熱分解法 / コーティング / プラズマ溶射法 / セメントレス人工関節 |
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| Research Abstract |
In the present study, HA coated SUS 316L stainless steel was implanted in canine femur under load-bearing conditions. The implant-bone interface regions were assessed histologically. The intramedullary rod surfaces of SUS 316L stainless steel implants were coated with HA by palsma spraying techniques. The dogs were sacrificed at 1, 3, and 12 months after implantation.
Histological sections revealed that the tips of the HA coated implants were in directly contact with dense bony trabecula without any fibrous tissue at 3 and 12 months. While, it was found that HA layer was partially removed in the twelve-month section.
On the other hand, the HA coated implant in the osteotomized end of the canine femur was surrounded with thick fibrous tissue at 12 months.
Pare titanium and HA coated TI by a new Technique Theremal decomposition method were implanted in canine. The mechamical strength of the implant-bone interface was analysed. The strength of HA coated Ti-bone interface was stroger than that ofti-bone interface.
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