Application of Vanadium-Free Titanium Alloys to Artificial Hip Joints

• Maehara Katsuhiko

  Medical Implants & Materials Department, Kobe Steel, Ltd.

• Doi Kenji

  Medical Implants & Materials Department, Kobe Steel, Ltd.

• Matsushita Tomiharu

  Medical Implants & Materials Department, Kobe Steel, Ltd.

• Sasaki Yoshio

  Medical Implants & Materials Department, Kobe Steel, Ltd.

抄録

The application of titanium and its alloys to surgical implants has created much interest recently. Ti–6Al–4V has been used for numerous applications that require high mechanical properties, however this alloy contains vanadium, which has been proven to be cytotoxic. Two types of vanadium-free titanium alloys were developed and applied to artificial hip joints. As for the cemented type, Ti–15Mo–5Zr–3Al alloy was adopted because of its high fatigue strength, and its low elastic modulus, which approaches bone elasticity. As for the non-cemented type, Ti–6Al–2Nb–1Ta–0.8Mo alloy was adopted because of its less decrease of fatigue strength through heat treatments up to 1270 K, which is necessary to create the porous surface to activate the reaction between the implant and the bone. In addition, new coatings and bioactive methods were applied to the newly developed non-cemented type of prostheses. These hip joints are now successfully being used with excellent clinical results.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 43 (12), 2936-2942, 2002

  公益社団法人 日本金属学会

キーワード

• titanium alloys
• vanadium-free
• surgical implants
• cytotoxicity
• fatigue strength

詳細情報

• CRID: 1390001204245552896
• NII論文ID: 10012328580
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.43.2936
• COI: 1:CAS:528:DC%2BD3sXhtF2nurs%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 6394888
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6394888
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/43/12/43_12_2936/_pdf
• 本文言語コード: en
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