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As a pioneer in the area of ceramic artificial bones, we were the first in Japan to have developed the alumina femoral head, and have dedicated ourselves to continuously improving its quality since. In recent years, we have succeeded in developing zirconia, the next-generation high-strength bio-material. In 1995, the zirconia femoral head; and in 2001, the zirconia femoral component for total knee replacement were also developed.
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Compressive
strength |
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| The alumina femoral head has been proven to be safe and effective over a long period through several tens-of-thousands of clinical applications. Although they have sufficient strength for clinical use, they should be handled with care considering the specific characteristics of the ceramics material. For this reason, it is important to further improve the strength of the ceramic femoral head. Zirconia heads has been proven to have approximately 1.5 times higher strength than alumina heads. |
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Wear
resistance |
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| The bearing between zirconia ceramics and UHMWPE has proven to be excellent in friction- and wear-resistant characteristics, and reduction of polyethylene wear is expected by adopting zirconia ceramics as the material for femoral components in total knee replacement. Compared with Co-Cr-Mo alloy, zirconia ceramics have proven to further reduce polyethylene wear. |
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Knee simulator |
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