A new cementless total hip arthroplasty with bioactive titanium porous-coating by alkaline and heat treatment: average 4.8-year results

Journal of Biomedical Materials Research. Part B, Applied Biomaterials
Keiichi KawanabeTadami Matsumoto

Abstract

A method has been developed for creating a bioactive coating on titanium by alkaline and heat treatment, and shown that it forms a thin layer of hydroxyapatite (HA) on the surface of implants when soaked in simulated body fluid. A series of 70 cementless primary total hip arthroplasties using this coating technique on a porous titanium surface was performed, and followed up the patients for a mean period of 4.8 years. There were no instances of loosening or revision, or formation of a reactive line on the porous coating. Although radiography just after operation showed a gap between the host bone and the socket in over 70% of cases, all the gaps disappeared within a year, indicating the good osteoconduction provided by the coating. Alkaline-heat treatment of titanium to provide a thin HA coating has several advantages over plasma-spraying, including no degeneration or absorption of the HA coating, simplicity of the manufacturing process, and cost effectiveness. In addition, this method allows homogeneous deposition of bone-like apatite within a porous implant. Although this was a relatively short-term study, treatment that creates a bioactive surface on titanium and titanium alloy implants has considerable promise for clinical ...Continue Reading

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Citations

Mar 4, 2011·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Shunsuke FujibayashiTakashi Nakamura
Dec 29, 2010·Journal of Materials Science. Materials in Medicine·Deepak K PattanayakTadashi Kokubo
Jun 15, 2011·Journal of Materials Science. Materials in Medicine·Deepak K PattanayakTadashi Kokubo
Feb 22, 2012·Journal of Materials Science. Materials in Medicine·Seiji YamaguchiTadashi Kokubo
Sep 6, 2012·Journal of Materials Science. Materials in Medicine·Toshiyuki KawaiTadashi Kokubo
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Sep 22, 2020·Journal of Biomaterials Applications·Yaichiro OkuzuShuichi Matsuda

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