• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>13th International Symposium on Ceramics in Medicine and the Annual Meeting of the International Society for Ceramics in Medicine 22-26 November 2000 Bologna, Italy >HA as a Fixation Agent for Proximal Femoral Prostheses
【24h】

HA as a Fixation Agent for Proximal Femoral Prostheses

机译：HA作为股骨近端假体的固定剂

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Hydroxyaatite has been known to be the mineral component of bone for many years. It is however only in the last 10 to 15 years that, following initial work in dentistry, it has become possible to spray HA coatings onto a metal base in orthopaedic surgery. Clinical implantation began about 10 years ago. It is now known that HA can be attached to cobalt chrome as well as to titanium alloy. It was originally suggested that HA acted as an adhesive and thus that the attachment strength of HA to the underlying metal and the shear and tensile strengths of the HA itself were crucial. It is now thought that HA acts by inducing bone to grow onto its surface and thus to fill recesses in the metal. HA will act in this way to fill gaps as much as 5mm in width and 3mm in depth. Thus recesses machined or electrically etched into metal can be filled by bone ingrowth if they are HA coated thus obviating the need for attaching a porous surface. The advantages of directly-formed recesses are that detachment of the surface, stress risers induced by the attachment process and the additional cost of two surfacing procedures are avoided.
机译：多年以来，羟基磷灰石一直是骨骼的矿物质成分。然而，仅在最近的10至15年中，在牙科领域的最初工作之后，才有可能在骨科手术中将HA涂层喷涂到金属基底上。临床植入始于大约10年前。现已知道，HA可以附着在钴铬以及钛合金上。最初建议使用HA作为粘合剂，因此HA与底层金属的附着强度以及HA本身的剪切和拉伸强度至关重要。现在认为HA通过诱导骨骼生长在其表面上并因此填充金属中的凹陷而起作用。 HA将以这种方式填充宽度为5mm，深度为3mm的间隙。因此，如果将经过机加工或电腐蚀成金属的凹槽进行HA涂覆，则可以通过骨骼向内生长来填充凹槽，从而避免了附着多孔表面的需要。直接形成的凹槽的优点在于避免了表面的分离，由附接过程引起的应力上升以及避免了两次铺面过程的额外成本。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号