Porous-surfaced metallic implants for orthopedic applications.

R M Pilliar
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Abstract

The fixation of orthopedic implants in bone by tissue ingrowth presents a possible solution to the problem of long-term implant loosening. To achieve this objective, metallic implants formed with porous surface coatings have been developed. This article reviews the methods proposed for fabricating such implants. Some possible problems related to loss of mechanical properties due to the processing to form the porous surface zone are described. For some of the porous-surfaced implant systems, processes have been developed to avoid the occurrence of such changes. It is particularly important at this stage of the evaluation of porous-surfaced implants in clinical situations that manufacturers are fully cognizant of the effects of processing on mechanical properties of these devices.

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骨科用多孔表面金属植入物。
通过组织向内生长固定骨科植入物为解决长期植入物松动问题提供了一种可能的解决方案。为了实现这一目标,已经开发出具有多孔表面涂层的金属植入物。本文综述了制备此类植入物的方法。描述了由于形成多孔表面区域的加工而导致的机械性能损失的一些可能的问题。对于一些多孔表面的植入系统,已经开发了一些工艺来避免这种变化的发生。在临床评估多孔表面植入物的这个阶段,制造商充分认识到加工对这些设备机械性能的影响是特别重要的。
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