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Binding mechanism of interface of porous coated titanium alloy prostheses

Binding mechanism of interface of porous coated titanium alloy prostheses
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摘要 In the experiment, we inserted the implants coated with TC4 fibers and particles into the bones of dogs.The histological characters of the bone ingrowth and the state of bone remodelling at interface were observed. And then the whole course of the fatigue injuries accumulation at the interface was monitored by scanning electron microscopy equipped with fatigue stage. Experiments show that the collagen fibers of bone interweave in the porosity of implants, which were strengthened by hydroxyapatite crystal. The collagen fibers were bound to the porous layer implant and the binding strength was enhanced by hydroxyapatite crystal. The remodelling state of bone in pores of implant and around the interface play a key role in determining the fatigue strength and the life span of the interface between bone and implant. Therefore, we consider that the interlocking fixation between bone and implant can be more exactly explained as binding mechanism.
出处 《Journal of Medical Colleges of PLA(China)》 CAS 1996年第1期14-17,21,共5页 中国人民解放军军医大学学报(英文版)
关键词 porous-coated PROSTHESES INTERLOCKING FIXATION binding mechanism porous-coated prostheses interlocking fixation binding mechanism
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