Functional Materials and Advanced Manufacturing

Biomaterials 175

they do not have even fair mechanical properties, where tensile strength, brittleness,

fracture toughness and resistance to wear are concerned. Thus, the HA coatings on

metallic implants forms a macro-composite material that can be used for clinical

applications, which combines of strength of metallic substrate and compatibility of

HA. Such composite provides natural xation of insert to bone and reduces adverse

effect due to release of metallic ions. Furthermore, HA coatings have been reported

to promote early bone formation around implants and promote the deposition and

differentiation of mesenchymal cells into osteoblasts on HA-coated implant surface

(Cleries et al., 2000). Ability to osteoblast adhesion onto the sur ...