Hydroxyapatite porous scaffolds were fabricated for bone tissue engineering by using motor assisted micro-syringe precision extrusion deposition freeform fabrication system.The key process parameters that influence the formation of pores were analyzed.Mechanical property of scaffolds and its influence factors were also studied.By adjusting process parameters,porous scaffolds were fabricated with controlled structure and high connectivity.The scaffolds gained high strength after microwave sintering.The avera...