Abstract. In order to improve the stiffness characteristics of orthopedic devices implants that mimic the mechanical behavior of bone need to be considered. With the capability of Additive layer manufacturing processes to produce orthopedic implants with tailored mechanical properties are needed. This paper discusses finite element (FE) analysis and mechanical characterization of porous medical grade cobalt chromium (CoCr) alloy in cubical structures with volume based porosity ranging between 60% to 80% produced using direct metal laser sintering (DMLS) process. ANSYS 14.0 FE modelling software was used to predict the effective elastic modulus of the samples and comparisons were made with the experimental data. The effective mechanical properties of porous samples that were determined by uniaxial compression testing show exponential decreasing trend with the increase in porosity. Finite element model shows good agreement with experimentally obtained stress-strain curve in the elastic regions. The models prove that numerical analysis of actual prosthesis implant can be computed particularly in load bearing condition IntroductionThe major challenge in developing medical implant devices is to produce biocompatible alloys which possess good tensile and fatigue properties. The technique used to manufacture these alloy can markedly affect the mechanical and metallurgical properties of the resulting components [1]. Additive manufacturing (AM) was proposed as a novel candidate for the fabrication of customized biomedical implants with the cobalt alloys. Among them, is direct metal laser sintering (DMLS) which has been a high demand since it offers a lower time-to-market, a near-net-shape production, a higher material utilization rate, along with its ability to produce functional metallic parts with mechanical properties comparable to those in bulk materials [2]. From the previous studies, SLM has the potential of controlling porosities according to the capacity of providing different energy inputs by its processing parameters while in DMLS process all the parameters were constant. A study on cobalt chromium molybdenum (CoCrMo) powder using DMLS shown that minor porosity produced by the highest layer thickness, which provided a better particle packing. Thus thermal conductivity among the particles was enhanced and subsequently permitted successful densification, and finally removed or shrunk pores.Cobalt (Co) in CoCrMo alloys exhibits high corrosion resistance and has excellent wear resistance which makes Co, often employed as artificial joints and body implants. Co also shows stability of allotropic transformation at room and elevated temperatures. In biomedical applications, CoCrMo