## 1 Introduction  
Metallic biomaterials have proven their importance in the biomedical field, where they have been used in orthopedic implants like hip implants. They have helped increase the longevity of traditional hip implants since they strengthen the fixation of the implant into the human bone [1]. The necessary properties for these biomaterials comprise ease of manufacturing, mechanical and chemical stability, and biocompatibility. Researchers have found many candidates for these biomaterials, such as titanium-aluminum-vanadium alloy Ti6 Al4V, cobalt-chromium alloy CoCr, and stainless steel, due to their suitable properties like corrosion resistance and superior strength, especially when applied to hip implant stems [2, 3]. With the help of additive manufacturing (AM) methods, the use of latticed metallic biomaterials has increased over the past few years. Two 3D-printing methods that are famous for their use in the fabrication of metallic biomaterials are selective laser melting (SLM) and direct metal laser sintering (DMLS). These methods have given the freedom to manufacture any complex latticed design since they can easily 3D-print them with good precision once the 3D CAD model is created [4; 5; 6]. DMLS was used in [7] to 3D-print various types of lattice structures to help assess the elastic module by using an axial compression strength test. The main reason for applying lattice structures is to reduce implant stiffness and get as close as possible to human bone stiffness, which helps avoid the stress shielding phenomenon that happens when most of the load exerted on the human body goes to the stronger joint, the implant in this case, causing the bone around the implant to degrade over time due to decreasing usage [8; 9; 10; 11]. On the other hand, lattice structures provide another important feature by making the implant's structure porous, which creates a bone-like structure, allowing the increment in the ingrowth of the bone into the implant body, thus supporting the implant fixation [12; 13; 14]. [PERSON] et al. [15] provided a comprehensive review of the mechanical requirements needed for the osseointegration process. The finite element method FEM has been used as a method of verification to build a valid preconception about implant design and preliminarily measure mechanical properties in pursuit of saving the time and cost of having to manufacture a certain design and then test it to find out how suitable it will be. [PERSON] et al. [16] used FEM to apply topology optimization using bioinspired lattice structures to a hip implant. The study optimized the weight and shape of the implant without compromising the mechanical properties needed in an implant. [PERSON] et al. [17] utilized FEM as a validation method to analyze the compressive behavior of various lattice structures. The research helped evaluate the mechanical properties of unit cells and their effects on medical implants. [PERSON] et al. [18] performed simulation on Gyroid and Voronoi lattice structures to reduce a hip implant's weight and increase the porosity. The study successfully achieved a topologically optimized design while preserving the necessary mechanical properties. [PERSON] et al. [19] demonstrated the effectiveness of a new method for optimizing lattice structures and enhancing mechanical properties. The study used FEM and experimental testing to validate the improvement. All the above-mentioned studies utilized FEM simulation software in their research to validate, optimize, and predict the mechanical properties of a certain design for an implant. Yet, since the main goal of the research was to give a valid preview of how the resulting implant design would be in terms of its reactions against real-life loads, a simulation process that was not time-consuming was needed. [PERSON] et al. [20] used ANSYS software to simulate and estimate the stiffness and natural frequency of various lattice structures.