 Metallic biomaterials have been developed as a way to replace or repair damaged bone and soft tissue. These materials can be used in joint replacements, dental implants, orthopedic fixations, and stents. However, these materials often cause complications such as inflammation, mechanical instability, necrosis, and infection. To address these issues, researchers have developed various methods to modify the surfaces and bulk of metallic biomaterials. Surface modifications include coating with hydroxyapatite, titanium dioxide, and polyethylene glycol, while bulk modifications include porous structures, nanostructures, and additive manufacturing. These modifications aim to increase biocompatibility, mechanical strength, and flexibility of metallic biomaterials. Additionally, researchers are exploring new ways to use 3D printing technology to create customized metallic biomaterials. This article was authored by Karthika Prasad, Ulbazaka, Mingchua, and others.