The objective of the proposed study is to concentrate on making use of polymer-reinforced nanocomposites, which have achieved previously challenging levels of success in recent years and are now utilized in all facets of daily life, including biomedical applications, as a result of their enhanced mechanical, thermal, and biological properties. This review paper investigates the potential of polymer-reinforced nanocomposites for biomedical applications by concentrating on their biological properties, characterization, and synthesis. These materials continue to be significant, as evidenced by the growing demand for biodegradable and lightweight substitutes for conventional metals utilized in biomedical applications, especially orthopedic implants. The incorporation of nanoparticles such as graphene-silver nanoparticles leads to the fabrication of multifunctional composites that have improved mechanical, electrical, and antibacterial characteristics upon their incorporation. For the purpose of acquiring the features of these nanocomposites, researchers have reported contemporary techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD), and ultraviolet–visible spectroscopy (UV–visible spectroscopy).