Enhancing Sensory Feedback in Prosthetics: Current Innovations and Future Directions

With the development of society and culture, people are more and more inclusive and concerned about disabled groups, and the problems and limitations faced by disabled people when wearing artificial limbs are gradually being paid attention to. The absence of sensory feedback in contemporary prosthetics constitutes a fundamental issue, significantly contributing to the reluctance of many individuals with disabilities to utilize these devices. This article summarizes the primary methods to enhance the sensation of prosthetics in the current stage. Current research methods are divided into 3 types: mechanical and electronic sensors, neural interface technology (invasive and non-invasive), and biomimetic materials. These approaches can provide sensory feedback to prosthetic users to some extent. Although temperature sensing in electromechanical sensors is not widely used, this technology can significantly enhance the experience and sense of happiness of prosthetic limb users. Moreover, existing studies have shown that bionic skin can successfully restore some amputees' sense of touch and tingling. However, all current technologies are facing particular challenges and still have excellent future development prospects.