A prosthesis is an artificial device designed to replace a missing or impaired body part, aiming to restore function or improve appearance. These devices incorporate advanced material science, ranging from rigid plastics and metals to sophisticated bio-mimetic components, allowing for varying levels of utility. Modern systems can range from simple cosmetic covers to complex, powered limbs that utilize residual musculature or external power sources for movement. The development of prostheses relies on interdisciplinary knowledge, integrating biomechanics, engineering, and medicine to create solutions that interface with the human body, enhancing mobility and quality of life for individuals with physical impairments.