Prosthetics is a specialty within the field of health care technology concerned with the design, manufacture and application of prostheses. A prosthesis is defined as an “externally applied device used to replace wholly, or in part, an absent or deficient limb segment”.


A transradial prosthesis is an artificial arm that attaches below the elbow. A passive device of the sort serves strictly cosmetic purposes. The opposite is an active prosthesis, which comes in two forms. A cable-operated prosthetic device works using a harness that connects to the affected shoulder and the other arm, allowing the user to control the movement manually. A myoelectric prosthetic implant detects muscle movement in the upper arm via specialized sensors and moves the prosthesis, including opening and closing the hand.


A transhumeral prosthesis is an artificial arm that connects to the body above the elbow but below the shoulder. A transhumeral limb is more complicated than a transradial prosthesis due to a missing elbow, making movement more challenging and complex to compensate for. Transhumeral prosthetic devices can also be active and passive. Most modern active transhumeral prostheses use myoelectric sensors or a combination of sensors and cables to move the artificial limb.


A transtibial prosthesis is an artificial leg below the knee. Since the knee allows for a lot of movement without assistance, the prosthesis’s primary function is to distribute weight accordingly and provide comfort. Patients need to be rehabilitated on walking with a transtibial prosthesis since the artificial foot usually doesn’t move


A transfemoral prosthesis is often the most challenging of the four main types. It replaces a missing leg above the knee. The artificial knee joint is controlled by hip motion, thus heavily influenced by the strength of the residual limb. A transfemoral prosthesis usually allows for seemingly normal movement and function after a lengthy rehabilitation process. A proper socket fit is essential to ensure comfort and stability.