Which of the following is an advantage of a hybrid prosthesis?

• A. Simultaneous control of elbow and wrist or terminal device
• B. Harness required for elbow operation
• C. Increased overall weight
• D. Decreased grip force

Answer: (A)

The key advantage of a hybrid prosthesis is the ability to control two functions at once, such as the elbow and the wrist or terminal device, rather than having to switch inputs or operate one joint sequentially. This simultaneous control lets you flex the elbow to position the hand while already opening or closing the hand, making tasks smoother, faster, and more natural. In many traditional setups, control is limited to one movement at a time or requires cumbersome mode switching, which can interrupt activity and increase cognitive load. The other options describe downsides—needing a harness for elbow work, added weight, or weaker grip—which are not advantages.