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

• A. Improved cosmesis
• B. Harness required for operation
• C. Decreased grip force
• D. Narrow functional envelope

Answer: (A)

A key benefit of a myoelectric prosthesis is improved cosmesis. Because control relies on electrical signals from residual muscles and does not require a visible harness or cables, the device can resemble a natural hand in appearance and allow clothing to fit more normally. This aesthetic and social benefit often makes wearers feel more comfortable and confident using the prosthesis. In contrast, needing a harness is a limitation of body-powered devices, not an advantage of myoelectric; grip force with myoelectric systems is not inherently reduced and can even be strong, and the functional reach is typically broader rather than narrower, making those options less accurate as advantages.