What is the role of functional electrical stimulation (FES) in neuromuscular rehabilitation?

• A. To substitute all voluntary muscle activation
• B. To deliver electrical stimulation to the brain
• C. To facilitate purposeful movement like knee extension during gait or grasping
• D. To improve sensation

Answer: (C)

Functional electrical stimulation is used to evoke targeted muscle contractions at the right moment so a person can perform functional tasks. In neuromuscular rehab, its job is to supplement the patient’s movement, not replace all voluntary control. By delivering stimulation that produces a purposeful contraction during a task—like extending the knee during walking or aiding a grasp—FES helps the limb complete a movement that the patient cannot reliably generate on their own. This supports functional performance, promotes motor learning, and can improve gait pattern or hand use.

It’s not about stimulating the brain or improving sensation, and it’s not meant to substitute all voluntary activation. Instead, it acts as an assistive tool that works with the patient’s existing control to enable functional activities and retraining.