What is the recommended method to locate motor points for NMES electrode placement?

• A. Use a high current to quickly identify motor points.
• B. Place electrodes over the muscle belly without stimulation.
• C. Stimulate with a low current and move electrodes to find a site where a strong, visible contraction occurs with the least current.
• D. Use tactile palpation only.

Answer: (C)

Locating motor points for NMES relies on electrically testing small areas of the muscle to find where stimulation produces the strongest contraction with the least current. You stimulate with a low current and gradually move the electrode around the muscle until you find a site that yields a strong, visible contraction at the smallest possible current. This approach minimizes patient discomfort, ensures efficient recruitment of motor units, and avoids guessing based on anatomy alone. Placing electrodes over the muscle belly without stimulation won’t reveal the excitable site, and starting with high current can recruit fibers unpredictably and increase discomfort. In practice, you search with low intensity, identify the site that has the lowest threshold yet produces a robust contraction, and then place the treatment electrodes there.