NMES Electrotherapy Practice Test 2026 - Free Electrotherapy Practice Questions and Study Guide

In NMES, you want the electrical current to pass through the muscle you’re trying to strengthen. For wrist extensors, that means targeting the extensor muscles (like ECRL and ECRB) and creating a strong, efficient current path across them. Placing one electrode over the extensor motor points ensures the muscles respond strongly to the stimulation, while placing the other electrode over a proximal motor point or near a tendon provides a good route for the current to travel through the extensor group. This setup promotes a crisp, reliable contraction of the wrist extensors with effective recruitment and manageable comfort.

Placing both electrodes over flexor muscles would recruit the opposite action (wrist flexion) instead of extension. Placing electrodes far from the forearm (e.g., on the elbow and knee) misses the target muscles entirely. Placing both electrodes on the same muscle can lead to poor current distribution and less effective activation. The described arrangement best activates the intended extensors for strengthening.