What is the primary function of electrical stimulation applied over a muscle's motor point?

The primary function of electrical stimulation applied over a muscle's motor point is to stimulate muscle contraction. When electrical stimulation is applied directly to a motor point, it elicits action potentials in the motor nerves, which in turn cause the muscle fibers to contract. This is particularly useful in various therapeutic contexts where muscle activation is needed, such as in rehabilitation after injury or surgery, to maintain muscle strength, promote muscle re-education, and prevent atrophy during periods of immobilization.

This modality enhances neuromuscular function by providing an external stimulus that can be particularly important for patients who are unable to voluntarily contract their muscles due to pain, muscle weakness, or neurological impairments. While increasing range of motion, reducing muscle atrophy, and improving blood flow are beneficial outcomes associated with muscle contractions and overall treatment, the direct goal of electrical stimulation at the motor point is to trigger muscle contraction specifically.