Which nerve motor point is located 2 inches below the elbow joint on the top of the forearm?

Which nerve motor point is located 2 inches below the elbow joint on the top of the forearm?

• A. Median nerve motor point
• B. Common peroneal nerve motor point
• C. Radial nerve motor point
• D. Suprascapular nerve motor point

Answer: (C)

The idea being tested is where to place a nerve motor point for effective stimulation of a specific nerve’s muscles. For the radial nerve, the motor point in the forearm is found on the top (dorsal) surface, about two inches below the elbow, in the region over the extensor muscles (roughly near the brachioradialis/extensor compartment). This location is where the radial nerve’s motor fibers innervate the forearm and hand extensors, so stimulating here reliably triggers extension movements. Other nerves have motor points in different areas: the median nerve motor point is on the anterior forearm over the flexor muscles, the common peroneal nerve motor point is around the knee/leg region, and the suprascapular nerve motor point is near the shoulder. The described position matches the radial nerve motor point.

The idea being tested is where to place a nerve motor point for effective stimulation of a specific nerve’s muscles. For the radial nerve, the motor point in the forearm is found on the top (dorsal) surface, about two inches below the elbow, in the region over the extensor muscles (roughly near the brachioradialis/extensor compartment). This location is where the radial nerve’s motor fibers innervate the forearm and hand extensors, so stimulating here reliably triggers extension movements.

Other nerves have motor points in different areas: the median nerve motor point is on the anterior forearm over the flexor muscles, the common peroneal nerve motor point is around the knee/leg region, and the suprascapular nerve motor point is near the shoulder. The described position matches the radial nerve motor point.