Clinically uses of F wave

Clinically uses of F wave

What is the F wave? How is it clinically useful?

The F-wave is a delayed motor potential recorded by stimulating a motor nerve in the distal extremity. As the electrical impulse travels backward along the nerve to the spinal cord, a small population of anterior horn cells is stimulated, resulting in small motor action potentials that can be recorded from the associated muscle. Abnormal F-waves can indicate proximal nerve disease such as radiculopathy or plexopathy. Absent F-waves are also early findings in Guillain–Barré syndrome.

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