Timing and appropriate use of electrodiagnostic studies.

Electrodiagnostic studies are powerful tools used to objectively examine the physiologic status of a nerve. These consist of nerve conduction studies, which directly examine motor and sensory function of the nerve, and electromyography, which examines spontaneous and voluntary motor unit action potentials in the muscle. Together these studies enable characterization, localization, and duration of nerve pathology. Appropriate timing and use of electrodiagnostic studies assist medical providers in treating nerve pathology.