Electrode placement (use the bar electrode)
Stimulate 4-5cm proximal to E1
- E1 (black): Extensor indicis proprius (EIP) muscle (about 2-3 finger widths proximal to the ulnar styloid process on dorsal forearm)
- E2 (red): Distally along the distal forearm
- Ground: Dorsum of forearm (between stimulation and pickup sites)
Stimulation sites
- Four sites
- Forearm
- (-) Cathode (black): 4-5-cm proximal to E1 over the lateral (with the hand pronated) ulna.
- (+) Anode (red): proximal (in line with the radial nerve)
- Elbow
- (-) Cathode (black): Between the brachioradialis and biceps tendons
- (+) Anode (red): proximal (in line with the radial nerve)
- Below spiral groove
Between the brachioradialis and biceps tendons
- (-) Cathode (black): Lower 1/3 of posterolateral humerus
- (+) Anode (red): proximal (in line with the radial nerve)
- Above spiral groove
- (-) Cathode (black): Upper 1/3 of posterior humerus
- (+) Anode (red): proximal (in line with the radial nerve)
- Forearm
Additional Information
- Type of stimulation = Orthodromic
- CPT codes for nerve conduction studies
- 95900 Nerve conduction, amplitude and latency/velocity study, each nerve; motor, without F-wave study
- 95903 Nerve conduction, amplitude and latency/velocity study, each nerve; motor with F-wave study
1/3 of the way up the posterolateral humerus
- 95904 Nerve conduction, amplitude and latency/velocity study, each nerve; motor with F-wave study, each nerve; sensory
- 95934 H-reflex, amplitude and latency study; record gastrocnemius/soleus muscle
- 95936 Record muscle other than gastrocnemius/soleus muscle
Upper 1/3 of posterior humerus
