Upper limb Sensory NCS
|
Nerve |
Origin |
Active |
Reference |
Ground |
Stimulation |
Lat Max (Onset) |
Amp. (Min) |
NCV (Min) |
F Lat. (Max) |
|
Median to 2nd, 3rd digits
|
C6,7 |
A ring electrode is placed in the
digit being tested, slightly distal to the base of the digit. |
4 cm distal to active electrode |
Between active & reference
electrode |
A- 14 cm proximal to the active
electrode, slightly medial to the tendon of the flexor carpi radialis. B- Cathode is placed at the
midpoint of the line from the active electrode to stimulation point A |
A:3.2 B:1.8 |
10 |
|
|
|
Median Palmer Cut.
|
C6 |
Halfway between the midpoint of the distal wrist crease
and the 1st MCP joint. |
slightly distal to the 1st MCP joint |
Between active & reference electrode |
8 cm proximal to the active electrode, slightly medial to
the tendon of the flexor carpi radialis. |
1.7 |
10 |
|
|
|
Ulnar to 5th digit
|
C8 |
A ring electrode is placed in the
digit being tested, slightly distal to the base of the digit. |
4 cm distal to active electrode |
Between active & reference
electrode |
A- 14 cm proximal to the active
electrode, slightly radial to the tendon of the flexor carpi ulnaris. B- Cathode is placed at the
midpoint of the line from the active electrode to stimulation point A |
A:3.2 B:1.8 |
6 |
|
|
|
Radial to thumb
|
C6 |
over the radial sensory nerve as the nerve passes over the
extensor pollicis longus tendon |
4 cm distal to active electrode |
Between active & reference electrode |
10 cm proximal to the active electrode on the radial side
of the forearm |
2.2 |
6 |
|
|
