Table 1: Motor and sensory nerve conduction studies of bilateral ulnar nerves. Note the decreased amplitude of the evoked response with stimulation of the ulnar nerve with active electrode over the FDIO compared to the ADM on the right side. Left-sided motor ulnar nerve conduction studies were within normal limits. Velocities were within normal limits and excluded from this data table.

Stimulation Site

Distal Latency (ms)

Amplitude (mV)

Ulnar Motor

Left/Right

 

Wrist to ADM

3.3/3.3

9.2

Below Elbow

6.6/6.9

8.4

Above Elbow

8.3/8.8

9.0

Wrist to FDI

3.4/3.0

10.8/3.2

Ulnar Sensory

Left/Right

 

Wrist to 5th Digit

4.1/3.8

24.5/17.2