Question

To test for sciatica, where will the electrodes be placed?

(a) From the shoulder to elbow

(b) From lower back to a knee

(c) From elbow to wrist

(d) From knee to ankle

I had been asked this question in exam.

I want to ask this question from Nerve Conduction Velocity in section Diagnostic Investigation in Neurology and Cardiology of Clinical Science

Answer 1

Right option is (b) From lower back to a knee

Easiest explanation: The sciatic nerve begins from the lower back and then moves down to the legs. Sciatica is a condition where the person feels pain originating from their lower back and going down to the legs. Since the pain originates from the lower back, placing the electrodes from the lower back to the knee should give an initial assessment. Depending on the extent of the pain, the second electrode may be placed below the knee.