Origin:  S1-S2 roots, sacral plexus, sciatic nerve, tibial nerve

Recording Site:  Abductor Digiti Quinti Pedis muscle (ADQP)

Reference Site:  Top of foot below 5th toe

Ground:  Top of foot

Stimulation Site:  Ankle

Procedure:  The recording electrode is placed over the belly of the ADQP.  The reference electrode is placed over the proximal phalanx of the 5th toe.  Stimulation occurs in the hollow on the medial side of the ankle between the medial malleolus and the Achilles tendon.  Additional stimulation sites include the back of the knee, directly under the knee cap in the fat pad located above the knee crease.