Power Grasp: Dual Channel Muscle Stimulation

Electrodes used in this video are PALS® Electrodes by Axelgaard Manufacturing. Written instructions for this video:

Electrode placement for power grasp, using dual channel stimulation. The medial condyle and the pisiform bone are marked with X's. The negative electrode of channel one is placed over the ulnar nerve just proximal to the pisiform bone. The positive electrode is connected with a dual leadwire electrode at the mid forearm. The negative electrode of channel two is placed over the extrinsic finger flexors.
The positive electrode for channel two is also connected to the dual leadwire electrode at the mid forearm. The stimulation of channel one results in metacarpal phalangeal flexion. Stimulation of channel two results in distal and proximal interphalangeal flexion. When the two channels are combined a power grasp occurs. This would be graded as a three plus out of five muscle contraction.

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