Supination: Option 1
Electrode Placement
Application Instruction by Dr. Lucinda Baker
Supination electrode placement, option one. The lateral epicondyle is marked with the X. The small negative electrode is placed very proximal. A large positive electrode is placed on the upper arm.
Supination: Option 1
Video Instruction
Audio Transcript:
Supination electrode placement, option one. The lateral epicondyle is marked with the X. The small negative electrode is placed very proximal. A large positive electrode is placed on the upper arm. Stimulation of this electrode configuration results in forearm supination, along with elbow extension, some wrist extension, and finger extension.
The supinated contraction would be graded as three out of five.
Supination: Option 1
Muscle Anatomy
Muscles involved in supination:
Supinator
Origin: Lateral epicondyle of humerus, supinator crest of ulna, radial collateral ligament, annular ligament
Insertion: Lateral proximal radial shaft
Supination: Option 1
Nerve Anatomy
Nerve involved in supination:
Supinator
Nerve innervation: Deep branch of the radial nerve
Nerve root: primarily C6, some C5
