Wrist Flexion

Electrode Placement
Application Instruction by Dr. Lucinda Baker

Electrode placement for isolated wrist flexion. The medial condyle is marked with the X. The negative electrode of the asymmetric waveform is placed relatively high towards the medial condyle. The positive electrode is over the flexor surface of tendons.

Related Electrode Placements

Wrist Flexion

Video Instruction
Audio Transcript:

Electrode placement for isolated wrist flexion. The medial condyle is marked with the X. The negative electrode of the asymmetric waveform is placed relatively high towards the medial condyle. The positive electrode is over the flexor surface of tendons.

During stimulation you see pure wrist flexion without finger flexion. Good balance between radial and ulnar sides. This would be graded as a three out of five muscle contraction.

Wrist Flexion

Muscle Anatomy

Muscles involved in wrist flexion:

Flexor Carpi Radialis
Origin: Medial epicondyle and ulna
Insertion: Attaches to the base of 2nd and 3rd metacarpals
Other actions: Adducts hand

Flexor Carpi Ulnaris
Origin: Medial epicondyle with the other superficial flexors
Insertion: Pisiform
Other actions: Adducts hand

Palmaris Longus
Origin: Medical epicondyle
Insertion: Retinaculum of wrist

Wrist Flexion

Nerve Anatomy

Nerves involved in wrist flexion:

Flexor Carpi Radialis
Nerve innervation: Median nerve
Nerve root: C6, C7

Flexor Carpi Ulnaris
Nerve innervation: Ulnar nerve
Nerve root: C8, T1

Palmaris Longus
Nerve innervation: Median nerve
Nerve root: C7, C8