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.
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
