Muscle Name: abductor hallucis brevis

AKA:  musculus abductor hallucis

Abbreviation: AHB

Spinal Nerve Roots:
    S1
    S2
Plexus:
    lumbosacral plexus

Named Nerves:
    medial plantar nerve

    tibial nerve

    sciatic nerve

Proximal Attachment:  Tuberosity of the calcaneus

Distal Attachment:  Medial aspect of base of 1st phalanx of hallux

Action: Abducts the great toe and minimal flexion of the metacarpophalangeal joint

Needle Insertion: In the medial aspect of the foot approximately 1 cm below the navicular bone, midway between the calcaneus and the metatarsalphalangeal joint.

Activation for EMG:  Have the patient spread their toes.

Pitfalls: 

Notes: