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abductor hallucisfirst plantar layer intrinsic foot muscle
origin flexor retinaculum and medial calcaneal tuberosity
insertion into the plantar medial area of hallux proximal phalanx
nerve supply medial plantar nerve
action deviation of hallux at the first metatarsophalangeal joint toward the midline/sagittal plane of the body (away from the midline of the foot); it tends to function as a hallux auxiliary plantarflexor in cases with hallux abductovalgus