Abductor hallucis (muscle)

[TA] muscle of third layer of plantar muscles; origin, medial process of calcaneal tuberosity, flexor retinaculum, and plantar aponeurosis; insertion, medial side of proximal phalanx of great toe; action, abducts great toe; nerve supply, medial plantar. SYN: musculus abductor hallucis [TA], abductor muscle of great toe.