abductor hallucis

abductor hallucis

a muscle that forms the medial margin of the foot and contributes to a soft tissue bulge on the medial side of the sole. It abducts and flexes the great toe at the metatarsophalangeal joint and is innervated by the medial plantar branch of the tibial nerve.

abductor hallucis

first 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

References in periodicals archive ?
0 Lat indicates latency; Amp, amplitude; Pk-Pk, peak to peak; EDB, extensor digitorum brevis; AH, abductor hallucis.

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