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The Abductor Hallucis is an intrinsic muscle of the foot located in Plantar Layer I. The muscles located in Plantar Layer I are:
- Abductor hallucis
- Abductor digiti minimi pedis
- Flexor digitorum brevis
ATTACHMENTS:
- Calcaneus to the big toe (toe #1).
- The proximal attachment is onto the tuberosity of the calcaneus.
- The distal attachment is onto the medial side of the base of the proximal phalanx of the big toe
ACTIONS:
- Abducts the big toe at the metatarsophalangeal joint.
- Flexes the big toe at the metatarsophalangeal joint.
NOTES:
- The abductor hallucis also has attachments into the plantar fascia of the foot.
- Strengthening the abductor hallucis in clients who have hallux valgus (a bunion) is important.