O & I: Foot Muscles Flashcards
What muscles are in the 1st layer of the sole of the foot?
(1) Abductor Hallucis
(2) Flexor Digitorum Brevis
(3) Abductor Digit Minimi
What muscles are in the 2nd layer of the sole of the foot?
(1) Quadratus Plantae
(2) Lumbricals
What muscles are in the 3rd layer of the sole of the foot?
(1) Flexor Hallucis Brevis
(2) Adductor Hallucis
(3) Flexor Digiti Minimi Brevis
What muscles are in the 4th layer of the sole of the foot?
(1) Plantar Interossei (three muscles)
2) Dorsal interossei (four muscles
What muscles are on the dorsum of the foot?
(1) Extensor Digitorum Brevis
(2) Extensor Hallucis Brevis
Origin: Abductor Hallucis
medial tubercle of calcaneus; flexor retinaculum; plantar aponeurosis
Insertion: Abductor Hallucis
medial side of base of proximal phalanx of 1st digit
Innervation: Abductor Hallucis
medial plantar nerve (S2, S3)
Action: Abductor Hallucis
abducts and flexes 1st digit (great toe, hallux)
Origin: Flexor Digitorum Brevis
medial tubercle of calcaneus; plantar aponeurosis; intermuscular septa
Insertion: Flexor Digitorum Brevis
both sides of middle phalanges of lateral four digits
Innervation: Flexor Digitorum Brevis
medial plantar nerve (S2, S3)
Action: Flexor Digitorum Brevis
flexes lateral four digits
Origin: Abductor Digiti Minimi
medial and lateral tubercles of calcaneus; plantar aponeurosis; intermuscular septa
Insertion: Abductor Digiti Minimi
lateral side of base of proximal phalanx of 5th digit
Innervation: Abductor Digiti Minimi
lateral plantar nerve (S2, S3)
Action: Abductor Digiti Minimi
abducts and flexes little toe (5th digit)
Origin: Quadratus Plantae
Medial surface and lateral margin of plantar surface of calcaneus
Insertion: Quadratus Plantae
Posteriolateral margin of tendon of flexor digitorum longus
Innervation: Quadratus Plantae
Lateral plantar nerve (S2, S3)
Action: Quadratus Plantae
assits flexor digitorum longus in flexing lateral four digits