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Layers of the Foot (1st layer (superficial layer) (Flexor digitorium…
Layers of the Foot
1st layer (superficial layer)
Flexor digitorium brevis
Forms 4 tendons that inserts onto middle phalanges
Function:
Flexes the lateral 4 digits
Innervation:
Medial Plantar N.
Abductor Hallucis
Function:
Flexes and Abducts at 1st MTP joint
Innervation
Medial Plantar N.
Abductor Digiti Minimi
Function:
Abducts little toes at MTP joint
Innervation:
Lateral Plantar N.
3rd Layer (associated with little toe and big toe)
Flexor Digiti Minimi Brevis
Intervention:
Lateral Plantar N
Action:
Flexes little toe
Adductor Hallucis
Transverse and Oblique Head
Innervation
Lateral Plantar N.
Action:
Adducts the great toe at MTP joint
Flexor Hallucis Brevis
Innervation:
Medial Plantar N
Action:
Flex the big toe at the MTP joint
2nd Layer (Deep Layer)
Quadratus Plantae (medial and lateral head)
Inserts onto flexor digitorum longus tendon
Innervation:
Lateral Plantar N.
Lumbricals
Flexor Digitorum Longus
Lumbrical muscles arise from the side of this tendon
Function:
Flex MTP joint while extending the interphalangeal joints
Innervation
Medial Plantar N.
1st Lumbrical = 2nd toe
Lateral Plantar N.
Toes 3-5
Flexor Hallicus Longus
.
4th Layer (PAD DAB)
Plantar Interossei
Action:
Adduction digits 3-5
Innervation:
Lateral Planter N.
Unipennate: they insert onto one side of the metatarsals
Dorsal Interossei
Action:
Abduction digits 2-4
Bipennate: They are on both sides of the metatarsals
Innervation:
Lateral Plantar N.
Deep Fibular N
First 2 digits