LL: Foot Flashcards
Bones of the foot

Sustentaculum Tali
Projection from calcaneus allowing talus placement
Parts of deltoid ligament
4 parts

Lateral ligaments of ankle
3 parts

Structures posterior to medial malleolus/through tarsal tunnel
Tom Dick And Nervous Harry
Tibialis posterior tendon
flexor Digitorum longus
posterior tibial Artery
tibial Nerve
Hallucis longus

Structures posterior to lateral malleolus
Superficial to peroneal retinaculum:
- Sural nerve
- Short saphenous vein
Deep:
- Peroneus longus
Peroneus brevis

Origin and insertion of extensor digitorum brevis
calcaneus to great toe

Innervation of extensor digitorum brevis
Deep fibular nerve
Action of extensor digitorum brevis
Extension of MTP of great toe and toes
Muscles of the sole of the foot
From superficial to deep
4 layers
Most superficial (1st) layer of muscles of sole of the foot
Abductor hallucis
Flexor digitorum brevis
Abductor digiti minimi

Origin and insertion of abductor hallucis
calcaneous to proximal phalanx

Origin and insertion of flexor digitorum brevis
Calcaneus to phalanges of lateral 4 toes

Origin and insertion of abductor digiti minimi
Calcaneus to proximal phalanx of little toe

Innervation of abductor hallucis and flexor digitorum brevis
Medial plantar nerve from tibial nerve
Innervation of abductor digiti minimi
Lateral plantar nerve from tibial nerve
Action of flexor digitorum brevis
Flexes toes at PIP
Second layer of foot muscles
Quadratus plantae
Lumbricals

Origin and insertion of quadratus plantae
Calcaneus to tendon of flexor digitorum longus

Origin and insertion of lumbricals
Tendon of flexor digitorum longus to extensor hoods of toes

Innervation of quadratus plantae
lateral plantar nerve
Innervation of lumbricals
1st- medial plantar nerve of tibial nerve
Rest- lateral plantar nerve of tibial nerve
Action of quadratus plantae
Assists flexor digitorum longus to flex
Action of lumbricals
Flexion of MTP, extension of PIP/DIP
3rd layer of sole of the foot muscles
Flexor hallucis brevis
Adductor hallucis
Flexor digiti minimi brevis

Origin and insertion of flexor hallucis brevis
Cuboid and lateral cuneiform: tendon of tibialis posterior to base of proximal phalanx of great toe

Origin and insertion of flexor digiti minimi brevis
Base of metatarsal 5 to lateral side of proximal phalanx

Innervation of flexor hallucis brevis
medial plantar nerve
Innervation of adductor hallucis and flexor digiti minimi brevis
Lateral plantar nerve
Muscles of 4th layer of sole of foot
Dorsal interossei
Plantar interossei

Origin and insertion of dorsal interossei
Adjacent metatarsals to extensor hoods of proximal phalanges

Origin and insertion of plantar interossei
medial side of metatarsal to extensor hoods
Innervation of interossei muscles
Lateral plantar nerve from tibial nerve
(2nd dorsal interossei innervated by deep fibular nerve)
Function of interossei muscles
PAD DAB
Dorsal abduct
Plantar adduct
Dorsal foot blood supply

Plantar foot blood supply

Foot venous supply

Sole of the foot sensory innervation

Dorsal aspect of foot sensory innervaiton

Ankle reflex spinal route
S1-2
Which foot ligament damaged in inversion injuries
Anterior talofibular ligament
Calcaneofibular ligament

Which foot ligaments are injured in eversion foot injury
Deltoid

Damage to calcaneonavicular ligament
Causes loss of medial longitudinal arch/ flat foot
aka spring ligament
