Leg, Ankle, Foot Anatomy

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Last updated: May 15, 2026

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First submitted	May 11, 2026
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Hint	Answer
Hindfoot (2)	Talus
Hindfoot	Calcaneus
Midfoot (5)	Navicular
Midfoot	Medial cuneiform
Midfoot	Intermediate cuneiform
Midfoot	Lateral cuneiform
Midfoot	Cuboid
Forefoot (3)	Metatarsals
Forefoot	Phalanges
Forefoot	Sesamoid bones

Syndesmosis/ Fibrous joints of leg	Distal tibiofibular joint
Syndesmosis / Fibrous joints of leg	Interosseous membrane
Plane synovial joint of leg	Proximal tibiofibular joint
Ankle Joint type	Hinge synovial joint

Lateral Ligaments (3)	Anterior talofibular ligament (ATFL)
Lateral Ligaments	Posterior talofibular ligament (PTFL)
Lateral Ligaments	Calcaneofibular ligament (CFL)

Medial Ligament	Deltoid ligament
Where do 4 parts of the medial ligament attach to?	Talus, calcaneus, navicular bones
Anterior + Posterior ligaments	Anterior and posterior tibiofibular

Types of Foot Joints (4)	Intertarsal
Foot Joints	Tarsometatarsal
Foot Joints	Metatarsophalangeal
Foot Joints	Interphalangeal

Type of Intertarsal Joint and movement it allows	Subtalar, inversion and eversion
Type of Intertarsal Joint and movement it allows	Talocalcaneonavicular (TCN) - ball and socket, gliding and rotation
Type of Intertarsal Joint and movement it allows	Calcaneocuboid, inversion and eversion

Arches of foot	medial longitudinal, lateral longitudinal, transverse
Function of foot arches	shock absorption, springs, flexibility, dynamic and passive support
Pes planus	loss of longitudinal arch
Pes Cavus and consequence	High medial longitudinal arch, reduced shock absorption

Leg muscles Posterior compartment (7) Superficial layer (3)	Gastrocnemius, soleus, plantaris
Triceps Surae	Gastrocnemius, soleus
Leg muscles Posterior compartment (7) Deep layer (4)	Popliteus
Deep layer	Tibialis Posterior
Deep layer	Flexor digitorum longus
Deep layer	Flexor hallucis longus

Hint	Answer
Posterior compartment nerve	Tibial nerve

Leg muscles Anterior Compartment (4)	Tibialis Anterior
Ant. Compartment	Extensor digitorum longus
Ant. Compartment	Extensor hallucis longus
Ant. Compartment	Fibularis / peroneus tertius
Anterior compartment nerve	Deep fibular nerve

Leg Muscles Lateral Compartment (2)	Fibularis longus, fibularis brevis
Lateral compartment nerve	Superficial fibular nerve

Deep/Crural Fascia of the leg (continuous with fascia lata) (4) - post/ant	Interosseous membrane
Deep/Crural Fascia - ant/lat	Anterior intermuscular septum
Deep/Crural Fascia - post/lat	Posterior intermuscular septum
Deep/Crural Fascia - sup/deep post	Transverse intermuscular septum
Ankle Retinacula	fibular retinaculum, flexor retinaculum

Tarsal Tunnel Contents (TDAVNH) ant to post	Tibialis posterior
Tarsal Tunnel Contents	Flexor Digitorum longus
Tarsal Tunnel Contents	Posterior Tibial Artery
Tarsal Tunnel Contents	Posterior Tibial Vein
Tarsal Tunnel Contents	Tibial Nerve
Tarsal Tunnel Contents	Flexor Hallucis Longus
What forms the roof of the tunnel	Flexor retinaculum

Popliteal Fossa Contents (PVTC)	Poplitieal artery, vein, tibial nerve, common fibular nerve

Leg arteries (4), origin and branches	Popliteal, femoral, geniculate arteries
Leg arteries	Posterior tibial, Popliteal, fibular artery and medial and lateral planter arteries
Leg arteries	Fibular, posterior tibial, perforating branches to lateral compartment
Leg arteries	Anterior Tibial, Popliteal, perforating branches to lateral compartment, dorsalis pedis

Ankle + Foot Arteries	Dorsalis pedis, medial planter, lateral plantar
Dorsalis Pedis branches	Arcuate, deep plantar, dorsal metatarsal, dorsal digital
Medial Planter branches	Superficial, deep

Medial planter nerve innervation	Motor to abductor hallucis, flexor hallucis brevis, flexor digitorum brevis, 1st lumbrical Cutaneous innervation to medial sole + 3.5 digits
Lateral Planter artery branches	Plantar arch, metatarsal, digital
Tibial nerve path	same as posterior tibial artery, after tunnel splits into medial and lateral plantar
Lateral Planter Nerve Innervation	Motor to intrinsic foot muscles, Cutaneous innervation to lateral sole and later 1.5 digits
Where does common fibular nerve divide and into what	Neck of fibula, superficial fibula, deep fibular
Other Cutaneous Nerves	Sural
Cutaneous Nerves	Medial Sural (tibial)
Cutaneous Nerves	Sural Communicating Branch (common fibular)
Cutaneous Nerves	Saphenous nerve (femoral)