1. 4/12/2012
The leg
Dr. Rania Sherif
Lecturer of Anatomy, Mansoura university
Dorsiflexion Planter flexion
Inversion Eversion Extension Flexion
Sciatic Nerve
Sciatic nerve
Medial popliteal n Lateral popliteal n
Or Or
Tibial n Common peroneal n
Deep peroneal n Superficial peroneal n
Posterior tibial n Or Or
Flexion Extension
Anterior tibial n Musculcutaneous n
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2. 4/12/2012
Deep peroneal n
Dorsiflexion of foot (extension)
Inversion except 1 (subtalar joint)
Ant 4
Superficial peroneal n Extensor
Anterior Group Planter-flexion
Eversion
Post 7 Med
Lat
Flexor
Tibial n (4)
Posterior tibial n (4)
Planter-flexion of foot (flexion)
Inversion
3 fibula (ant 1 tibia (lat
surface) surface) Tibialis
anterior
Extensor digitorum
longus (3/4) Tibialis
anterior
Extensor Extensor
hallucis longus digitorum
(2/4) longus
Peroneus tertius (1/4)
Extensor
hallucis longus
Peroneus
tertius
Extensor digitorum longus Tibialis anterior
Origin: Origin:
Ant surface of fibula (upper ¾) Lat surface of tibia (upper ½ )
Insertion: Insertion:
Divide into 4 tendons Medial cuneiform bone
Bases of Middle & distal phalanx Base of 1st metatarsal bone
of lateral 4 toes (extensor
expansion) NS: deep peroneal n
NS: deep peroneal n
Action: Action:
Dorsiflexion of foot Dorsiflexion
Inversion of foot Inversion
Extension to all joints of lateral 4
toes
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3. 4/12/2012
Peroneus tertius Extensor hallucis longus
Origin: Origin:
Ant surface of fibula (lower ¼ ) Ant surface of fibula (middle
Insertion: 2/4)
Dorsal surface of base of 5th Insertion:
metatarsal Base of Distal phalanx of big
NS: deep peroneal n toe
Action: NS: deep peroneal n
Dorsiflexion of foot Action:
Eversion of foot Dorsiflexion of foot
Inversion of foot
Extension to all joints of big toe
Peroneus
longus
Peroneus
Lateral Group
brevis
Peroneus brevis Peroneus longus
Origin:
Origin: Lat surface of fibula (upper
Lat surface of fibula (lower 2/3) 2/3)
Insertion: Lat surface of head of fibula
Base of 5th metatarsal bone
NS: superficial peroneal n Pass in groove on undersurface
Action: of cuboid bone
Planter-flexion of foot Insertion:
Eversion of foot Medial cuneiform bone
Base of 1st metatarsal bone
NS: superficial peroneal n
Action:
Planter-flexion of foot
Eversion of foot
Mentain arches of the foot
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4. 4/12/2012
Gastrocnemius
Plantaris
Posterior Group
Tendocalcaneus
Achilles Tendon
Gastrocnemius Popliteus
Origin:
Medial head:popliteal surface above
medial condyle
Lateral head: above lateral epicondyle
Insertion: Flexor
Tendocalcaneus
digitorum Tibialis
Middle of post surface of calcaneus
longus posterior
NS: medial popliteal n (tibial n)
Action:
Planterflexion
Flexion of knee joint
Plantaris Soleus
Origin:
Origin: Back of Head of fibula
Popliteal surface above lateral Posterior surface of fibula
condyle Tendenous arch
Insertion: Soleal line
Tendocalcaneus Medial border of tibia
Or Middle of post surface of Insertion:
calcaneus Tendocalcaneus
Middle of post surface of calcaneus
NS: medial popliteal n (tibial n) NS: (tibial) + post tibial n
Action:
Action: Planterflexion
Planterflexion Propelling force in walking
Fexion of knee Steady leg on ground
Help venous return from LL
4

5. 4/12/2012
Popliteus
Origin:
Groove below lat epicondyle
Insertion:
Back of tibia above soleal line
Flexor digitorum Flexor hallucis NS: med politeal n (tibial n)
longus longus
Action:
Unlocking of knee
Tibialis posterior
Flexor hallucis longus Flexor digitorum longus
Origin: Origin:
Post surface of fibula lateral to Post surface of tibia medial to
medial crest vertical line
Insertion: Insertion:
Terminal phalanx of big toe Terminal phalanx of lateral 4 toes
NS: posterior tibial n NS: posterior tibial n
Action: Action:
Planterflexion Planterflexion
Inversion Inversion
Flexion of all joints of big toe Flexion of all joints of lat 4 toes
Maintain arches of foot Maintain arches of foot
Tibialis posterior
Origin:
Post surface of fibula medial to
medial crest
Interosseus membrane
Post surface of tibial lateral to
Tibial vessels vertical line
Insertion:
Tuberosity of navicular bone
All tarsal except talus
2nd, 3rd, 4th, metatarsals
NS: posterior tibial n
Action:
Planterflexion
Inversion
Maintain arches of foot
5

6. 4/12/2012
Femoral artery
Popliteal artery
Retinacula
Anterior tibial Posterior tibial
artery artery
Post compart. of leg
Ant compart. of leg
Dorsalis pedis artery Planter arteries
Superior extensor retinaculum
Superior peroneal retinaculum Inferior extensor retinaculum
Inferior peroneal retinaculum
Tom Tibialis anterior
Has Extensor Hallucis Longus
Peroneus longus & brevis ms Very Anterior tibial vessles
Nice Anterior Tibial nerve
Dog Extensor digitorum longus
&
Peroneus Terieus
Pig
Flexor Retinaculum
Tom Tibialis posterior
Does Flexor Digitorum Longus
Very Posterior tibial vessles
Nice Posterior Tibial nerve
Flexor Hallucis longus
Homework
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