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Compartments of Lower Leg (Anterior Compartment (Extensor Hallucis Longus,…
Compartments of Lower Leg
Anterior Compartment
Extensor Hallucis Longus
O:Dorsal base of distal phalanx of great toe
N: Deep Fibular . N
Middle part of ant. fibula
A: Extends great toe and dorsiflexes ankle
Extensor Digitorum Longus
I: Middle and distal phalanges of lateral 4 digits
O: Lateral Condyle of tibia and superior 3/4 of medial fibula
N: Deep Fibular
A: Extends lateral four digits. Dorsio flexion at ankle
Tibialis Anterior
I: Medial Cuneiform
N: Deep Fibular N
O: Lateral condyle and superior half of tibia
A: Dorsiflexes ankle and inverts foot
Fibularis Tertius
O: Inf. 1/3 of anterior surface of fibula
I: Dorsum of base of 5th metatarsal
N: Deep Fibular N
Dorsi Flexes ankle and aids in eversion
Lateral compartment
Fibularis Longus
N: Superficial Fibular N
A: Everts foot and weakly plantarflexes ankle
I: Base of 1st metatarsal and medial cuneiform
O: head and sup. 2/3 of lateral fibula
Fibularis Brevis
I: Dorsal surface of tuberosity on lateral side of 5th metatarsal
N: Superfical Fibular N
O: Inferior 2/3 of lateral fibula
A: Everts foot and weakly plantarflexes
Posterior Compartment
Superficial Group
Soleus
O: Soleal line of tibia
I: Calcaneal tendon
N: Tibial
A: Plantarflexes ankle
Plantaris
I: Calcaneal Tendon
N: Tibial
O: lateral supracondylar line and oblique popliteal ligament
A: assists gastroc in plantarflexion
Gastrocnemius
I: calcaneal tendon
N: Tibial
O: LH- lateral condyle of femur MH-medial condyle
A: Plantarflexes ankle or raises heel
Deep Group
Flexor Hallucis Longus
O:Inf. 2/3 of post. fibula
I: Base of distal phalanx of great toe
N: Tibial N
A: flexes great toe at all joints
Flexor digitorum Longus
O: Post. surface of Tibia
I: Base of distal Phalanges lateral four
N: Tibia
A: Flexes lateral four digits
Popliteus
O: Lateral condyle of femur and lateral meniscus
I: post. tibia superior to soleal line
N: Tibial
A: Weak knee flexion and rotation of femur
Tibialis Posterior
I: Tuberosit of navicular, cuneiform, cuboid
N: Tibial
O: Interosseous membrane and post. tibia
A: Plantar flexes ankle and inverts foot