leg Flashcards
What are the attachments, nerve supply and actions of Tibialis Anterior (ant compartment)
O ⇒ Lateral surface of shaft of Tibia and interosseous membrane
I ⇒ Medial sruface of medial cuneiform and base of first metatarsal
N ⇒ Deep peroneal nerve
A ⇒ Dorsiflexion of the foot at ankle joint. Inverts foot and supports medial longitudinal arch
What are the attachments, nerve supply and actions of Extensor hallucis longus (ant compartment)
O ⇒ Anteromedial surface of the fibular shaft
I ⇒ Base of distal phalanx of big toe
N ⇒ Deep peroneal N.
A ⇒ Extends big toe. Dorsiflexion of foot.
What are the attachments, nerve supply and actions of Extensor digitorum longus (ant compartment)
O ⇒ Proximal part of the anteriomedial surface of fibula
I ⇒ Via the extensor expansion into the bsaes of the distal and middle phalanges of lateral four toes
N ⇒ Deep peroneal N.
A ⇒ Dorisflexion of foot, extension of lateral 4 toes
What are the attachments, nerve supply and actions of Peroneus Tertius (ant compartment)
O ⇒ Distal part of the anteriomedial surface of fibular shaft
I ⇒ Dorsal surface of base of 5th metatarsal bone
N ⇒ Deep peroneal N.
A ⇒ Dorsiflexes foot and eversion of foot
What are the attachments, nerve supply and actions of Gastrocnemius
O ⇒ Medial head, postetrior surface of distal femur, superior to medial epicondyle. Lateral head, upper posterolateral surface of lateral femoral condyle
I ⇒ Via the calcaneal tendon to the posterior surface of the calcaneus
N ⇒ Tibial N.
A ⇒ Plantarflexes the foot and flexes the knee
- increases speed of walking
What are the attachments, nerve supply and actions of Plantaris
O ⇒ Lateral supracondylar line of the femur and oblique popliteal ligament of knee
I ⇒ Via the calcaneal tendon to posterior surface of calcaneus
N ⇒ Tibial N.
A ⇒ Plantarflexes the foot and flexes the knee
What are the attachments, nerve supply and actions of Soleus
O ⇒ Posterior aspect of fibular head, neck and proximal shaft. Soleal line, medial border of tibia. Tendinous arch b/w tibial and fibular attachments
I ⇒ Calcaneal tendon to posterior surface of calcaneus
N ⇒ Tibial N.
A ⇒ Plantarflexes foot
- overcomes inertia by initiating walking
-has venous sinus
What are the attachments, nerve supply and actions of Popliteus
O ⇒ Lateral femoral condyle
I ⇒ Posterior surface of the proximal tibia, above the soleal line
N ⇒ Tibial N.
A ⇒ Unlocks the knee joint. Laterally rotates the femur on fixed tibia
What are the attachments, nerve supply and actions of Flexor hallucis longus
O ⇒ Postreior surface of fubla, and adjacent interosseus membrane
I ⇒ Plantar surface of distal phalanx of great toe
N ⇒ Tibial N.
A ⇒ Flexes the great toe
What are the attachments, nerve supply and actions of Flexor digitorum longus
O ⇒ Medial side of the posterior surface of tibia below the soleal line
I ⇒ Plantar surfaces of bases of distal phalanges of the lateral four toues
N ⇒ Tibial N.
A ⇒ Flexes the lateral four toes
What are the attachments, nerve supply and actions of Tibialis posterior
O ⇒ Posterior surfaces of the interosseous membrane and adjacent region of medial cuneiform
I ⇒ Mainly to the tuberosity of the navicular and adjacent region of medial cuneiform
N ⇒ Tibial N.
A ⇒ Inversion and planterflexion of foot. Support of medial arch of foot during walking.
What are the attachments, nerve supply and actions of Peroneus Fibularis Longus (lat compartment)
O ⇒ head and sup 2/3 of lateral surface tibia
I → base of 1st metatarsal,medial cuneiform
N ⇒ Superficial peroneal nerve
A ⇒ weak Plantar flexion of foot. Eversion of foot. SUpports lateral longitudinal and transverse plantar arch
What are the attachments, nerve supply and actions of Peroneus brevis(lat compartment)
O ⇒ Lower two thirds of lateral surface of shaft of fibula
I ⇒ Lateral Tubercle at the base of the 5th metatarsal bone
N ⇒ Superficial peroneal N.
A ⇒weak Plantar flexion of foot. Eversion of foot.
