Leg Flashcards
What are the three muscle compartments of the leg?
1) posterior
2) anterior
3) lateral
What nerve innervates the posterior muscle compartment of the leg?
tibial branch of sciatic nerve
Is the gastrocnemius deep or superficial?
superficial
What is the general shape of the gastrocnemius?
2 heads (lateral and medial head)
O: gastrocnemius
femoral condyles (or lateral and medial heads)
I: gastrocnemius
tendon (Achilles tendon) to cutaneous
F: gastrocnemius
1) flexion of knee joint
2) plantar flexion
N: gastrocnemius
tibial branch of sciatic nerve
Is the tibialis posterior deep or superficial?
deep
O: Tibialis posterior
tibia, fibula and interosseus membrane between tibia and fibula
I: Tibialis posterior
tendon attaches to all tarsal bones except for talus
F: Tibialis posterior
maintain arch of foot but also helps with plantar flexion
N: Tibialis posterior
tibial branch of sciatic nerve
What are the muscles in posterior muscle compartment of the leg?
1) Gastrocnemius
2) Tibialis posterior
What nerve innervates the anterior muscle compartment of the leg?
Deep fibular nerve (branch of common fibular nerve, which is branch of sciatic nerve)
O: Tibialis anterior
lateral tibial condyle
I: Tibialis anterior
medial cuneiform (one of the bones on the medial border of the foot)
F: Tibialis anterior
1) prime mover for both dorsi flexion
2) inversion of foot
N: Tibialis anterior
deep fibular nerve
What nerve innervates the lateral muscle compartment of the leg?
superficial fibular nerve (branch of common fibular nerve, which is branch of sciatic nerve)
O: Fibularis longus
shaft of fibula
I: Fibularis longus
wraps around lateral border, passes obliquely through plantar of foot and attaches to medial cuneiform
F: Fibularis longus
prime mover for eversion of foot
N: Fibularis longus
superficial fibular nerve
