Leg Muscles - Lat

Question 1

List the muscles

Answer 1

• Fibularis longus

- Fibularis tertius

Question 2

Innervation + supply

Answer 2

• superficial fibular n. L5, S1, S2

- post tibial a.

Question 3

Fibularis longus: Origin, Insertion, Functions

Answer 3

Origin: up. lat fibular surface, fibula head + sometimes lat tibial condyle
Insertion: undersurface lat + distal end med cuneiform + MT 1 base
Functions:
- eversion + plantar flexion
- support arches
- tendon through sole allows one leg standing

Question 4

Fibularis Brevis: Origin, Insertion, Function

Answer 4

Origin: lower 2/3 lat shaft of fibula
Insertion: MT V tubercle 
Functions: 
 - eversion of foot 
- act against transverse plantar arch

Question 5

What allows them to evert the foot

Answer 5

Bc they’re behind the lat malleolus