Anterior Leg

Question 1

What holds the tendons of the leg muscles in place around the ankle?

Answer 1

superior & inferior extensor retinacula

Question 2

Tibialis Anterior

I:

Answer 2

I: medial cuneiform, base of 1st metatarsal

Question 3

Tibialis Anterior
Inner:
Function:

Answer 3

Innerv: deep fibular n.

Function:

1. extension of toes 2-5
2. dorsiflexion of ankle

Question 4

Extensor Digitorum Longus
Inner:
Function:

Answer 4

Innerv: deep fibular n.

Function:

1. extension of toes 2-5
2. dorsiflexion of ankle

Question 5

Extensor Hallucis Longus

O:

Answer 5

O: middle part of the anterior fibula, interosseous membrane

Question 6

Extensor Hallucis Longus
Inner:
Function:

Answer 6

Innerv: deep fibular n.

Function:

1. extension of great toe
2. dorsiflexion of ankle

Question 7

What muscles is a separated part of Extensor Digitorum Longus, and shares its synovial sheath?

Answer 7

Fibularis Tertius

Question 8

What branch of the popliteal a. supplies the anterior compartment of the leg?

Answer 8

anterior tibial a.

Question 9

Which a. descends between tibialis & extensor digitorum longus?

Answer 9

anterior tibial a.

Question 10

What does the anterior tibial a. become as it emerges below inferior extensor retinaculum?

Answer 10

dorsalis pedis a.

Question 11

Which nerve enters the anterior compartment between fibularis longus & the neck of the fibula, and then travels with the anterior tibial a.?

Answer 11

deep fibular n.

Question 12

What is the clinical condition described?

*an inability to actively dorsiflex the foot resulting from injury to the deep fibular n.

Answer 12

foot drop

Question 13

What happens if the common fibular n. is injured at the fibular neck?

Answer 13

an inability to evert the foot results, as well as foot drop