Lab 15: Anterior Compartment of Leg

Question 1

tributaries of the great saphenous v. proceeding posteriorly drain into the …

Answer 1

small saphenous v.

Question 2

deep fascia of the leg

Answer 2

crural fascia

Question 3

does the crural fascia continue across the anterior surface of the tibia?

Answer 3

No

Question 4

tibial origins of the tibialis anterior m

Answer 4

lateral condyle and proximal half of lateral surface

Question 5

crural fascia originis of tibialis anterior m

Answer 5

interosseous membrane b/w tibia and fibula and the fascia adjacent to and overlying the tibialis anterior

Question 6

the extensor digitorum longus arise mainly from …

Answer 6

anterior surface of the fibula

also originates from lateral condyle of tibia, anterior crural intermuscular septum, the crural fascia overlying the muscle and the crural fascia separating it from the tibialis anterior

Question 7

origin of peroneus tertius

Answer 7

anterior surface of distal portion of fibula

Question 8

origin of extensor hallucis longus

Answer 8

anterior aspect of the fibula and the interosseous membrane

Question 9

separating the bellies of the tibialis anterior and the extensor digitorum longus, you find what structures?

Answer 9

• anterior tibial artery and venae comitantes

- deep peroneal n.

Question 10

what a. ascends the within the tibialis anterior m. to join the circumpatellar anastomosis?

Answer 10

anterior tibial recurrent a.

may be seen near retracted tibialis anterior m. coming off anterior tibial a.

Question 11

approximately 5 cm proximal tot he ankle, branhces are identified coming off the anterior tibial a. - what might they be?

Answer 11

anterior medial and posterior lateral malleolar branches

Question 12

where does the anterior perforating branch of the peroneal a. pierce the interosseous membrane?

Answer 12

• about 5 cm proximal to the lateral malleolus

- you can follow it distally and demonstrate its communication with the anterior lateral malleolar and lateral tarsal a

Question 13

what branch of the deep peroneal n. goes to the ankle joint?

Answer 13

articular branch of deep peroneal n.