Lab Review

Question 1

Outer lining of all three leg compartments; surrounds anterior, lateral and posterior compartments

Answer 1

Crural fascia

Question 2

Formed by overlap of Semitendinosus, Sartorius & Gracilis tendon insertions

Answer 2

Pes anserinus

Question 3

Most medial and superficial dorsiflexor of anterior compartment. Lies on lateral surface of the tibia. It is the strongest dorsiflexor but also inverts the foot because of its attachment to the medial cuneiform and the base of the first metatarsal. ‘Shin splints’ is an old term

Answer 3

Tibialis anterior muscle

Question 4

This muscle originates from the middle part of the anterior fibula and the interosseous membrane. It inserts into the dorsal aspect of the distal phalanx of the great toe.

Answer 4

Extensor hallucis longus muscle

Question 5

This muscle originates from the lateral condyle of the tibia, the interosseous membrane and the superior ¾ of the fibula. It inserts by 4 tendons into the middle and distal phalanges of lateral 4 digits.

Answer 5

Extensor digitorum longus muscle

Question 6

This muscle originates from the lower part of the anterior fibula and the interosseous membrane and inserts into the dorsum of the base of the 5th metatarsal. It is really a lower part of the EDL. EVERTS foot. Innervated by deep fibular nerve.

Answer 6

Fibularis (peroneus) tertius muscle

Question 7

Runs between EHL and Tibialis Anterior on surface of interosseus membrane in anterior compartment. Supplies muscles of anterior compartment & sensory to web space b/w 1st and 2nd toes.

Answer 7

Deep fibular (peroneal) nerve

Question 8

Pierces and then runs on the interosseous membrane with the deep fibular nerveConnects with fibular artery via perforating branch. Continues as dorsalis pedis on the foot.

Answer 8

Anterior tibial artery

Question 9

Intrinsic muscle of the foot. Inserts into proximal phalanx. Helps extend the toes at MP and IP joints
Originates from the calcaneus and its tendons attach to the long flexor tendons of four digits (EDL). Innervation by the deep fibular nerve. EHB attaches to the dorsal aspect of the proximal phalanx of the great toe with EHL.

Answer 9

Extensor digitorum brevis/Extensor hallucis brevis muscles

Question 10

Extension of anterior tibial artery,

Answer 10

Dorsalis pedis artery

Question 11

originates from the head and superior 2/3 of the fibula and inserts into the base of the 1st metatarsal and medial cuneiform.

Answer 11

Fibularis (peroneus) longus muscle

Question 12

covers back tendons of foot

Answer 12

Fibular (peroneal) retinacula