3.5 Popliteal Fossa and Leg

Question 1

Diamond shaped space posterior to the knee

Answer 1

Popliteal fossa

Question 2

What are the superior-lateral, superior-medial, and inferior boundaries of the popliteal fossa

Answer 2

Superior-lateral: biceps femoris
Superior-medial: semitendinosus and semimembranosus
Inferior: medial and lateral heads of gastrocnemius

Question 3

What vasculature and nerves are contained in the popliteal fossa

Answer 3

Popliteal a. v.
Tibial nerve
Common fibular nerve
Small saphenous vein

Question 4

Deep fascia on the leg

Answer 4

Crural fascia

Question 5

Crural fascia separates leg into

Answer 5

Four regions

Question 6

Paralysis causes foot-drop due to injury to

Answer 6

Common fibular nerve or it’s deep branch

Question 7

Painful swelling of anterior compartment muscles after vigorous or lengthy exercise

Answer 7

Shin- splints

Question 8

Anterior crural compartment muscles

Answer 8

Tibialis anterior
Extensor hallucis longus
Extensor digitorum longus
Fibularis tertius

Question 9

Lateral crural compartment muscles

Answer 9

Fibularis longus

Fibularis brevis

Question 10

Superficial posterior crural compartment muscles

Answer 10

Triceps surae

Plantaris

Question 11

Deep posterior crural compartment muscles

Answer 11

Tibialis posterior
Flexor digitorum longus
Flexor hallucis longus

Question 12

Tibialis anterior origin and insertion

Answer 12

O: lateral tibial condyle, lateral surface of tibia, and interosseous membrane
I: medial cuneiform and first metatarsal

Question 13

Tibialis anterior nerve and action

Answer 13

N: deep fibular nerve
A: dorsiflexes and inverts foot

Question 14

Extensor hallucis longus origin and insertion

Answer 14

O: middle anterior fibula and interosseous membrane
I: distal phalanx of hallux

Question 15

Extensor hallucis longus nerve and action

Answer 15

N: deep fibular nerve
A: dorsiflexes foot, extends hallux