LL: Leg

Question 1

Lower femur bony anatomy

Answer 1

Question 2

Proximal tibia bony anatomy

Answer 2

Question 3

Proximal fibula bony anatomy

Answer 3

Question 4

Popliteal fossa content

Answer 4

From superficial to deep

Common peroneal nerve (medial to biceps femoris)

Tibial nerve (lateral to popliteal vessels)

Popliteal vein

Popliteal artery

Question 5

The membranes separatign the compartments of the leg

Answer 5

Question 6

Which tissues stabilise tibiofibular joint

Answer 6

Interosseous membrane

Anterior and posterior tibiofibular ligaments

Question 7

Muscles of posterior compartment of leg

Answer 7

Superficial: gastrocnemius, plantaris, soleus

Deep: popliteus, flexor hallucis longus, flexor digitorum longus, tibilais posterior

Question 8

Origin and insertion of gastrocnemius

Answer 8

Medial and lateral condyle to calcaneus

Question 9

Origin and insertion of plantaris

Answer 9

Lateral supracondylar line of femur to calcaneus

Question 10

Origin and insertion of soleus

Answer 10

Soleal line/medial tibia to calcaneus

Question 11

Innervation to posterior compartment of leg

Answer 11

tibial nerve

Question 12

Function of gastrocnemius and plantaris

Answer 12

Plantar flex

Flex knee

Question 13

Function of soleus

Answer 13

Plantar flex

Question 14

Origin and insertion of popliteus

Answer 14

Lateral femoral condyle to posterior tibia

Question 15

Origin and insertion of flexor hallucic longus

Answer 15

posterior fibula to distal phalanx f big toe

Question 16

Origin and insertion of flexor digitorum longus

Answer 16

Tibia to distal phalanges of lateral 4 toes

Question 17

Origin and insertion of tibialis posterior

Answer 17

Interosseus membrane to tuberosity of navicular bone

Question 18

Function of popliteus

Answer 18

Stabilises knee joint (resists lateral flexion of tibia on femur)

Unlocks knee joint (laterally rotates femur on fixed tibia)

Question 19

Action of flexor hallucis longus

Answer 19

Flexes great toe

Question 20

Action of flexor digitorum longus

Answer 20

Flexes lateral four toes

Question 21

Action of tibialis posterior

Answer 21

Inversion

Plantarflexion

Question 22

Arterial supply of Leg

Answer 22

Sural: gastrocnemius

Anterior tibial: anterior compartment

Posteriro tibial: Posterior and lateral compartment

Question 23

Tibial nerve branches

Answer 23

Sural nerve

Medial calcaneal nerve

Question 24

Sural nerve supplies

Answer 24

Lower posterolateral side of leg and little toe

Question 25

Medial calcaneal nerve supplies

Answer 25

Medial side of leg Sole of the heel

Question 26

Muscles of lateral compartment of the leg

Answer 26

Fibularis longus Fibularis brevis

Question 27

Origin and insertion of fibularis longus

Answer 27

Fibular head to medial cuneiform and base of metatarsal 1

Question 28

Origin and insertion of fibularis brevis

Answer 28

Lower 2/3 of fibular shaft to lateral tubercle of metatarsal 5

Question 29

Action of fibularis longus and brevis

Answer 29

Eversion

Question 30

Innervation of lateral compartment of leg

Answer 30

superficial fibular nerve

Question 31

Superficial fibular nerve sensory innervation

Answer 31

Dorsum of foot except: - web space between great and 2nd toe (Deep fibular) - lateral side of little toe (sural branch of tibial nerve)

Question 32

Muscles of anterior compartment of leg

Answer 32

Tibialis anterior Extensor hallucis longus Extensor digitorum longus Fibularis tertius

Question 33

Origin and insertion of tibialis anterior

Answer 33

Tibia to medial cuneiform

Question 34

Origin and insertion of Extensor hallucis longus

Answer 34

medial fibula to distal phalanx of distal toe

Question 35

Origin and insertion of extensor digitorum longus

Answer 35

medial fibula to distal phalanges bases

Question 36

Innervation of anterior compartment of leg

Answer 36

Deep fibular nerve

Question 37

Action of tibialis anterior

Answer 37

dorsiflexion inversion

Question 38

Action of extensor hallucis longus/digitorum longus

Answer 38

dorsiflexion Extension of great/lateral toes

Question 39

Action of fibularis tertius

Answer 39

Dorsiflexion Eversion

Question 40

Arterial supply of anterior compartment of leg

Answer 40

Question 41

Action of anterior cruciate ligament

Answer 41

stops anterior displacement of tibia on femur

Question 42

Which structure separates the PCL from popliteal artery

Answer 42

oblique popliteal tendon