Anterior and Lateral Leg

Question 1

what is the musculo-venous pump enhanced by?

Answer 1

the crural fascia in the leg. very important

Question 2

what is the action of the tibialis anterior muscle?

Answer 2

dorsiflexion and inversion of the foot because the tendon is on the medial side– a smidge higher than tom dick and harry

Question 3

what is the action of the extensor digitorum longus muscle?

Answer 3

extends the lateral four digits and dorsiflexion

allow extension at the

Question 4

what is the action of the fibularis tertius m?

Answer 4

dorsiflexion

TENDON IS ON LATERAL SIDE NOW SO IT IS CAN EVERT THE FOOD

Question 5

what is the action of the extensor hallucis longus m?

Answer 5

extends the hallux and dorsiflexes the ankle

Question 6

what nerve supplies the anterior compartment of the leg?

Answer 6

deep fibular nerve

Question 7

how do you test for a compromised deep fibular nerve?

Answer 7

poke around in the first interdigital space (flip flop area)

Question 8

what is all supplied by the deep fibular nerve?

Answer 8

anterior compartment muscles
ankle joint and metacarpal phalangeal joints
dorsal intrinsic foot muscles
skin between first and second digit

Question 9

what is the arterial supply to the anterior leg?

Answer 9

anterior tibial artery

Question 10

what does the anterior tibial artery run alongside?

Answer 10

with the deep fibular artery

Question 11

what is the innervation of the lateral compartment?

Answer 11

superficial fibular nerve

Question 12

how is blood supplied to the lateral compartment of the leg?

Answer 12

perforating arteries of the fibular artery which arises from the posterior tibial artery

Question 13

what is the action of the fibularis longus and brevis m.

Answer 13

eversion and plantar flexion

Question 14

what is the innervation to the the lateral compartment of the leg?

Answer 14

superficial fibular n

Question 15

in addition to fibularis longus and brevis, what does the superficial fibular nerve supply?

Answer 15

almost the entirety of the dorsum of the foot

Question 16

what is foot drop?

Answer 16

loss of dorsiflexion and eversion. it is therefore difficult to achieve heel strike. pt will have a high stepping gait, waddling gait, or swing out gait. if leg swung strongly forward, the foot strikes with a “clop”

Question 17

why is bleeding inside compartment of the artery a potentially very bad problem? aka- what is compartment syndrome?

Answer 17

because you can tear off some branches of the posterior tibial artery–> get pretty significant bleeding into the posterior compartment –> get bad swelling –> bad bc the compartments are SO compartmentalized–> the bleeding begins to cut off the additional bf to leg–> leg can go ischemic–> have to do a fasciotomy –> literally open wound to let a swelling eventually go down