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Z MD1 Hip and leg anatomy > leg > Flashcards

Flashcards in leg Deck (32):
0

which part of the tibia is subcuntaneous

the medial surface of the tibia

1

where is the soleal line

on the posterior superior aspect of the tibia

2

function of the soleal line

delineates the attachment of soleus and popliteus

3

general action of muscles in the anterior compartment of the leg

dorsiflex the foot and extend the toes

4

general action of the muscles in the posterior compartment of the leg

plantarflex the foot and flex the toes

5

general action of the muscles in the lateral compartment of the leg

evert the foot

6

what are the boundaries of the anterior compartment of the leg

bounded by the tibia, the interosseous membrane and the anterior intermuscular septa

7

what are the muscles of the anterior compartment of the leg

tibialis anterior extensor hallicus longus extensor digitorum longus (fibularis tertius breaks off)

8

function of tibialis anterior

important in dorsiflexion and inversion

9

function extensor hallicus longus

extensor of the big toe

10

function of extensor digitorum longus

extensor for the other 4 toes

11

origin of the anterior muscles of the leg

arise from the anterior aspect of the tibia and fibula and the interosseous membrane in between

12

insertion of tibialis anterior

inserts into the medial side of the foot into the medial cunieform and then the base of the 1st metatarsal

13

what is the order of the muscles in the anterior compartment when going through the extensor retinaculum

"Timothy has a nasty, dirty toe" T = tibialis anterior H = EHL A+N = anterior tibial artery and deep peroneal nerve D = EDL T = fibularis tertius

14

explain the insertion of EDL and EHL

the EDL splits into 3 parts - the middle component inserts into the middle phalanx - the other components insert into the distal phalanx - fibularis tertius splits off and inserts into the base of the 5th metatarsal EHL inserts into the big toe

15

what are the muscles in the lateral compartment of the leg

fibularis longus fibularis brevis

16

what determines the borders of the lateral compartment of the leg

between the anterior and posterior intermuscular septa, the fibula and the encircling layer of fascia

17

function of the lateral compartment of the leg

eversion

18

origin of fibularis longus

origin = arises from the shaft of the fibula

19

describe the route and insertion of fibularis longus

insertion = runs behind the lateral malleolus and turns and passes along and beneath the sole of the foot from lateral to medial where it inserts into the medial cunieform and the base of the 1st metatarsal

20

insertion of fibularis brevis

inserts into the 5th metatarsal (same insertion of fibularis tertius)

21

which out of the fibularis longus and brevis groove the lateral malleolus

fibularis brevis

22

what is the most superficial muscle of the posterior component of the leg

gastrocneumius

23

what defines the posterior compartment of the leg

behind the tibia, behind the IO membrane, behind the fibula and behind the IM septa

24

what are the 3 muscles of the deep posterior component of the leg

tibia posterior FHL FDL (mirror of the anterior compartment)

25

what are the superficial muscles of the posterior compartment of the leg

gastrocnemius plantaris popliteus soleus

26

origin and insertion of gastrocnemius

origin = medial and lateral condyle of the femur insertion = common tendinous insertion of the archilles tendon into the calcenous

27

major function of popliteus

important in unlocking the knee

28

what is the importance of soleus

complex venous plexus lies just deep to soleus = soleus important in venous return

29

which muscle of the posterior compartment of the leg is a vistigal muscle

plantaris

30

what is the order of the deep posterior muscles of the leg passing under the flexor retinaculum

"Tom Dick and very naughty Harry" T = tibialis posterior D = FDL AVN = tibial nerve, posterior tibial artery and vein H = FHL

31

insertion of tibialis posterior

(same as tibialis anterior) medial cunieform and base of 1st metatarsal