Posterior Compartment of the Leg

Question 1

msucles in superficial posterior leg

collectively+where they are in relation to each other

individually-whats differece

Answer 1

triceps surae

• gastro most superficial (on top of other two)
• plantaris is medial
• soleous is lateral

gastrocnemius-two heads

soleus-can be seen more inferiorly as gastro narrows

plantaris-long thin tendon

Question 2

gastrocnemius attachments

Answer 2

medial and lateral epicondyles of femur

calcaneal tuberosity via achilles tendon

Question 3

gastrocnemius innervation

Answer 3

tibial nerve s1,2

Question 4

gastrocnemius actions

Answer 4

flex letg at knee joint

plantar flex food at talocrural joint

Question 5

soleus attachments

Answer 5

posterior surface of head and neck of fibula and solid line of tibia

calcaneal tuberosity via achilles tendon

Question 6

soleus innervation

Answer 6

tibial nerve s1,2

Question 7

soleus actions

Answer 7

plantar flex and food at talocrural joint

flex let at knee joint

Question 8

plantaris attachments

Answer 8

lateral epicondyle

calcaneal tuberosity via achilles tendon

Question 9

plantaris innervation

Answer 9

tibial nerve s1,2

Question 10

plantaris actions

Answer 10

dont do fucking shit

Question 11

tendocalcaneous

what does

where attach

Answer 11

achilles tendon

distal attachment of triceps surae

attaches to calcaneus

Question 12

popliteus msucle

where attach

what does contraction do

where does tendon go

Answer 12

between tibia and lateral aspect of lateral femoral condyle

rotates femur on fixed tibia to unlock knee

courses medial to lateral collateral ligament of knee

Question 13

deep posterior compartment muscles

what they look like in relation to each other

Answer 13

flexor hallucis longus-most medial

tibialis posterior-most superior

flexor digitorum longus-most lateral

Question 14

flexor hallucis longus attachments

Answer 14

posterior two thirds of fibula

base of 1st distal phalanx

Question 15

flexor hallucis longus innervation

Answer 15

tibial nerve l5-s2

Question 16

flexor hallucis longus actions

Answer 16

flex foot at talocrural joint

invert food at subtler going

plantar flex 1st toe at MTP and IP joints

supports medial food of arch

Question 17

tibialis posterior attachments

Answer 17

interosseous membrane and adjacent borders of tibia and tibia

navicular tuberosity, medial , intermediate, and lateral cuneiform bones

bases of 2nd and 4th metatarsals

Question 18

tibialis posterior innervation

Answer 18

tibial nerv l4,5

Question 19

tibialis posterior actions

Answer 19

plantar flex the food at talocrural joint

invert food at subtler joint

support longitudinal and transverse arches of foot

Question 20

flexor digitorum longus attachments

Answer 20

posterior surface of middle third of tibia

base of distal phanalges of 2nd to 5th digits

Question 21

flexor digitorum longus innervation

Answer 21

tibial nerve

l5-s2

Question 22

flexor digitorum longus actions

Answer 22

plantar flex foot at talocrural joint

invert food at subtler joint

plantar flex 2nd to 5th toes and MTP and IP jints

Question 23

what do anterior and posterior tibial arteries come from

what are thier pathways

what about tibial nerve

Answer 23

popliteal artery

ant-passes thorugh superior deficiency in interosseous membrane to enter anterior compartment of leg

post-results in fibular artery branch

tibial nerve enters sole of foot with post artery by going under medial malleolus-kept in place by flexor retinaculum

Question 24

flexor retinaculum

Answer 24

transversely oriented fascial thickening extending posteriorly from medial malleolus

straps down plantar flexor tendons
-[;ace where deep posterior compartment muscles’ tendons enter plantar surface offoot

Question 25

stuff in the flexorretinaculum 5

Answer 25

tendon of tibias posterior

tendon of flexor digitorum longs

tendon of flexor hallucis longs

postreior tibial artery

poseteior tibial nerve