Anatomy LE

Question 1

Question

Answer 1

Answer

Question 2

this is the only muscle innervated by the peroneal division of the sciatic nerve above the fibular neck

Answer 2

the short head of the biceps femoris

Question 3

why is the innervation of the biceps femoris interesting

Answer 3

this is the only muscle innervated by the peroneal division of the sciatic nerve above the fibular neck

Question 4

this is the most common neural injury during THA

Answer 4

peroneal division of the sciatic nerve

Question 5

mnemonic for shermans hip exam

Answer 5

3, 5, 24, 24, 5, 45, 12

Question 6

these two nerves exit the pelvis through the greater sciatic foramen and reenter through the lesser

Answer 6

pudendal nerve and the nerve to obturator internus

Question 7

femoral nerve innervation

Answer 7

iliacus, psoas, sartorius, usually pectineus, and quad femoris (vastus lateralis, intermedius, medialis, and rectus femoris)

Question 8

obturator nerve innervation

Answer 8

gracilis, 3 adductors (magnus, longus, and brevis)

Question 9

inferior gluteal nerve innervation

Answer 9

gluteus maximus

Question 10

sciatic nerve innervation

Answer 10

semi-T, semi-M, biceps femoris (long head is tibial division, short head is peroneal division) and part of adductor magnus

Question 11

2 semis, 2 biceps, and half of adductor magnus

Answer 11

innervation of the sciatic nerve

Question 12

tibial nerve innervation

Answer 12

gastroc, soleus, plantaris, tib post, FDL, FHL, medial and lateral plantar nerves

Question 13

deep peroneal nerve innervation

Answer 13

Anterior tib, EDL, EHL, EDB, peroneus tertius

Question 14

SPN innervation

Answer 14

peroneus longus and brevis

Question 15

peroneus longus and brevis supplied by

Answer 15

SPN

Question 16

gracilis, 3 adductors (magnus, longus, and brevis) supplied by

Answer 16

obturator

Question 17

strongest portion of the hip joint capsule

Answer 17

iliofemoral ligament

Question 18

internal rotation of the hip capsule is limited by this structure

Answer 18

ischiofemoral ligament

Question 19

ischiofemoral ligament does this

Answer 19

limits internal rotation of the hip capsule

Question 20

this is the division between the greater and lesser sciatic foramina

Answer 20

sacrospinous ligament

Question 21

this is the inferior border of the lesser sciatic foramen

Answer 21

sacrotuberous ligament

Question 22

the exit and spatial orientation of the sciatic nerve

Answer 22

as it comes out of the greater sciatic foramen, the sciatic nerve divides into a peroneal and tibial division, the latter of which is more medial. this is why peroneal is more commonly injured

Question 23

where is the lumbar plexus found

Answer 23

the lumbar plexus is found on the anterior surface of the quadratus lumborum, deep to the psoas

Question 24

where is the genitofemoral nerve found

Answer 24

the genitofemoral nerve pierces the psoas to lie on its anteromedial surface

Question 25

where is the femoral nerve found, proximal to its exit under the inguinal ligament

Answer 25

femoral nerve is between the iliacus and the psoas

Question 26

where is the LFCN found

Answer 26

LFCN lies on top of iliacus, exits underneath the inguinal ligament

Question 27

femoral triangle

Answer 27

sartorius laterally, pectineus medially, and inguinal ligament. Floor is iliacus, psoas, pectineus, and adductor longus (I Pso Pec Add Long)

Question 28

course of the saphenous nerve at the apex of the femoral triangle

Answer 28

saphenous nerve branches here and courses under sartorius

Question 29

POPS IQ

Answer 29

pudendal, obturator internus, postfemoral cutaneous, sciatic, inferior gluteal, quadratus femoris.

Question 30

this part of the obturator nerve can be to blame for referred knee pain

Answer 30

the posterior division travels to the knee

Question 31

the corona mortis is a connection between

Answer 31

inferior epigastric branch of the external iliac and the obturator arteries

Question 32

this vessel supplies the gluteus maximus

Answer 32

inferior gluteal artery

Question 33

this vessel supplies the short external rotators

Answer 33

inferior gluteal art

Question 34

this vessel can be injured in the sciatic notch

Answer 34

superior gluteal art

Question 35

this vessel can be injured with anterior inferior screw placement

Answer 35

obturator art

Question 36

this vessel can be injured with anterior superior screw placement

Answer 36

external iliac art

Question 37

origin of the lateral and medial femoral circumflex arts

Answer 37

these come of the profunda femoris, after it splits off the femoral art

Question 38

Smith Pete

Answer 38

TFL (SGN) and sartorius (femoral) superficially, and the rectus and gluteus medius deep. Danger is LFCN and the ascending branch of the LFCA

Question 39

Watson Jones

Answer 39

TFL and medius (both SGN). Descending branch of LFCA

Question 40

Posterior hip approach

Answer 40

G Max (IGN) and G medius/TFL (SGN). Sciatic n, inferior G art, MFCA if quadratus divided

Question 41

medial hip approach

Answer 41

gracilis and adductor longus. Anterior division of obturator nerve, MFCA (between the adductor brevis and pectineus)

Question 42

muscles of the posterior thigh

Answer 42

2 semis, 2 biceps. Gracilis is an adductor.

Question 43

the two branches of the sciatic travel together here right before they split

Answer 43

you can find the sciatic divisions still together between the semiMEMBRANOSUS and the LONG biceps head as they enter the popliteal fossa and divide

Question 44

the relationship of the tibial nerve and popliteal vessel as they exit the pop fossa

Answer 44

the nerve is posterior to the artery

Question 45

the tethering structure of the distal pop fossa

Answer 45

the tibial nerve and pop art descend b/t the two heads of the gastroc

Question 46

this supplies the femoral head until age 4

Answer 46

posterior branch of the obturator artery

Question 47

contents of the posterolateral corner of the knee

Answer 47

arcuate lig, popliteus, posterolateral capsule, LCL, popliteofibular ligament, biceps femoris, fabellofibular lig, and IT band

Question 48

anterior lower leg contents

Answer 48

anterior tib, EHL, EDL, peroneus tertius. DPN, anterior tibial artery.

Question 49

lateral lower leg contents

Answer 49

peroneus brevis and longus. SPN

Question 50

deep posterior lower leg contents

Answer 50

FHL, FDL, Popliteus, Posterior tib. Tibial nerve, posterior tibial and peroneal arteries

Question 51

superficial posterior lower leg contents

Answer 51

gastroc, soleus, plantaris. No neurovasc structures

Question 52

this branch of the popliteal art supplies the menisci

Answer 52

the menisci are supplied by the medial and lateral geniculates

Question 53

this branch of the popliteal art supplies the cruciate ligaments

Answer 53

the cruciate ligaments are supplied by the middle geniculate art

Question 54

this can be injured during a lateral release

Answer 54

the superior lateral geniculate art can be injured during a lateral release

Question 55

order of insertion of structures on the proximal fibula

Answer 55

from anterior to posterior, the LCL, popliteofibular lig, and the biceps

Question 56

popliteus insertion on the distal femur

Answer 56

inferior, anterior, and deep to the LCL

Question 57

LCL insertion on the femur

Answer 57

posterior and superior to the popliteus tendon

Question 58

this is the most anterior structure inserting on the proximal fibula

Answer 58

the LCL

Question 59

how is the ATFL tested

Answer 59

to tighten this the foot is plantar flexed

Question 60

how is the CFL tested

Answer 60

to tighten this the foot is inverted and neutral

Question 61

actual name for the spring ligament

Answer 61

plantar calcaneonavicular ligament is the spring ligament

Question 62

baxters nerve

Answer 62

first branch of lateral plantar nerve, to Abductor DQ

Question 63

where does the tibial nerve divide

Answer 63

under the flexor retinaculum

Question 64

into what does the tibial nerve divide

Answer 64

into the medial and lateral plantar nerves

Question 65

the medial plantar nerve runs deep to this

Answer 65

abductor hallucis

Question 66

the lateral plantar nerve runs deep to this

Answer 66

quadratus plantae

Question 67

analog of the medial plantar nerve

Answer 67

think of the medial plantar as equivalent to the median nerve of the hand

Question 68

analog of the lateral plantar nerve

Answer 68

think of the lateral plantar as equivalent to the ulnar nerve of the hand, as it innervates the intrinsics of the foot that involve minimi, interosseous, and adductor hallucis

Question 69

only intrinsic foot muscle not innervated by the tibial nerve

Answer 69

EDB is supplied by the DPN

Question 70

this muscle affects motion of the great toe and is innervated by the lateral plantar nerve

Answer 70

the adductor hallucis

Question 71

adductor hallucis innervation

Answer 71

this muscle is innervated by the lateral plantar nerve

Question 72

this artery has been shown to be the dominant blood supply in some femoral heads

Answer 72

the inferior gluteal artery, which often anastomoses with the deep branch of the medial femoral circumflex art