Anatomy G50 Thigh, Gluteal Region And Posterior Thigh

Front 1

Where is the intertrochanteric crest found?

Back 1

this is on the posterior side of the femur, between the greater trochanter and lesser trochanter

Front 2

what are the four major bony features of the proximal tibia?

Back 2

lateral and medial condyles,

intercondylar eminence

tibial tuberocity

Front 3

what are the two surface features of the gluteal region called?

Back 3

intergluteal cleft (butt crack)

and gluteal sulcus (crease on the inferior portion of the butt cheek)

Front 4

what does the piriformis do? and where is it located? nerve?

Back 4

This is a lateral rotator and stabilizer of the femur

this passes through the greater sciatic foramen, and runs to the greater trochanter of the femur

Nerve to piriformis- S1,S2

Front 5

What origin and insertion of obturator internus? nerve?

Back 5

this runs from obturator membrane through the lesser sciatic foramen, and attaches to the greater trochanter

nerve to obturator internus L5,S1

Front 6

what muscles border the obturator internus?

Back 6

this is bordered by the the super gemellus, and the inferior gemellus

both of these attach to the greater trochanter

Front 7

what is the origin and insertion of quadratus femoris?

Back 7

this runs from the ischieum to the intertrochanteric crest

it is a flat square muscle

Front 8

what is the origin and insertion of obturator externus? nerve?

Back 8

this runs from the pubis to the trochanteric fossa (deep muscle)

innervated by obturator nerve (L2-L4)

Front 9

What is the origin and insertion of Tensor Fascia lata muscle? nerve?

Back 9

this runs from the ASIS and iliac crest to the ilitibial tract (IT BAND)

innervated by superior gluteal nerve L4-S1

Front 10

What is the origin and insertion of Gluteus Maximus? nerve?

Back 10

this is innervated by the inferior gluteal nerve

comes from the broad origin (on da butt) and runs to the gluteal tuberocity, as well as the IT tract

Front 11

What is the origin, insertion, and nerve for gluteus medius and minimus muscles?

Back 11

These are both innervated by the superior gluteal nerve L5,S1

These ABduct the thigh, Runs from Ilium to greater trochanter

Front 12

What is the trendelenburg sign?

Back 12

this is a sign of superior gluteal nerve lesion! will see a hip drop on the contralateral side from the affect side.

Front 13

Where is the trochanteric bursa located?

Back 13

between the gluteus maximus and greater trochanter

Front 14

where is the gluteofermoral bursa located?

Back 14

this is located between the IT tract, and vastus lateralis

Front 15

where is the ischial bursa located?

Back 15

this is located between gluteus maximus and ischial tuberocity

Front 16

What nerve innervates the posterior compartment of the thigh?

Back 16

this is done by the tibial division of the sciatic nerve

Front 17

what artery supplies the posterior thigh muscles?

Back 17

the deep artery of the thigh, which is a branch off the femoral artery

Front 18

Where does the semitendinosus muscle run? what nerve supplies it? what artery?

Back 18

This is supplied by the sciatic nerve (tibial branch), and the deep artery of the thigh

It runs from ischial tuberosity, to pes ansurinus (medial condyle of tibia (common flexor origin...medial again))

Flexs, and medially rotates leg

Front 19

Where does the semimembranosus muscle run? what nerve supplies it? what artery?

Back 19

this runs deep and medial to semitendinosus,
ischial tuberosity then to broadly attaches to medial condyle of tibia (CFO), and is continious with oblique popliteal ligament

Tibial N, deep artery of thigh

Front 20

Where does the biceps femoris run? what nerve acts on it? what artery?

Back 20

the biceps femoris has two heads a long and short head.

Long head- runs from Ischial tuberosity (with semitendinosus...) to the fibula head (tibial division)

Short head- Linea Aspira to to fibula head (Common fibular division)

Front 21

How is the nerve innervation of biceps femoris funny?

Back 21

Long head- tibial division

short head- Common fibular division

(both from sciatic nerve)

Front 22

what muscle attaches to the oblique popliteal ligament?

Back 22

the semimembranosus muscle

Front 23

What the 2 major portions of the Adductor Magnus Muscle? what are their nerves?

Back 23

the is an adductor portion and a hamstring portion

adductor portion has the obturator nerve

hamstring portion has the tibial division of the sciatic nerve (like most posterior compartment muscles)

Front 24

What does the adductor portion of the adductor magnus muscle do? where does it run? what nerve acts on it?

Back 24

the obturator nerve acts on it

it runs from the ischum to the medial side of the femur

this adducts the thigh (big ass muscle)

Front 25

what does the hamstring portion of the adductor magnus muscle do? where does it run? what nerve acts on it?

Back 25

this also adducts the thigh, it runs from the ischial tuberosity to the adductor tubercle of the femur

the tibial branch of the sciatic nerve acts on it.

adducts thigh

Front 26

What muscles meet at the Pes Ansurinus?

Back 26

the sartiorus, the semitendinosus, and the gracilis

Front 27

What does the superior gluteal nerve innervate? what is its origin?

Back 27

L4-S1

gluteus medius/minimus, and tensor fascia lata

Front 28

what does the inferior gluteal nerve innervate? what is its origin?

Back 28

L5-S2

gluteus maximus

Front 29

what does the posterior femoral cutaneous nerve innervate? what is its origin?

Back 29

S2-S3

and sensory to inferior butt, and posterior thigh

Front 30

What is the origin of the sciatic nerve? what muscles does it act on? what are its branches?

Back 30

This comes from L4-S3

This acts on all posterior compartment muscles except for BF short head
(BF long head, semitendinosus, semimembraneosus, and the hamstring portion of the adductor magnus muscle)

Its final branches are the Tibial nerve (posterior leg/foot) (anterior divison)

and the Common Fibular nerve (anterior/lateral leg, dorsal foot) (posterior division)

Front 31

What nerve is most commonly involved in piriformis syndrome? what does it innervate?

Back 31

the posterior division, aka the common fibular nerve.

this innervates the anterior/lateral leg and dorsal foot

(Sciatic comes from L4-S3)

Front 32

what does the superior gluteal artery supply?

Back 32

gluteus minimus and medius

Front 33

what does the inferior gluteal artery supply?

Back 33

this supplies the gluteus maximus and some superior portions of posterior thigh muscles

Front 34

where does the deep gluteals lymph drain to?

Back 34

internal iliac nodes

Front 35

what does the superfical gluteal regions lymph drain to?

Back 35

the goes to superficial inguinal nodes then to external iliac nodes

Front 36

where does deep posterior thigh drain lymph to?

Back 36

deep inguinal to external iliac

Front 37

where does superficial posterior thigh drain lymph to?

Back 37

superficial inguinal nodes, to external iliac nodes