*4 - Adductor & Flexor Thigh/popliteal Fossa

Front 1

what m. inserts along the linea aspera?

Back 1

adductor magnus m. and adductor longus (middle 1/3)

Front 2

is the adductor tubercule medial or lateral?

Back 2

medial

Front 3

name the 6 mm of the medial (adductor) compartment of the thigh

Back 3

1) gracilis m. (most mediall)
2) adductor longus m.
3) pectineus m. (exception to innervation)
4) adductor brevis m.
5) adductor magnus m.
6) obturator externus m. (most posterior)

Front 4

what is the main innervation of the mm of the medial compartment?

Back 4

obturator n. (L2-L4)

Front 5

what is/are the exception(s) to the main innervation of the adductor (medial) compartment?

Back 5

pectineus m. = femoral n. (L2-L4)
adductor magnus m = obturator n. plus tibial n.

Front 6

name the 3 mm of the flexor (posterior) compartment of the thigh. these are aka the "___________" mm.

Back 6

"hamstring" mm:
1) biceps femoris
2) semitendinosus
3) semimembranosus

Front 7

what is the main innervation of the the posterior compartment of the thigh?

Back 7

the tibial n. (L4-S3)

Front 8

what is/are the exception(s) to the main innervation of the posterior compartment of the thigh?

Back 8

the short head of the biceps femoris m. is innervated by the common peroneal n. (L4-S2)

Front 9

what m. makes up the lateral compartment, and what is it innervated by?

Back 9

the tensor fascia lata

N: superior gluteal n. (L4-S1)

Front 10

the pez anserinus is the common insertion for what 3 mm? what are their innervations? what is their action? medial or lateral?

Back 10

3 mm: SGT FOT
1) Sartorius m. - Femoral n.
2) Gracilis m. - Obturator n.
3) Semitendinosus m. - Tibial n.

a: flex knee joint
medially located

Front 11

the obturator n. ( - ) bifurcates into a ___________ and _________ branch

Back 11

anterior and posterior branches

Front 12

the ______ branch of the obturator n. arches over the obturator externus m, passes superficial to the adductor brevis m., and supplies the gracilis, adductor longus, and adduct brevis mm.

Back 12

the anterior branch

Front 13

the ____________ branch of the oburator n. pierces the obturator externus m., passes between the adductor brevis and adductor magnus mm, and supplies adductor magnus m.

Back 13

posterior branch

Front 14

the _____________ n. ( - ) supplies the pectineus m.

Back 14

femoral n. (L2-L4)

Front 15

the sciatic n. ( - ) branches into two nn:
1) ____________ ( - )
2) ____________ ( - )

Back 15

(L4-S3)
1) tibial n. (L4-S3) (medial)
2) common peroneal n. (L4-S2) (lateral)

Front 16

branches of the sciatic n.:

the ________________ n. ( - )supplies the inferior portion of the adductor magnus, the long head of the biceps femoris, the semimembranosus, and the semitendinosus mm.

Back 16

the tibial n. (L4-S3)

Front 17

branches of the sciatic n.:

the ____________ n. ( - ) supplies the short head of the biceps femoris m.

Back 17

the common peroneal n. (L4-S2)

Front 18

what is the spinal segment of the posterior femoral cutaneous n.?

Back 18

S1-S3

Front 19

12% pf the population has anomalous passage of the sciatic n. though the piriformis m., what do the other 88% of people have?

Back 19

common peroneal n. (not sciatic n.) superior to or piercing through teh piriformis; either way, the piriformis can serve as a site of nerve entrapment

Front 20

the obturator a. branches off of the __________ a.

Back 20

internal iliac a.

Front 21

the obturator a. passes through the _________ and divides into _______ and ___________ branches

Back 21

obturator foramen (canal)

anterior and posterior branches

Front 22

branches of the obturator a.:

the ___________ branch supplies the obturator externus, adductors, pectineus, and gracilis mm.

Back 22

anterior branch

Front 23

branches of the obturator a.:

the __________ branch supplies the mm's of the hip that attach to the ischial tuberosities

Back 23

posterior branch

Front 24

branches of the obturator a.:

the ___________ branch ascends to the head of the femur winthin the ligamentum teres femoris; disruption results in avascular necrosis of the femoral head

Back 24

the acetabular branch

Front 25

the femoral a. is the continuation of the ___________ a. after the inguinal ligament

Back 25

external iliac a.

Front 26

the femoral a. gives off 3 main branches that we should know:

Back 26

1) medial femoral circumflex a.
2) lateral femoral cicumflex a.
3) profunda femoris a.

Front 27

the ________ & _______ aa. off of the femoral a. supply to head and neck of the femur

Back 27

medial and lateral femoral circumflex aa.

Front 28

the _____________ a. comes off of the femoral a. (lateral/medially) gives off four ____________

Back 28

profunda a., laterally

preforating aa

Front 29

Perforating aa:

_______: runs posterior to adductor longus, pierces adductor brevis and magnus

Back 29

1st

Front 30

Perforating aa:

_______: pierces the tendons of the adductor brevis and magnus, may give rise to the nutrient a. of the femur

Back 30

2nd

Front 31

Perforating aa:

_______: arises inferior to adductor brevis and pierces adductor magnus

Back 31

3rd

Front 32

Perforating aa:

_______: terminal branch of profunda femoris a.; pierces adductor magnus; anastomoses with upper branches of the popliteal a.

Back 32

4th

Front 33

the _____________ a. supplies the adductor and hamstring mm

Back 33

profunda femoris a.

Front 34

the _____________ canal (________'s) is a fascial tunnel between adductor magnus and vastus medialis; contains the femoral a. & v., descendign genicular a. & v., and the saphenous n.; the femoral a. changes it's name to the popliteal a. at the distal end of the canal

Back 34

adductor canal (Hunter's canal)

Front 35

the ___________ v. is the largest superficial v. in the thigh; it ascends to the medial malleolus, passes posterior to the medial condyle of the femur, passes through the fascia lata and empties into the femoral vein

Back 35

the great saphenous v.

Front 36

the _________ fossa is on the posterior aspect of the knee

Back 36

the popliteal fossa

Front 37

name the boundaries of the popliteal fossa:

superolateral:
superomedial:
inferior:
floor:

Back 37

-superolateral: biceps femoris m.
-superomedial: semimembranous and semitendinosus mm.
-inferior: medial and lateral heads of the gastrocnemius m
-floor: popliteal fossa of femur, oblique popliteal ligament, popliteus m.

Front 38

name the big a, v, and 2 nn present in the popliteal fossa

Back 38

a: popliteal a.
v: popliteal v.
n: tibial n. (medially)
common peroneal n. (laterally)

Front 39

the popliteal a. gives of genicular branches deep to the mm.; name these 5 arteries

Back 39

medial and lateral superior genicular, middle genicular, medial and lateral inferior genicular aa.

Front 40

the 5 genicular a. anastomose with the 3 "anastomosing aa" to supplly circulation around the knee; what are the 3 aa and their origins and directions they enter the knee area?

Back 40

1) descending genicular a. (from femoral a.)- superomedially
2) descending branch of lateral femoral circumflex (from profunda femoris a.)- superolaterally
3) anterior tibial recurrent branch of anterior tibial a. (from femoral a.)-inferolaterally

Front 41

the ___________ v. is the termination of the small saphenous v.

Back 41

popliteal v.

Front 42

sciatic n. branches:

the _______________ n. ( - ) supplies mm of posterior thigh and leg; gives off medial sural cutaneous n. proximal to gastrocnemius m.

Back 42

tibial s. (L4-S3)

Front 43

sciatic n. branches:

the _______________ n. ( - ) descends on the medial border of biceps femoris m., gives off the lateral sural cutaneous n., communicating peroneal n., becomes superificial and deep peroneal nn at the fibular head

Back 43

common peroneal n.

Front 44

the ____________ m. "unlocks" the knee joint

Back 44

popliteus m.

Front 45

severe hypertensor injuries injure was v, a, and n. and lig?

Back 45

patellar lig.
popliteal a. & v.
tibial n,

Front 46

Gracilis m.

OIAN

Back 46

O: pubic ramus
I: Superior part of the medial tibia (pes anserinus)
A: Adduct thigh, flex leg, medially rotate thigh
N: Obturator n. (L2-L4)

Front 47

Pectineus m.

OIAN

Back 47

O: pubis
I: pectineal line
A: Adducts and assists in flexion of the thigh
N: Femoral n. (L2-L4)
(some branches from the obturator n., (L2-L4))

Front 48

Obturator externus m.

OIAN

Back 48

O: obturator foramen
I: Trochanteric fossa of femur
A: Lateral rotation of thigh
N: Obturator n. (L2-L4)

Front 49

Adductor Brevis m.

OIAN

Back 49

O: pubis
I: Pectineal line of femur
A: Adducts thigh
N: Obturator n. (L2-L4)

Front 50

Adductor Longus m.

OIAN

Back 50

O: pubis
I: middle third of linea aspera
A: Adducts thigh
N: Obturator n. (L2-L4)

Front 51

Adductor Magnus m.

OIAN

Back 51

O:pubic ramus, ischial ramus and tuberosity
I: Gluteal tuberosity, linea apera, medial supracondylar line, adductor tubercule
A: Adducts the thigh, flexes and extends the thigh
N: Obturator n. (L2-L4)
(Tibial n.)

Front 52

Biceps femoris m.

OIAN

Back 52

O: Long head: ischial tuberosity
Short head: linea aspera
I: head of the fibula
A: Flexes the leg, long head also extends the thigh
N: Long head: Tibial n. (L4-S3)
Short head: Common peroneal n. (L4-S2)

Front 53

Semimembranosus m.

OIAN

Back 53

O:Ischial tuberosity
I: Medial condyle of tibia (posterior)
A: Flexes leg, extends thigh
N: Tibial n. (L4-S3)

Front 54

Semitendinosus m.

OIAN

Back 54

O: Ischial tuberosity
I: Medial surface of tibia (pes anserinus)
A: Flexes leg, extends thigh
N: Tibial n. (L4-S3)

Front 55

Popliteus m.

OIAN

Back 55

O: Lateral femoral condyle
I: Popliteal line of tibil
A: Flexes andmedially rotates leg to “unlock” knee
N: Tibial n. (L4-S3)

Front 56

Tensor Fascia Lata m.

OIAN

Back 56

O: ASIS, anterior 1/3 of iliac crest
I: Iliotibial tract
A: Abducts and medially rotates thigh
N: Superior gluteal n. (L4-S1)