Gluteal and Posterior Femoral Regions Flashcards Preview

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Flashcards in Gluteal and Posterior Femoral Regions Deck (68):
1

piriformis

attached to the sacrum

2

greater and lesser sciatic notches form what?

foramen because there are ligaments
-sacrotubrerous ligament

-becomes greater and lesser sciatic foramina

3

gluteal region?

superficial and deep layers

4

superficial gluteal muscles?

gluteus maximus
gluteus medius
gluteus minimus
tensor fascia latae

5

attachments of gluteus maximus

origin:
between posterior crest of ilium and posterior gluteal line and sacrotuberous ligament

insertion:
gluteal tuberosity of femur and IT tract

**has distal tendon on IT tract

6

action of gluteus maximus

extension, lateral rotation of thigh

action at ITT with tensor fascia latae stabilizes the knee

important in going up stairs or getting up from a sitting position

7

innervation of gluteus maximus

inferior gluteal nerve

8

attachments of gluteus medius

origin:
ilium between posterior and anterior gluteal lines

insertion:
greater trochanter of femur

9

deltoid of the lower limb

gluteal muscles

10

action of gluteus medius?

abduction of thigh
posterior fibers - laterally rotate thigh (w/ gluteus maximus)
anterior fibers - medially rotate thigh (w/ gluteus minimus)

levels sacral base when opposite limb is unsupported

11

innervation of gluteus medius?

superior gluteal nerve

12

attachments of gluteus minimus?

origin:
ilium between anterior and inferior gluteal lines

insertion:
greater trochanter of femur - anterior surface

13

action of gluteus minimus?

abduction and medial rotation of thigh

acts with gluteus medius in leveling sacral base

14

paralyze the L5

sacral base drops

15

attachment of tensor fascia latae?

origin:
anterior outer portion of iliac crest next to ASIS

insertion:
via IT tract to lateral tibial condyle

16

action of tensor fascia latae?

abducts, flexes and medially rotates thigh
by tensing IT tract maintains knee extended

17

innervation of tensor fascia latae?

superior gluteal nerve

18

muscles of deep gluteal region?

piriformis
gemellus superior
obturator internus
gemellus inferior
quadratus femoris

**lateral rotation

19

tensor fascia latae with straight leg?

flex and medially rotate

20

tensor fascia latae

always working with other muscles

21

attachment of piriformis

origin:
anterior surface of sacrum, lateral to anterior sacral foramina

insertion:
greater trochanter of femur

22

action of piriformis

abduction of thigh, lateral rotation

23

innervation to piriformis?

nerve to piriformis

24

attachments of gemellus superior?

origin:
ischial spine

insertion:
tendon of obturator internus (greater trochanter)

25

action of gemellus superior?

lateral rotation of thigh

26

innervation of gemellus superior?

nerve to obturator internus

27

all to greater trochanter?

gemellus superior and inferior
obturator internus

28

attachments of obturator internus

origin:
internal surface of obturator membrane and margins of oburator foramen

insertion:
greater trochanter

29

action of obturator internus?

lateral rotation and some abduction of thigh

30

innervation of obturator internus?

nerve to obturator internus

31

attachments of gemellus inferior

origin:
ischial tuberosity near margin of lesser sciatic notch

insertion:
tendon of obturator internus (greater trochanter)

32

action of gemellus inferior?

lateral rotation of thigh

33

innervation of gemellus inferior?

nerve to quadratus femoris

34

attachments of quadratus femoris

origin:
ischial tuberosity

insertion:
area midway between trochanter on posterior surface of femur

35

action of quadratus femoris

lateral rotation of thigh

36

innervation of quadratus femoris

nerve to quadratus femoris

37

muscles of posterior femoral compartment?

biceps femoris
semimembranosus
semitendinosus

38

attachment of biceps femoris?

origin:
long head - ischial tuberosity
short head - middle third lateral lip linea aspera of femur

insertion:
lateral condyle of tibia, head of fibula

39

action of biceps femoris?

long head - extends thigh, flexes leg
short head - flexes leg

40

innervation of biceps femoris?

long head - tibial component of sciatic nerve
short head - common fibular nerve

41

attachments of semimembranosus

origin:
ischial tuberosity

insertion:
posterior surface, medal condyle of tibia

42

action of semimembranosus

extends thigh, flexes leg and medially rotates leg when knee flexed

43

attachments of semitendinosus

origin:
ischial tuberosity

insertion:
medial anterior surface of tibia below condyle

44

action of semitendinosus

extends thigh
flexes and medially rotates leg when knee is flexed

45

innervation of semitendinosus

tibial component of sciatic nerve

46

what forms the pes anserinus?

sartorius, gracilis, semitendinosus

same actions on knee
-flexion and medial rotation of tibia when tibia flexed

47

superior gluteal artery

branch of internal iliac artery

passes from pelvic cavity to gluteal area through the greater sciatic foramen superior to piriformis

48

vessels around piriformis?

superior gluteal and inferior gluteal

49

superficial branch of superior gluteal artery?

to gluteus maximus

50

deep branch of superior gluteal artery?

divides into superior and inferior branches
-both travel between gluteus medius and minimus

superior branch - tensor fascia lata fossa
inferior branch - trochanteric fossa

51

inferior gluteal artery?

branch of internal iliac artery

passes to gluteal area from pelvic cavity via greater sciatic foramen INFERIOR to piriformis

52

muscular branch of inferior gluteal artery?

to gluteus maximus and muscles in area of ischial tuberosity

53

largest peripheral nerve in body?

sciatic nerve

54

inferior gluteal artery anastomosis?

branches to cruciate anastomosis

55

branches of inferiour gluteal artery?

muscular, anastomosis branch, branch to sciatic nerve, coccygeal, cutaneous

56

coccygeal branch of inferior gluteal artery?

pierce sacrotuberous ligament to gain gluteus maximus and subcutaneous region over coccyx

57

cutaneous branch of inferior gluteal artery?

accompanies posterior femoral cutaneous nerve

58

vasculature of posterior femoral compartment?

perforating vessels of profunda femoral artery and vein

59

sacral plexus

ventral rami spinal nerves L 4,5 S 1,2,3

motor and cutaneous innervation to lower limb, muscles of pelvus and perineum, and skin of perineum

60

nerves to gluteal area

pass from sacral plexus as neurovasacular bundles to deep side of muscles

61

need to know courses of what?

superior and inferior gluteal and sciatic nerves***

62

superior gluteal nerve

L4,5 S1
originates in sacral plexus
exits pelvis via greater sciatic foramen ABOVE piriformis muscle in company with superior gluteal artery and vein

courses between gluteus medius and minimus

innervates gluteus medius, minimus and tensor fascia latae

63

inferior gluteal nerve?

L5 S1,2
originates from sacral plexus, exits pelvis through greater sciatic foramen ANTERIOR to piriformis in company with sciatic, pudenal, and posterior femoral cutaneous nerves, inferior gluteal and internal pudenal vessels

passes directly into gluteus maximus which it innervates

64

sciatic nerve

L 4,5 S 1,2,3
largest peripheral nerve of body and principal nerve of sacral plexus

passes directly into gluteus maximus which it innervates

exits pelvis through greater sciatic foramen, passing anteriorly and sometimes through substance of piriformis

65

two components of sciatic nerve?

tibial

common fibular

66

tibial nerve?

component of sciatic nerve
-composed of anterior divisions of ventral rami, spinal nerves L4-S3

67

common fibular nerve?

component of sciatic nerve
-composed of posterior divisions of ventral rami, spinal nerves L4-S2

68

sciatic nerve

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