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(M) MSK Anatomy of the Lower Limb > Gluteal Region > Flashcards

Flashcards in Gluteal Region Deck (34)
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1

name the muscles of the superficial muscle group

- gluteus maximus
- gluteus medius
- gluteus minimus
- tensor fascia latae

2

what are the actions of the superficial muscle group

- extensors
- abductors
- medial rotators of the thigh (gluteus media and minimus)
- lateral rotators of the thigh (gluteus maximus)

3

what is the function of the tensor fascia latae

tenses the fascia latae and helps tense the iliotibial tract

4

what nerve innervates the gluteus maximus

inferior gluteal nerve

5

what nerve innervates the gluteus medius and minimus

superior gluteal nerve

6

spinal level of inferior gluteal nerve

L5-S2

7

spinal level of superior gluteal nerve

L4, 5 and S1

8

what does Trendelenburg's Test show

pathology of the superior gluteal nerve

9

how to you perform Trendelenberg's Test

stand on one leg, the pelvis will tilt down on the unsupported leg as the gluteus medius and minimus are no longer supporting the pelvis

10

name the muscles of the deep muscle group

- piniformis
- obturator internus
- gemelli
- quadratus femoris

11

what are the actions of the deep muscle group

- lateral rotators of the thigh
- hip stabilisers

12

what nerves innervate the muscles of the deep group
- what plexus

- piriformis - anterior ramus of S1 and 2
- superior gemelli - nerve to obturator internus
- inferior gemelli - nerve to quadratus femoris
- obturator internus - nerve to obturator internus
- quadratus femoris - nerve to quadratus femoris

(sacral plexus)

13

what foramen do most nerves and vessels in the pelvis (a) and perineum (b) pass through

a. greater sciatic foramen
b. lesser sciatic foramen

14

what forms the sciatic foramen

sacrotuberous and sacrospinous ligaments

15

what are foramen without ligaments called

knotches

16

spinal level of the sciatic nerve

L4-S3

17

where does the sciatic nerve supply and its branches supply

posterior thigh, all leg and foot muscles and most of the skin

18

name the branches of the sciatic nerve

tibial and common fibular

19

spinal level of the pudendal nerve

S2-S4

20

where does the pudendal nerve supply (mnemonic)

perineum
S2, 3, 4 keeps pelvis and penis off the floor

21

spinal level of the posterior cutaneous nerve of the thigh

S1-S3

22

where does the posterior cutaneous nerve of the thigh supply

skin over posterior thigh, popliteal fossa, lateral perineum and upper medial thigh

23

where does the sciatic nerve usually exit (a) and where is it in the sciatic foramen compared to other structures (b)

(a) inferior to the piriformis
(b) most lateral

24

what is the sciatic nerve's blood supply called

artery to the sciatic nerve

25

where does the sciatic nerve normally branch

distal 1/3 of the thigh

26

describe the two branches of the sciatic nerve

tibial - larger and medial
fibular - smaller and lateral

27

where does the gluteus maximus attach to

iliac crest, sacrum, sacrotuberous ligament and coccyx proximally
iliotibial tract and gluteal tuberosity of the femur distally

28

where do the gluteus minimus and medius attach to

gluteal aspect of the ilium and anterolateral aspect of the greater trochanter of the femur

29

what does the inferior gluteal NVB contain, where is it located and supply

contains the inferior gluteal artery, vein and nerve, located deep to the gluteus maximus and supplies the gluteus maximus

30

what does the superior gluteal NVB contain, where is it located and supply

contains the superior gluteal artery, vein and nerve, located deep to the gluteus medius and supplies the gluteus medius and minimus