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Flashcards in Gluteal Region Deck (24):
1

What passes through the greater sciatic foramen?

-piriformis m.
-superior gluteal n.a.v.
-inferior gluteal n.a.v.
-pudendal n.
-posterior femoral cutaneous n.
-sciatic n.
-n. to obturator internus and quadratus femoris

2

What passes through the lesser sciatic foramen?

-obturator internus t.
-n. to obturator internus
-internal pudendal a.v.
-pudedal n.

3

T/F Extension winds spiraling ll. tightly?

True

4

T/F Flexion unwinds spiraling ll.?

False

5

Hip extension is limited to?

10-20% beyond vertical

6

What are the superficial gluteal muscles?

-gluteus maxims m.
-gluteus medius m.
-gluteus minimus m.

7

Gluteus Maximus

O: Ilium posterior to posterior gluteal line; dorsum of sacrum and coccyx; sacrotuberous l.
I: IT band (tract) and gluteal tuberosity
A: extension of thing from a flexed position; assist with LR
N: Inferior gluteal n. (L5, S1, S2)
B: Superior and inferior gluteal aa.

8

Paralysis of gluteus max would affect what?

-climbing NOT walking on level ground

9

Gluteus Medius

O: Ilium between anterior and posterior gluteal lines
I: lateral surface greater trochanter of femur
A: ABD and MR of thing; keep pelvis level when ipsilateral limb is weight-bearing and advance opposite (unsupported) side during its swing phase
N: Superior gluteal n. (L5, S1)
B: Superior gluteal a.

10

Gluteus minimus

O: ilium between anterior and inferior gluteal lines
I: anterior surface greater trochanter of femur
A: ABD and MR of thigh; keep pelvis level when ipsilateral limb is weight-bearing and advance opposite (unsupported) side during its swing phase N: Superior gluteal n. (L5, S1)
B: Superior gluteal a.

11

Tesnor Fascia Lata

O: ASIS; anterior part of iliac crest
I: IT band
A: flexion of thigh, ABD, MR; helps keep knee extended (tenses IT band)
N: superior gluteal n. (L5, S1)
B: Superior gluteal a.

12

Piriformis m.

O: anterior surface of sacrum; sacrotuberous l.
I: superior border greater trochanter of femur
A: LR of extended thigh; ABD of flexed thigh; steadies femoral head
N: Ventral rami S1, S2
B: superior and inferior gluteal aa.

13

Superior gemellus

O: ischial spine
I: trochanteric fossa of femur via t. of obturator interns
A: LR of extended thigh: ABD of flexed thigh ; steadies femoral head
N: Nerve to obturator internus (L5, S1)
B: inferior gluteal and medial femoral circumflex aa.

14

Obturator Internus

O: pelvic surface of obturator membrane and surrounding bones
I: torchanteric fossa of femur
A: LR of extended thigh; ABD of flexed thigh; steadies femoral head
N: n. to obturator internus (L5, S1)
B: pelvic part - obturator a.
extrapelvic part - medial femoral circumflex a.

15

Inferior Gemellus

O: ischial tuberosity
I: torchanteric fossa via tendon of obturator internus
A: LR of extended thigh; ABD of flexed thigh; steadies femoral head
N: nerve to quadratus femoris (L5, S1)
B: medial femoral circumflex a.

16

Obturator Externus

O: margins of obturator foramen and obturator membrane
I: trochanteric fossa of femur
A: LR of thigh; steadies femoral head
N: posterior division obturator n. (L3, L4)

17

Quadratus Femoris

O: lateral border of ischial tuberosity
I: Quadrate tubercle of femur and area inferior to it
A: LR of thigh; steadies femoral head
N: N. to quadratus femoris (L5, S1)
B: medial femoral circumflex and 1st perforating aa.

18

VPR of superior gluteal n. and what does it supply?

L4-S1, supplies gluteus medius, minims and tensor fascia lata mm.

19

VPR of Inferior gluteal n. and what does it supply?

L5-S2, supplies gluteus maximus m.

20

VPR of Sciatic n. and what does it supply?

L4-S3, doesn't supply anything in the gluteal region

21

VPR of n. to quadrates femurs and what does it supply?

L4-S1, supplies quadratus femurs and inferior gemellus mm.

22

VPR of n. to obturator interns and what does it supply?

L5-S2, supplies obturator interns and superior gemellus mm.

23

VPR of pudendal n. and what does it supply?

S2-4, doesn't supply anything in the gluteal region

24

VPR of clunial nn. and what does it supply?

Superior: DPR of L1-3, supplies skin of superior buttock
Middle: DPR of S1-3, supplies skin over sacrum and adjacent buttock
Inferior from posterior cutaneous n. of thigh, supplies skin over inferior half of buttock