Gluteal region muscle attachments Flashcards Preview

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Flashcards in Gluteal region muscle attachments Deck (39):
1

What are the deep group muscles of the gluteal region? (4)

1. Piriformis
2. Obturator internus
3. Gemellus superior and inferior
4. Quadratus femoris

2

What are the superficial group of muscles of the gluteal region?

1. Gluteus minimus and medius
2. Gluteus maximus
3. Tensor fasciae latae

3

What is the origin of piriformis?

anterior surface of the sacrum (between anterior sacral foramina)

4

What is the insertion of piriformis?

medial side of the superior border of the greater trochanter of the femur

5

What is the innervation of piriformis?

branches from S1 and S2

6

What is the function of piriformis? (2)

1. laterally rotates the extended femur at hip joint
2. abducts flexed femur flexed at hip joint

7

What is the origin of obturator internus? (2)

1. anterolateral wall of true pelvis

2. deep surface of obturator membrane and surrounding bone

8

What is the insertion of obturator internus?

medial side of greater trochanter of femur

9

What is the innervation to obturator internus?

nerve to obturator internus

10

What is the function of obturator internus? (2)

1. laterally rotates the extended femur at hip joint

2. abducts flexed femur at hip joint

11

What is the origin of gemellus superior?

external surface of ischial spine

12

What is the insertion of gemellus inferior? (2)

1. along length of superior surface of the obturator internus tendon

2. into the medial side of the greater trochanter of femur with obturator internus tendon

13

What is the innervation of gemellus superior?

nerve to obturator internus

14

What is the function of gemellus superior? (2)

1. laterally rotates the extended femur at hip joint
2. abducts flexed femur at hip joint

15

What is the origin of gemellus inferior?

upper aspect of the ischial tuberosity

16

What is the insertion of gemellus inferior? (2)

1. along length of inferior surface of the obturator internus tendon

2. into medial side of the greater trochanter of the femur with obturator internus tendon

17

What is the innervation of gemellus inferior?

nerve to to quadratus femoris

18

What is the function of gemellus inferior?

1. laterally rotates extended femur at hip joint
2. abducts flexed femur at hip joint

19

What is the origin of quadratus femoris?

1. lateral aspect of the ischium just anterior to the ischial tuberosity

20

What is the insertion of quadratus femoris?

quadrate tubercle on the intertrochanteric crest of the proximal femur

21

What is the innervation of quadratus femoris?

nerve to quadratus femoris

22

What is the function of quadratus femoris?

laterally rotates femur at hip joint

23

What is the origin of gluteus minimis?

external surface of ilium between inferior and anterior gluteal lines

24

What is the insertion of gluteus minimis?

linear facet on the anterolateral aspect of the greater trochanter

25

What is the innervation to gluteus minimis?

superior gluteal nerve

26

What is the function of gluteus minimis? (4)

1. abducts femur at hip joint

2. holds pelvis secure over stance leg

3. prevents pelvic drop on the opposite swing side during walking

4. medially rotates thigh

27

What is the origin of gluteus medius?

external surface of ilium between anterior and posterior gluteal lines

28

What is the insertion of gluteus medius?

elongate facet on the lateral surface of the greater trochanter

29

What is the innervation to the gluteus medius?

superior gluteal nerve

30

What is the function of gluteus medius? (4)

1. abducts femur at hip joint

2. holds pelvis secure over leg stance

3. prevents pelvic drop on the opposite swing side during walking

4. medially rotates thigh

31

What is the origin of gluteus maximus? (6)

1. fascia covering gluteus medius

2. external surface of ilium behind posterior gluteal line

3. fascia of erector spinae

4. dorsal surface of lower sacrum

5. lateral margin of coccyx

6. external surface of sacrotuberous ligament

32

What gluteal lines are there? (3)

1. posterior
2. middle/ anterior
3. inferior

33

What is the insertion of gluteus maximus?

1. posterior aspect of iliotibial tract of fascia lata

2. gluteal tuberosity of proximal femur

34

What is the innervation of gluteus maximus?

inferior gluteal nerve

35

What is the function of gluteus maximus? (5) - all the laterals are powerful extensors and abductors

1. powerful extensor of flexed femur at hip joint

2. lateral stabiliser of hip joint

3. lateral stabiliser of knee joint

4. laterally rotates thigh

5. abducts thigh

36

What is the origin of tensor fasciae latae?

lateral aspect of crest of ilium (between ASIS and tubercle of the crest)

most anterior of superficial group muscles

37

What is the insertion of tensor fasciae latae?

iliotibial tract of fascia lata

38

What is the innervation of tensor fasciae latae?

superior gluteal nerve

39

What is the function of tensor fasciae latae?

stabilises the knee in extension