Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

6. MSK > Lower Limb Muscles of the Gluteal Region > Flashcards

Lower Limb Muscles of the Gluteal Region Flashcards

1
Q

What are the two groups of muscles in the gluteal region?

A

Superficial abductor and extenders, deep lateral rotators.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the main role of the superficial abductors and extenders of the gluteal region?

A

Abduct and extend the lower limb.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the proximal attachments of the gluteus maximus?

A

Ilium posterior to posterior gluteal line, dorsal surface of sacrum and coccyx, sacrotuberous ligament.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the distal attachments of the gluteus maximus?

A

Most fibers end in iliotibial tract, which inserts into lateral condyle of tibia, some fibers insert on gluteal tuberosity.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the gluteus maximus innervated by?

A

Inferior gluteal nerve (L5, S1, S2).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the arterial supply to the gluteus maximus?

A

Superior gluteal artery, inferior gluteal artery.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the action of the gluteus maximus?

A

Extends thigh, especially from flexed position, and assists in its lateral rotation, steadies thigh and assists in rising from sitting position.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the proximal attachments of the gluteus medius?

A

External surface of ilium between anterior and posterior gluteal lines.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the distal attachments of the gluteus medius?

A

Lateral surface of trochanter of femur.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the gluteus medius innervated by?

A

Superior gluteal nerve (L5, S1).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the arterial supply to the gluteus medius?

A

Superior gluteal artery.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the action of the gluteus medius?

A

Abduct and medially rotate thigh, keep pelvis level when ipsilateral limb is weight-bearing and advance opposite side during its swing phase.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the proximal attachments of the gluteus minimis?

A

External surface of ilium between anterior and inferior gluteal lines.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are the distal attachments of the gluteus minimis?

A

Anterior surface of greater trochanter of femur.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the gluteus minimis innervated by?

A

Superior gluteal nerve (L5, S1).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the arterial supply to the gluteus minimis?

A

Superior gluteal artery.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the action of the gluteus minimis?

A

Abduct and medially rotate thigh, keep pelvis level when ipsilateral limb is weight-bearing and advance opposite side suring its swing phase.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What are the proximal attachments of the tensor fascia lata?

A

Anterior superior iliac spine, anterior part of iliac crest.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What are the distal attachments of the tensor fascia lata?

A

Iliotibial tract, which attaches to lateral condyle of tibia.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is the tensor fascia lata innervated by?

A

Superior gluteal nerve (L5, S1).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the arterial supply to the tensor fascia lata?

A

Superior gluteal artery.

22
Q

What is the action of the tensor fascia lata?

A

Abduct and medially rotate thigh, keep pelvis level when ipsilateral limb is weight-bearing and advance opposite side during its swing phase.

23
Q

What are some walking complications from damage to the superior gluteal nerve?

A

It innervates the gluteus medius and minimis that contract to prevent the pelvis dropping on one side whilst walking. If the nerve is damaged, these muscles are paralysed so the pelvis becomes unsteady - Trendelenberg sign.

24
Q

What is Trendelenberg sign?

A

The pelvic drop will occur on the unsupported leg in walking. Seen by looking for the level of the iliac crests on both sides.

25
Q

What is the main role of the deep muscles of the gluteal region?

A

Laterally rotate the lower limb and stabilises the hip joint by pulling the femoral head into the acetabulum of the pelvis.

26
Q

What are the proximal attachments of the piriformis?

A

Anterior surface of sacrum, sacrotuberous ligament.

27
Q

What are the distal attachments of the piriformis?

A

Superior border of greater trochanter of femur.

28
Q

What is the piriformis innervated by?

A

Branches of anterior rami of (S1, S2).

29
Q

What is the arterial supply to the piriformis?

A

Superior gluteal artery, inferior gluteal artery, internal pudendal artery.

30
Q

What is the action of the piriformis?

A

Laterally rotate and extended thigh and abduct flexed thigh, steady femoral head in acetabulum.

31
Q

What are the proximal attachments of the obturator internus?

A

Pelvic surface of obturator membrane and surrounding bone.

32
Q

What are the distal attachments of the obturator internus?

A

Medial surface of greater trochanter of femur.

33
Q

What is the obturator internus innervated by?

A

Nerve to obturator internus (L5, S1).

34
Q

What is the arterial supply to the obturator internus?

A

Obturator artery.

35
Q

What is the action of the obturator internus?

A

Laterally rotate extended thigh and abduct flexed thigh, steady femoral head in acetabulum.

36
Q

What are the proximal attachments of the superior gemelli?

A

Ischial spine.

37
Q

What are the distal attachments of the superior gemelli?

A

Medial surface of greater trochanter of femur.

38
Q

What is the superior gemelli innervated by?

A

Nerve to obturator internus (L5, S1).

39
Q

What is the arterial supply to the superior gemelli?

A

Inferior gluteal artery.

40
Q

What is the action of the superior gemelli?

A

Laterally rotate extended thigh and abduct flexed thigh, steady femoral head in acetabulum.

41
Q

What are the proximal attachments of the inferior gemelli?

A

Ischial tuberosity.

42
Q

What are the distal attachments of the inferior gemelli?

A

Medial surface of great trochanter of femur.

43
Q

What is the inferior gemelli innervated by?

A

Nerve to quadratus femoris (L5, S1).

44
Q

What is the arterial supply to the inferior gemelli?

A

Inferior gluteal artery.

45
Q

What is the action of the inferior gemelli?

A

Laterally rotate extended thigh and abduct flexed thigh, steady femoral head in acetabulum.

46
Q

What are the proximal attachments of the quadratus femoris?

A

Lateral border of ischial tuberosity.

47
Q

What are the distal attachments of the quadratus femoris?

A

Quadrate on intertrochanteric crest of femur and area inferior to it.

48
Q

What is the quadratus femoris innervated by?

A

Nerve to quadratus femoris (L5, S1).

49
Q

What is the arterial supply to the quadratus femoris?

A

Inferior gluteal artery.

50
Q

What is the action of the quadratus femoris?

A

Laterally rotate thigh, steading femoral head in acetabulum.

6. MSK (30 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions