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Anatomy > 14: Musculo-neuro-vascular systems of gluteal region > Flashcards

14: Musculo-neuro-vascular systems of gluteal region Flashcards

1
Q

Origin of gluteus medius

A

External iliac surface between anterior and posterior gluteal lines

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2
Q

Insertion of gluteus medius

A

Lateral surface of greater trochanter

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3
Q

innervation of gluteus medius

A

Superior gluteal nerve ( L5,S1)

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4
Q

Actions of gluteus medius

A

*Abducts femur at hip joint
*Internally rotates femur at hip joint
*Stabilises pelvis in coronal plane

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5
Q

Origin of gluteus minimus

A

External iliac surface between anterior and inferior gluteal lines

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6
Q

Insertion of gluteus minimus

A

Anterior surface of greater trochanter

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7
Q

Innervation of gluteus minimus

A

Superior gluteal nerve ( L5,S1)

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8
Q

Actions of gluteus minimus

A

*Abducts femur at hip joint
*Internally rotates femur at hip joint
*Stabilises pelvis in coronal plane

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9
Q

Weakness of hip abductors

A

Trendelenburg sign

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10
Q

Tendelenburg’s gait

A

When standing on one leg, hip abductors are unable to counteract gravity
Opposite side of pelvis tilts inferiorly
Patient leans to the same side as weak hip abductors

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11
Q

Tensor fasciae Latae origin

A

ASIS + Anterior iliac crest

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12
Q

Tensor fasciae Latae insertion

A

Iliotibial tract

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13
Q

Tensor fasciae Latae innervation

A

Superior gluteal nerve (L5 - S1)

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14
Q

Actions of Tensor fasciae Latae (3)

A

Abducts, flexes + internally rotates thigh at hip joint
Tightens iliotibial tract (stabilizes knee while leg is extended)
Keeps pelvis level when standing on ipsilateral limb

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15
Q

Actions of tensor fasciae latae

A

Abducts, flexes, internally rotates thigh at hip joint
Tightens iliotibial tract which stabilizes knee while leg is extended
Keeps pelvis level when standing on ipsilateral limb

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16
Q

Origin of piriformis

A

Anterior surface of sacrum
Sacrotuberous ligament

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17
Q

Insertion of piriformis

A

Exits pelvis through greater sciatic foremen
Superior border of greater trochanter

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18
Q

Innervation of piriformis (S1/S2)

A

Nerve to piriformis (S1/S2)

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19
Q

Actions of piriformis

A

Externally rotates extended thigh
Abducts flexed thigh
Stabilizes femoral head in acetabulum

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20
Q

Origin of superior gemellus

A

Ischial spine

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21
Q

Insertion of superior gemellus

A

Medial surface of greater trochanter of femur

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22
Q

Innervation of superior gemellus

A

Nerve to obturator internus (L5,S1)

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23
Q
A
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24
Q

Origin of piriformis

A

Anterior surface of sacrum
Sacrotuberous ligament

25
Q

Insertion of piriformis

A

Exits pelvis through greater sciatic foramen
Superior border of greater trochanter

26
Q

Innervation of piriformis

A

Nerve to piriformis (s1/s2)

27
Q

Actions of piriformis (3)

A

Externally rotates an extended thigh
Abducts a flexed thigh
Stabilizes femoral head in acetabulum

28
Q

Origin of superior gemellus

A

Ischial spine

29
Q

Insertion of superior gemellus

A

Medial surface of greater trochanter of femur

30
Q

Innervation of superior gemellus

A

Nerve to obturator internus (L5,S1)

31
Q

Actions of superior gemellus (3)

A

Externally rotates an extended thigh
Abducts a flexed thigh
Stabilizes femoral head in acetabulum

32
Q

Obturator internus origin

A

Inner surface of obturator membrane and its bony boundaries

33
Q

Muscles of triceps coxae

A

Obturator internus
Superior gemellus
Inferior gemellus

34
Q

Obturator internus insertion

A

Medial surface of greater trochanter of femur

35
Q

Obturator internus innervation

A

Nerve to Obturator internus (L5,S1)

36
Q

Actions of obturator internus

A

Externally rotates an extended thigh
Abducts a flexed thigh
Stabilizes femoral head in acetabulum

37
Q

Origin of inferior gemellus

A

Ischial tuberosity

38
Q

Insertion of inferior gemellus

A

Medial surface of greater trochanter of femur

39
Q

Innervation of inferior gemellus

A

Nerve to quadratus femoris

40
Q

Actions of inferior gemellus

A

Externally rotates an extended thigh
Abducts a flexed thigh
Stabilizes femoral head in acetabulum

41
Q

Origin of quadratus femoris

A

Lateral border of ischial tuberosity

42
Q

Insertion of quadratus femoris

A

Quadrate tubercle on intertrochanteric crest of femur

43
Q

Innervation of quadratus femoris

A

Nerve to quadratus femoris

44
Q

Actions of quadratus femoris

A

External rotation of thigh
Stabilizes femoral head in acetabulum

45
Q

What are the cutaneous nerves of the gluteal region

A

Superior, middle and inferior clunial nerves
+ lateral branch of the iliohypogastric nerve

46
Q

What cutaneous nerve supplies part of the lateral buttocks

A

lateral branch of the iliohypogastric nerve

47
Q

What is sciatica
What are the symptoms
Treatment

A

Sciatic nerve impingement
Shooting pain down back of leg
Rest, anti-inflammatories, muscle relaxants

48
Q

Sciatic nerve splits into…. and…. before exiting…..

A

Tibial nerve
Fibula nerve
The greater sciatic foramen

49
Q

Anatomical variation of sciatic nerve

A

Some people have common fibula nerve passing through piriformis
Some people have common fibula nerve
passing superior to piriformis

50
Q

Internal iliac artery supplies

A

Gluteal region and pelvic region

51
Q

External iliac artery supplies

A

Thigh, leg + foot

52
Q

The sacrospinous ligament runs from…. to….

A

Sacrum
ischial spine

53
Q

Function of sacrospinous ligament

A

Stabilizes sacroiliac joint

54
Q

The sacrotuberous ligament runs from….to….

A

Sacrum
Ischial tuberosity

55
Q

Gluteal muscles

A

Superficial:
Gluteus Maximus
Gluteus medius
Gluteus minimus
Tensor fasciae latae

Deep:
Piriformis
Superior gemellus
Obturator internus
Inferior gemellus
Quadratus Femoris

56
Q

Origin of gluteus Maximus (3)

A

Ilium posterior to posterior gluteal line Lateral part of posterior sacrum-coccyx
Sacrotuberous ligament

57
Q

Insertion of gluteus Maximus

A

Iliotibial tract
Gluteal tuberosity on posterolateral femur

58
Q

Innervation of gluteus Maximus

A

Inferior gluteal nerve

59
Q

Actions of gluteus Maximus

A

Extends thigh
External rotation of femur

Anatomy (17 decks)

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