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BMS172 - anatomy lower limb > Hip Muscles Attachments, Actions, Innervations > Flashcards

Hip Muscles Attachments, Actions, Innervations Flashcards

1
Q

Psoas Major

Attachments

A

1) lateral aspect bodies of T12-L5,
transverse processes of L1-L5 and
intervertebral discs

2) lesser trochanter

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2
Q

Psoas Major

Actions

A

flexion of hip

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3
Q

Psoas Major

Innervation

A

ventral rami of L1, L2, L3

L1 & L2 are main suppliers

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4
Q

Iliacus Muscle

Attachments

A

1) Iliac Crest,
Iliac fossa,
ala of sacrum
anterior sacroiliac ligaments

2) lesser trochanter

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5
Q

Iliacus

Actions

A
  • hip flexion, stabilisation of hip joint

* iliopsoas is active in quiet standing (resists hyperextension when standing)

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6
Q

Iliacus

Innervation

A

femoral nerve
L2, L3
(L2 main supplier)

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7
Q

Psoas Minor

Attachment

A

1) Lateral aspect bodies of T12-L1
and intervertebral disc

2). pecten and iliopubic
eminence

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8
Q

Psoas Minor

Action

A

Stabilisation of the thigh at the hip

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9
Q

Psoas Minor

Innervation

A

Ventral Rami of L1 and L2

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10
Q

What percentage of people don’t have a Psoas Minor?

A

40%

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11
Q

Gluteus Maximus

Attachments

A

1) Posterior ilium,
dorsal surface of sacrum and
coccyx,
sacrotuberous ligament

2) gluteal tuberosity and iliotibial tract (lateral condyle of tibia)

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12
Q

Gluteus Maximus

Action

A

Extension and lateral rotation of the thigh at the hip

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13
Q

Gluteus Maximus

Innervation

A

Inferior Gluteal Nerve

L5, S1, S2 (S1 & S2 main suppliers)

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14
Q

Gluteus Medius

Attachment

A

1) External iliac surface between anterior and posterior gluteal lines
2) lateral surface of greater trochanter

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15
Q

Gluteus Medius

Action

A

Abduct and medially rotates thigh

maintains stability of pelvis during gait

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16
Q

Gluteus Medius

Innervation

A

Superior gluteal nerve

L5, S1 (L5 main supplier)

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17
Q

Gluteus Minimus

Attachment

A

1) External iliac surface between anterior and inferior gluteal lines
2) Anterior aspect of greater trochanter

18
Q

Gluteus Minimus

Action

A

Abducts and medially rotates thigh

Maintain stability of pelvis during gait

19
Q

Gluteus Minimus

Innervation

A

Superior Gluteal Nerve

L5, S1 (L5 main supplier)

20
Q

Tensor Fascia Lata

Attachment

A

1) ASIS and anterior iliac crest

2) Iliotibial tract (lateral condyle of tibia)

21
Q

Tensor Fascia Lata

Action

A

Abducts and medially rotates thigh

flexes thigh

22
Q

Tensor Fascia Lata

Innervation

A

Superior Gluteal Nerve

L5, S1 (L5 main supplier)

23
Q

Piriformis

Attachment

A

1) Anterior sacral surface and sacrotuberous ligament

2) Superior border of greater trochanter

24
Q

Piriformis

Action

A

Laterally rotates extended thigh
abducts flexed thigh
maintains apposition of the femoral head and acetabulum

25
Q

Piriformis

Innervation

A

Anterior Rami

S1, S2 (S1 main supplier)

26
Q

Obturator Internus

Attachment

A

1) Internal surface of obturator foramen & membrane

2) medial surface of greater trochanter

27
Q

Obturator Internus

Action

A

laterally rotates extended thigh

abducts flexed femur

maintains apposition of head of femur and acetabulum

28
Q

Obturator Internus

Innervation

A

nerve to obturator internus

L5, S1 (S1 main supplier)

29
Q

Gemellus Superior

Attachments

A

1) Ischial Spine

2) Medial surface of greater trochanter

30
Q

Gemellus Superior

Action

A

Laterally rotates extended thigh

abducts flexed thigh

maintains apposition of head of femur and acetabulum

31
Q

Gemellus Superior

Innervation

A

Nerve to obturator internus

L5, S1 (S1 main supplier)

32
Q

Gemellus Inferior

Attachments

A

1) Ischial Tuberosity

2) Medial surface of greater trochanter

33
Q

Gemellus Inferior

Action

A

Laterally rotates extended thigh

abducts flexed thigh

maintains apposition of head of femur and acetabulum

34
Q

Gemellus Inferior

Innervation

A

Nerve to quadrates femoris

L5, S1

35
Q

Obturator Externus

Attachements

A

1) Margins of obturator foramen and membrane

2) trochanteric fossa

36
Q

Obturator Externus

Action

A

Laterally rotates and adducts thigh

maintains apposition of head of femur and acetabulum

37
Q

Obturator Externus

Innervation

A

Obturator nerve

L3, L4 (L4 main supplier)

38
Q

Quadratus Femoris

Attachment

A

1) Lateral Border of ischial tuberosity

2) Quadrate tubercle (intertrochanteric crest)

39
Q

Quadratus Femoris

Action

A

Laterally rotates thigh

Maintains apposition of the head of the femur and acetabulum

40
Q

Quadratus Femoris

Innervation

A

Nerve to quadratus femoris

L5, S1

BMS172 - anatomy lower limb (13 decks)

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