Gluteal region Flashcards

1
Q

Attachments of gluteus maximus

A

ilium posterior to gluteal line, dorsal sacrum and coccyx, sacrotuberus ligament
iliotibial tract to the lateral codyle of tibia, gluteal tuberosity of femur

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2
Q

Attachments of gluteus medius

A

Ilium between ant/post gluteal lines

lat greater trochanter of femur

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3
Q

Attachments of gluteus minimus

A

Ilium between ant/post gluteal lines

ant greater trochanter of femur

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4
Q

Nerve supply of gluteus maximus

A

inferior gluteal (L5-S2)

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5
Q

Nerve supply of gluteus medius

A

Superior gluteal (L4-S1)

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6
Q

Nerve supply of gluteus minimus

A

Superior gluteal (L4-S1)

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7
Q

Action of Gluteus maximus

A

Extends thigh
assists in lateral rotation
steadies during rising from sitting
some extension of knee through iliotibial tract

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8
Q

Action of Gluteus medius

A

Abduction of thigh

Medial rotation of thigh

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9
Q

Action of Gluteus minimus

A

Abduction of thigh

Medial rotation of thigh

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10
Q

What is the iliotibial tract

A

Aponeurosis of tensor fasciae latae and gluteus maximus
from iliac tubercle to anterolateral tibial tubercle
allows TFL to act as abductor, medial rotator, flex of thigh
TFL and GM can support extension of knee

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11
Q

What are the attachments of piriformis

A

Ant S2-4, superior greater sciatic notch, sacrotuberous ligament
passes through greater sciatic foramen
superior border of greater trochanter of femur

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12
Q

Where is it safe to perform IM injections to avoid damage to sciatic nerve

A

Superolateral quadrant

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13
Q

What leaves through greater sciatic foramen superior to piriformis?

A

Superior gluteal nerves/ vessels

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14
Q

What leaves through the greater sciatic foramen inferior to piriformis

A
Post cutaneous nerve of thigh
Inferior gluteal nerve/ vessels
Nerve to quadratus femoris (L5-S1) 
Pudendal nerve
Internal pudendal vessels
Nerve to obturator internus (L5-S1)
Sciatic nerve
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15
Q

What structures pass through the lesser sciatic foramen?

A
Pudendal nerve (leaves gluteal region)
internal pudendal vessels
obturator internus
nerve to obturator internus
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16
Q

What are the attachments of obturator internus

A

Pelvic surface of ilium and ischium, obturator membrane
through lesser sciatic foramen
medial greater trochanter of head of femur

17
Q

What are the actions of obturator internus?

A

lateral rotation of extended thigh
abduction of flexed thigh
hold femoral head in acetabulum

18
Q

What are the attachments of the gemelli?

A

Superior- ischial spine
inferior- iscial tuberosity
medial greater trochanter of head of femur

19
Q

What are the actions of the gemelli?

A

lateral rotation of extended thigh
abduction of flexed thigh
hold femoral head in acetabulum

20
Q

What are the attachments of quadratus femoris?

A

lateral border of ischial tuberosity

quadrate tubercle on intertrochantric crest

21
Q

What is the nerve supply to the gemelli?

A

Superior- nerve to obturator internus, L5/S1

inferior- nerve to quadratus femoris, L5/S1

22
Q

What are the actions of quadratus femoris?

A

lateral rotation of thigh

steadies head of femur in acetabulum