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Anatomy > Lateral rotator group > Flashcards

Lateral rotator group Flashcards

1
Q

piriformis origin

A
  • anterior surface of 2nd to 4th sacral segments

- superior margin of greater sciatic notch and sacrotuberous ligament

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2
Q

piriformis insertion

A

superior border of greater trochanter of femur

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3
Q

piriformis innervation

A

nerve to piriformis

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4
Q

piriformis blood supply

A

superior and inferior gluteal arteries

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5
Q

piriformis action

A
  • laterally rotate extended thigh and abduct flexed thigh; steady femoral head in acetabulum
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6
Q

gemellus superior origin

A

Ischial spine

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7
Q

gemellus superior insertion

A

medial surface of greater trochanter of femur

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8
Q

gemellus superior nerve

A

nerve to orbturator internus

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9
Q

gemellus superior blood supply

A

inferior gluteal artery

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10
Q

gemellus superior action

A
  • laterally rotate extended thigh and abduct flexed thigh

- steady femoral head in acetabulum

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11
Q

obturator internus origin

A

pelvic surface of ilium and ischium, obturator membrane

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12
Q

obturator internus insertion

A

medial surface of greater trochantor of femur

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13
Q

obturator internus nerve

A

nerve to obturator internus

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14
Q

obturator internus action

A
  • laterally rotate extended thigh, and abduct flexed thigh

- steady femoral head in acetabulum

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15
Q

obturator internus blood supply

A

inferior gluteal artery

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16
Q

gemellus inferior origin

A

ischial tuberosity

17
Q

gemellus inferior insertion

A

medial surface of greater trochanter of femur

18
Q

gemellus inferior nerve

A

nerve to quadratus femoris

19
Q

gemellus inferior action

A
  • laterally rotate extended thigh, and abduct flexed thigh

- steady femoral head in acetabulum

20
Q

gemellus inferior blood supply

A

inferior gluteal artery

21
Q

obturator externus origin

A

margins of the obturator foramen and obturator membrane

22
Q

obturator externus insertion

A

trochanteric fossa of femur

23
Q

obturator externus nerve

A

obturator nerve

24
Q

obturator externus action

A

laterally rotates thigh

steadies head of femur in acetabulum

25
Q

obturator externus blood supply

A

obturator artery

26
Q

quadratus femoris origin

A

lateral border of ischial tuberosity

27
Q

quadratus femoris insertion

A

quadrate tubercle on intertrochanteric crest of femur

28
Q

quadratus femoris nerve

A

nerve to quadratus femoris

29
Q

quadratus femoris action

A

laterally rotates thigh and steadies head of femur in acetabulum

30
Q

quadratus femoris bs

A

inferior gluteal artery

Anatomy (22 decks)

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