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PHTH 510 > The Glute Muscles (origin, insertion, innervation, action) > Flashcards

The Glute Muscles (origin, insertion, innervation, action) Flashcards

1
Q

What are the superficial muscles of the glute?

A

glute max, glute medius, glute minimus, TFL.

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2
Q

What is the origin of the glute max?

A

The ilium, posterior gluteal line, dorsal surface of the sacrum and coccyx, and sacrotuberous ligament

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3
Q

what is the insertion of the gluteus max?

A

gluteal tuberosity of femur and iliotibial tract

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4
Q

What innervates the gluteus maximus muscle?

A

Inferior gluteal nerve (L5-S2)

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5
Q

What is the main action of the gluteus maximus?

A

Extension and external rotation

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6
Q

What is the origin of the gluteus medius?

A

between anterior and posterior gluteal lines

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7
Q

What is the insertion of the gluteus medius?

A

lateral surface of greater trochanter of femur

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8
Q

What innervates the gluteus medius?

A

Superior gluteal nerve (L4, L5, S1)

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9
Q

what is the main action of the gluteus medius?

A

abducts the femur at the hip joint. It keeps the pelvis level when the ipsilateral limb is weight bearing. The anterior fibers provide internal rotation of the hip.

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10
Q

What is the origin of the TFL

A

ASIS

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11
Q

what is the insertion of the TFL?

A

iliotibial tract of fascia lata

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12
Q

what innervates the TFL?

A

Superior gluteal n. (L4-S1)

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13
Q

what is the main action of the TFL?

A

THE SAME AS THE GLUT MED AND MIN. abducts the femur at the hip joint. It keeps the pelvis level when the ipsilateral limb is weight-bearing. The anterior fibers provide internal rotation of the hip.

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14
Q

What are the deep muscles of the gluteal region?

A

piriformis, superior gemellus, obturator internus, obturator externus, inferior gemellus, quadratus femoris

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15
Q

What is the origin of the piriformis?

A

anterior surface of sacrum between (s1-S4)

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16
Q

What is the insertion of the piriformis?

A

superior aspect of the greater trochanter of the femur

17
Q

what innervates the piriformis?

A

Spinal nerves (L5-S2) nerve to piriformis

18
Q

What is the main action of the piriformis?

A

To externally rotate the extended thigh and abduct the flexed thigh. Steady femoral head in acetabulum.

19
Q

What is a syndrome that arises from the piriformis?

A

Compresses the sciatic nerve which causes pain, tingling, and numbness in the glute area. It is caused by prolonged sitting and running.

20
Q

What is the origin of the obturator internus?

A

internal surface of obturator foramen

21
Q

what is the insertion of the obturator internus?

A

medial surface of greater trochanter

22
Q

What innervates the obturator internus?

A

the spinal nerves from L5-S2 (nerve to obturator internus)

23
Q

What is the main action of the obturator internus?

A

To externally rotate the extended hip and abduct the flexed thigh. Steady femoral head in acetabulum.

24
Q

What is the origin of the obturator externus?

A

external surface of obturator foramen

25
Q

what is the insertion of the obturator externus?

A

trochanteric fossa of femur

26
Q

what innervates the obturator externus?

A

Obturator nerve (L3, L4)

27
Q

what is the main action of the obturator externus?

A

external rotation of the extended hip, abduction of the flexed hip.

28
Q

What is the origin of the superior gemellus?

A

superior ischial spine

29
Q

what is the insertion of the superior and inferior gemellus?

A

medial surface of the greater trochanter of femur

30
Q

what is the origin of the inferior gemellus?

A

ischial tuberosity

31
Q

what innervates the superior and inferior gemellus?

A

spinal nerves L5-S1

32
Q

what is the main action of the superior and inferior gemellus?

A

Externally rotate extended thigh and abduct flexed thigh.

33
Q

What is the origin of the quad femoris?

A

lateral border of ischial tuberosity.

34
Q

what is the insertion of the quad femoris?

A

intertrochanteric crest of femur

35
Q

what innervates the quad femoris?

A

spinal nerves (L5-S1) (nerve to quad femoris)

36
Q

What is the main action of the quad femoris?

A

To externally rotate the hip

37
Q

What is the origin of the glute minimus?

A

Between the inferior and anterior gluteal lines

38
Q

What is the insertion of the glute minimus

A

Anterior aspect of greater trochanter

PHTH 510 (7 decks)

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