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Musculoskeletal System > Gluteal and Pelvic Region > Flashcards

Gluteal and Pelvic Region Flashcards

1
Q

What is the insertion of the obturator internus?

A

Greater trochanter of femur

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2
Q

What is the innervation of the obturator internus?

A

Nerve to obturator internus

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3
Q

What is the action of obturator internus?

A

Lateral rotation of hip

Abducts flexed femur at hip joint

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4
Q

What is the origin of gemellus superior?

A

Ischial spine

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5
Q

What is the insertion of gemellus superior?

A

Greater trochanter of femur

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6
Q

What is the nerve supply to gemellus superior?

A

Nerve to obturator internus

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7
Q

What is the action of gemellus superior?

A

Lateral rotation of hip

Abducts flexed femur at hip

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8
Q

What is the origin of gemellus inferior?

A

Ischial tuberosity

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9
Q

What is the insertion of gemellus inferior?

A

greater trochanter of femur

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10
Q

What is the nerve supply to gemellus inferior?

A

Nerve to quadratus femoris

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11
Q

What is the action of gemellus inferior?

A

Lateral rotation of hip

Abducts flexed femur at hip

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12
Q

What is the origin of quadratus femoris?

A

lateral ischium

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13
Q

What is the insertion of quadratus femoris?

A

Intertrochanteric crest of femur

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14
Q

What is the nerve supply to quadratus femoris?

A

nerve to quadratus femoris

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15
Q

What is the action of quadratus femoris?

A

lateral rotation of hip

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16
Q

What is the origin of the obturator internus?

A

Antero-lateral pelvis

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17
Q

What is the origin of psoas major?

A

T12-L4

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18
Q

What is the insertion of psoas major?

A

Lesser trochanter of femur

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19
Q

What is the origin of psoas minor?

20
Q

What is the insertion of psoas minor?

A

Iliopectineal eminence of pelvis

21
Q

Which muscle is often absent in the pelvic region?

A

Psoas minor

22
Q

Where is the trochanteric bursa?

A

Situated between gluteus maximus and the greater trochanter

23
Q

Where is the ischiogluteal bursa?

A

Near the ischial tuberosity (sitting down can inflame it)

24
Q

Name the superficial gluteal muscles

A

Gluteus maximus
Gluteus medius
Gluteus minimus

25
Q

What is the origin of gluteus maximus?

A

Iliac crest, sacrum and coccyx

26
Q

What is the insertion of gluteus maximus?

A

Iliotibial tract

27
Q

Which nerve supplies the gluteus maximus?

A

Inferior gluteal nerve

28
Q

What is the arterial supply to gluteus maximus?

A

Superior and inferior gluteal arteries

29
Q

What is the action of gluteus maximus?

A 
Standing up (extends the hip from a flexed position) 
Lateral rotation
30
Q

Where do gluteus medius and minimus both arise?

A

Posterior, lateral ilium

31
Q

Where do gluteus minimus and medius insert?

A

Greater trochanter of femur

32
Q

What are the actions of the gluteus medius and minimus?

A

Medial rotation
Abduction
Stabilise the pelvis when standing on one leg

33
Q

What are the deep muscles of the gluteal region?

A 
Piriformis
Superior gemellus
Inferior gemellus
Obturator internus
Quadratus femoris
34
Q

What is the origin of the piriformis?

A

Anterior sacrum

35
Q

What is the insertion of the piriformis?

A

Greater trochanteric of femur

36
Q

What is the origin of the gemelli?

37
Q

What is the origin of quadratus femoris?

A

Ischial tuberosity

38
Q

What is the insertion of quadratus femoris?

A

Intertrochanteric crest of femur

39
Q

Describe the route of the sciatic nerve

A

Passes posteriorly through the greater sciatic foramen
Passes inferior to piriformis
Passes behind the long head of biceps femoris

40
Q

Where would you perform a dorsogluteal injection?

A

Upper lateral quadrant

Attempt to avoid sciatic nerve damage

41
Q

What is the origin of tensor fascia lata?

A

Anterior iliac crest

42
Q

What is the insertion of tensor fascia lata?

A

iliotibial tract

43
Q

What is the action of tensor fascia lata?

A

Abduction and medial rotation of thigh

44
Q

What is the nerve supply to tensor fascia lata?

A

Superior gluteal nerve

45
Q

Why is the piriformis an important landmark?

A

Divides the gluteal region into an inferior and superior part

46
Q

What is the iliotibial tract?

A

Longitudinal thickening of fascia lata
Strengthened by fibres from gluteus maximus
Extends from iliac tubercle to lateral tibial condyle

Musculoskeletal System (26 decks)

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