A9 - Muscles of glute and thigh Flashcards

1
Q

What muscles are in the superficial layer of gluteal muscles?

A

Gluteus maximus
Gluteus minimus
Gluteus medius
Tensor fascia latae

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2
Q

What innervates and supplies blood to the superficial gluteal layer?

A

Innervation = superior gluteal nerve to all apart from gluteus maximus, which is inferior gluteal nerve
Blood: internal iliac artery

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3
Q

What is the action of the superficial gluteal muscles?

A

Gluteus medius, minimus and tensor fascia latae: abduction and medial rotation
Gluteus maximus: extension and lateral rotation

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4
Q

What muscles are in the deep gluteal layer?

A

Think ‘PGOGQ’
- Piriformis
- Superior gemelli
- Obturator internus
- Inferior gemelli
- Quadratus femoris

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5
Q

What arteries supply blood to the deep gluteal layer?

A

Internal pudendal and obturator arteries

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6
Q

What are the muscles of the deep gluteal layer innervated by?

A

Nerve to piriformis = piriformis
Nerve to obturator internus = SG and OI
Nerve to quadratus femoris = QF and IG

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7
Q

What is the action of the muscles in the deep gluteal layer?

A

ALL laterally rotate the leg at hip:
- Piriformis, SG, IG and obturator internus = lateral rotation and abduction
- Quadratus femoris = lateral rotation

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8
Q

What muscles are in the anterior compartment of the thigh?

A

Quadriceps femoris = rectus femoris, vastus lateralis, vastus medialis
Sartorius
Pectineus
Iliopsoas = iliacus and psoas major

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9
Q

What is the action of the quadriceps femoris?

A

All extend the knee, the rectus femoris also flexes the thigh at hip

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10
Q

What’s the action of the iliopsoas?

A

Flexes hip

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11
Q

What’s the action of the pectineus?

A

Adduction
Flexor at hip

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12
Q

What’s the action of the sartorius?

A

Hip flexion, knee flexion, lateral rotation
(think about sitting cross-legged, what actions are needed)

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13
Q

What is the innervation and arterial supply to the anterior compartment of the thigh?

A

Innervation= femoral nerve (pectineus also receives some from obturator)
Artery= femoral artery

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14
Q

What muscles are within the medial compartment of the thigh?

A
  • Gracilis
  • Adductor longus
  • Adductor brevis
  • Adductor magnus (hamstring and adductor)
  • Obturator externus
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15
Q

What is the action of the adductor longus, brevis and magnus?

A

Adductor brevis and longus= adduct thigh
Hamstring part of AM = adducts & flexes thigh
Adductor part of AM = adducts & extends thigh

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16
Q

What is the action of gracilis and obturator externus?

A

Gracilis: adductor, flexes leg at knee
Obturator externus: adduction, lateral rotation of thigh

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17
Q

What is the innervation and blood supply to the medial compartment of the thigh?

A

Obturator nerve (except hamstring portion of AM = sciatic nerve)
Obturator artery

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18
Q

What muscles are in the posterior compartment of the thigh?

A

Biceps femoris
Semitendinosus
Semimembranosus

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19
Q

What is the action of the muscles in the posterior compartment of the thigh?

A

ALL: flex leg at knee and extend leg at hip
Biceps femoris: also laterally rotates at hip and knee
Semitendinosus + semimembranosus: also medially rotates at hip and knee

20
Q

What is the innervation and blood supply to the posterior compartment of the leg?

A

Innervation: sciatic (L4-S3)
Arterial: profunda femoris (deep femoral)

21
Q

What muscles attach to the pes aneuris?

A
  • Gracilis
  • Sartorius
  • Semitendinosus
22
Q

What are the attachments of the psoas major?

A

O: Lateral aspects of the lumbar vertebrae (transverse processes, body, discs)
I: lesser trochanter

23
Q

What are the attachments of the ilicus?

A

O: iliac fossa
I: lesser trochanter

24
Q

What are the attachments of the pectineus?

A

O: superior pubic rami
I: Pectineal line of femur (posterior)

25
Q

What are the attachments of vastus lateralis?

A

O: lateral side of proximal femur, some of greater trochanter
I: quadriceps tendon onto patella, which is joined to the tibial tuberosity

26
Q

What are the attachments of vastus medialis?

A

O: proximal medial femur
I: quadriceps tendon - indirectly onto tibial tuberosity

27
Q

What are the attachments of vastus intermedius?

A

O: anterior surface of proximal femur
I: quadriceps tendon

28
Q

What are the attachments of rectus femoris?

A

O: Anterior inferior iliac spine
I: quadriceps tendon

29
Q

What are the attachments of sartorius?

A

O: anterior superior iliac spine
I: medial aspect of proximal tibia

30
Q

What are the attachments of adductor longus?

A

O: Body of pubis
I: middle 1/3 of linear aspera

31
Q

What are the attachments of adductor brevis?

A

O: body of pubis and inferior pubic rami
I: proximal linear aspera

32
Q

What are the attachments of adductor magnus?

A

Hamstring part:
O: ischial tuberosity, I: linear aspera
Adductor part:
O: ischiopubic rami, I: linear aspera and adductor tubercle

33
Q

What are the attachments of obturator externus?

A

O: obturator foramen
I: trochanteric fossa (posterior femur)

34
Q

What are the attachments of gracilis?

A

O: Body of pubis and inferior pubic rami
I: superior part of medial tibia

35
Q

What are the general attachment points of the muscles in the posterior compartment of the leg?

A

Ischiopubic rami to posterior femur

36
Q

What are the attachments of semimembranosus?

A

O: ischial tuberosity
I: medial condyle of tibia

37
Q

What are the attachments of semitendinosus?

A

O: ischial tuberosity
I: medial surface of proximal tibia

38
Q

What are the attachments of rectus femoris?

A

Long head - O: ischial tuberosity
Short head - O: lower aspect of linear aspera and lateral supracondylar ridge
Both insert as rectus femoris tendon onto head of fibula

39
Q

What are the attachments of gluteus minimus?

A

O: Between inferior and anterior gluteal lines of ilium
I: greater trochanter of femur

40
Q

What are the attachments of gluteus medius?

A

O: Between anterior and posterior gluteal lines of ilium
I: Greater trochanter of femur

41
Q

What are the attachments of gluteus maximus?

A

O: ilium behind posterior gluteal lines, sacrum and coccyx
I: gluteal tuberosity on posterior femur and iliotibial tract

42
Q

What are the attachments of tensor fascia lata?

A

O: Anterior iliac crest and ASIS
I: iliotibial tract

43
Q

What are the attachments of piriformis?

A

O: anterior part of sacrum
I: greater trochanter

44
Q

What are the attachments of superior gemellus?

A

O: ischial spine
I: greater trochanter

45
Q

What are the attachments of obturator internus?

A

O: Inside rim of obturator foramen and associated obturator membrane
I: Greater trochanter

46
Q

What are the attachments of inferior gemellus?

A

O: ischial tuberosity
I: Greater trochanter

47
Q

What are the attachments of quadratus femoris?

A

O: ischial tuberosity
I: quadrate tubercle on femur (between the trochanters)