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a10. MSK (Anatomy: Lower Limb) > 1.2.6.2. Muscles of the Medial Compartment of the Thigh > Flashcards

1.2.6.2. Muscles of the Medial Compartment of the Thigh Flashcards

1
Q

What are the Muscles of the Medial Compartment of the Thigh, collectively known as?

A

The Hip Adductors

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2
Q

How many Muscles are in the Medial Compartment of the Thigh?

A

5

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3
Q

What are the Muscles of the Medial Compartment of the Thigh?

A
  1. Adductor Magnus Muscle
  2. Adductor Longus Muscle
  3. Adductor Brevis Muscle
  4. Obturator Externus Muscle
  5. Gracilis Muscle
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4
Q

What are the Muscles of the Medial Compartment of the Thigh innervated by?

A

The Obturator Nerve

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5
Q

Where does the Obturator Nerve arise from?

A

The Lumbar Plexus

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6
Q

What is the Arterial supply of the Muscles of the Medial Compartment of the Thigh?

A

The Obturator Artery

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7
Q

What is the largest Muscle in the Medial Compartment of the Thigh?

A

The Adductor Magnus Muscle

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8
Q

Where does the Adductor Magnus Muscle lie, in relation to the other Muscles of the Medial Compartment of the Thigh?

A

It lies Posteriorly

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9
Q

What 2 parts is the Adductor Magnus Muscle divided into?

A
  1. The Adductor part of the Adductor Magnus Muscle
  2. The Hamstring part of the Adductor Magnus Muscle
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10
Q

Where does the Adductor Part of the Adductor Magnus Muscle originate from?

A
  1. Inferior Rami of the Pubis
  2. Rami of the Ischium
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11
Q

Where does the Adductor Part of the Adductor Magnus Muscle attach distally??

A

Linea Aspera of the Femur

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12
Q

Where does the Hamstring Part of the Adductor Magnus Muscle originate from?

A

Ischial tuberosity

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13
Q

Where does the Hamstring Part of the Adductor Magnus Muscle attach distally?

A
  1. Adductor Tubercle of the Femur
  2. Medial Supracondylar Line of the Femur
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14
Q

What is the function of the Adductor Part of the Adductor Magnus Muscle?

A
  1. Adduction of the Hip Joint
  2. Flexion of the Hip Joint
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15
Q

What is the function of the Hamstring Part of the Adductor Magnus Muscle?

A
  1. Adduction of the Hip Joint
  2. Extension of the Hip Joint
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16
Q

What is the innervation of the Adductor Part of the Adductor Magnus Muscle?

A

The Obturator Nerve (L2-L4)

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17
Q

What is the innervation of the Hamstring Part of the Adductor Magnus Muscle?

A

The Tibial Nerve (L4-S3)

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18
Q

How is the Adductor Longus Muscle described?

A

As a long, flat Muscle

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19
Q

What does the Adductor Longus Muscle cover?

A
  1. The Adductor Brevis Muscle
  2. The Adductor Magnus Muscle (partially)
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20
Q

What does the Adductor Longus Muscle form?

A

The Medial Border of the Femoral Triangle

21
Q

Where does the Adductor Longus Muscle originate from?

A

The Pubis

22
Q

What happens to the Adductor Longus Muscle as it travels?

A

It expands into a fan-shape

23
Q

Where does the Adductor Longus Muscle attach distally?

A

Broadly along the Linea Aspera of the Femur

24
Q

What is the function of the Adductor Longus Muscle?

A
  1. Adduction of the Hip Joint
  2. Medial Rotation of the Hip Joint
25
Q

What is the innervation of the Adductor Longus Muscle?

A

The Obturator Nerve (L2-L4)

26
Q

How is the Adductor Brevis Muscle described?

A

A Short Muscle

27
Q

Where is the Adductor Brevis Muscle located?

A

Underneath the Adductor Longus Muscle

28
Q
  1. What does the Adductor Brevis Muscle lie between?
  2. What is the significance of this?
A
  1. a) The Anterior Division of the Obturator Nerve
  2. b) The Posterior Division of the Obturator Nerve
  3. It can be used as an anatomical landmark to identify the branches above
29
Q

Where does the Adductor Brevis Muscle originate from?

A
  1. Body of the Pubis
  2. Inferior Pubic Rami
30
Q

Where does the Adductor Brevis Muscle attach distally?

A

Linea Aspera of the Femur
Note - it attaches Proximally to the distal attachment of the Adductor Longus Muscle

31
Q

What is the function of the Adductor Brevis Muscle?

A

Adduction of the Hip Joint

32
Q

What is the innervation of the Adductor Brevis Muscle?

A

The Obturator Nerve (L2-L4)

33
Q

How large is the Obturator Externus Muscle, in relation to the other Muscles of the Medial Compartment of the Thigh?

A

It is one of the smaller Muscles of the Medial Compartment of the Thigh

34
Q

Where is the Obturator Externus Muscle located, in relation to the other Muscles of the Medial Compartment of the Thigh?

A

It is located most superiorly

35
Q

Where does the Obturator Externus Muscle originate from?

A

Membrane of the Obturator Foramen, and adjacent Bone

36
Q

Where does the Obturator Externus Muscle travel?

A

Under the Neck of the Femur

37
Q

Where does the Obturator Externus Muscle attach distally?

A

Posterior Aspect of the Greater Trochanter

38
Q

What is the function of the Obturator Externus Muscle?

A

Lateral Rotation of the Hip Joint

39
Q

What is the innervation of the Obturator Externus Muscle?

A

The Obturator Nerve (L2-L4)

40
Q

What is the most Superficial Muscle in the Medial Compartment of the Thigh?

A

The Gracilis Muscle

41
Q

What Joints does the Gracilis Muscle cross?

A
  1. The Hip Joint
  2. The Knee Joint
42
Q

Where does the Gracilis Muscle originate from?

A
  1. Inferior Rami of the Pubis
  2. Body of the Pubis
43
Q

How does the Gracilis Muscle descend down the Leg?

A

Almost Vertically

44
Q

Where does the Gracilis Muscle attach distally?

A

Medial Surface of the Tibia

45
Q

What does the Gracilis Muscle attach distally between?

A
  1. Anteriorly - The Tendon of the Sartorius Muscle
  2. Posteriorly - The Tendon of the Semitendinosus Muscle
46
Q

What is the function of the Gracilis Muscle?

A
  1. Adduction of the Hip Joint
  2. Flexion of the Knee Joint
47
Q

What is the innervation of the Gracilis Muscle?

A

The Obturator Nerve (L2-L4)

48
Q

What is the Clinical Significance of the Gracilis Muscle?

A

It is sometimes transplanted into the Hand / Forearm to replace damaged Muscle

a10. MSK (Anatomy: Lower Limb) (21 decks)

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