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3rd Year - MSK Lower Limb Anatomy > 1.2.5.5. Muscles of Lateral Rotation of the Hip Joint > Flashcards

1.2.5.5. Muscles of Lateral Rotation of the Hip Joint Flashcards

1
Q

What movements can be carried out at the Hip Joint?

A
  1. Flexion
  2. Extension
  3. Abduction
  4. Adduction
  5. Lateral Rotation
  6. Medial Rotation
  7. Circumduction
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2
Q

What are the main Muscles of Lateral Rotation of the Hip Joint?

A
  1. Biceps Femoris Muscle
  2. Gluteus Maximus Muscle
  3. Deep Gluteal Muscles:
  4. a) Piriformis Muscle
  5. b) Obturator Internus Muscle
  6. c) Superior and Inferior Gemelli Muscles
  7. d) Quadratus Femoris Muscle
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3
Q
  1. What is the Biceps Femoris Muscle similar to?

2. Why?

A
  1. Biceps Brachii in the Upper Arm

2. The Muscle has 2 Heads

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4
Q

What are the 2 Heads of the Biceps Femoris Muscle?

A
  1. Long Head of the Biceps Femoris Muscle

2. Short Head of the Biceps Femoris Muscle

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5
Q

Where does the Long Head of the Biceps Femoris Muscle originate from?

A

Ischial Tuberosity of the Pelvis

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6
Q

Where does the Short Head of the Biceps Femoris Muscle originate from?

A

Linea Aspera on the Posterior Surface of the Femur

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7
Q

What do the Long and Short Heads of the Biceps Femoris Muscle form?

A

A single Tendon, the Tendon of the Biceps Femoris Muscle

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8
Q

Where does the Tendon of the Biceps Femoris Muscle attach distally?

A

Head of the Fibula

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9
Q

Where is the Biceps Femoris Muscle located?

A

It is the Lateral-Most Muscle in the Posterior Thigh

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10
Q

Where can the Tendon of the Biceps Femoris Muscle be felt?

A

Laterally at the Posterior Knee Joint

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11
Q

What is the function of the Biceps Femoris Muscle?

A
  1. Flexion of the Leg at the Knee Joint
  2. Extension of the Thigh at the Hip Joint
  3. Lateral Rotation of the Thigh at the Hip Joint
  4. Lateral Rotation of the Leg at the Knee Joint
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12
Q

Do both the Long and Short Heads of the Biceps Femoris Muscle have the same innervation?

A

No

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13
Q

What is the innervation of the Long Head of the Biceps Femoris Muscle?

A

Tibial Part of the Sciatic Nerve

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14
Q

What is the innervation of the Short Head of the Biceps Femoris Muscle?

A

Common Fibular Part of the Sciatic Nerve

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15
Q

Where does the Gluteus Maximus Muscle originate from?

A
  1. Gluteal (Posterior) Surface of the Ilium
  2. Gluteal (Posterior) Surface of the Sacrum
  3. Gluteal (Posterior) Surface of the Coccyx
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16
Q

Where does the Gluteus Maximus Muscle travel?

A

At a 45 degree angle across the Buttocks

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17
Q

Where does the Gluteus Maximus Muscle attach distally?

A
  1. Iliotibial Tract

2. Gluteal Tuberosity of the Femur

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18
Q

What is the significance of the Gluteus Maximus Muscle?

A
  1. It is the largest of the Gluteal Muscles

2. It is the most Superficial of the Gluteal Muscles - forming the shape of the Buttocks

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19
Q

What is the function of the Gluteus Maximus Muscle?

A
  1. It is the main Extensor of the Hip Joint
  2. It assists in Lateral Rotation of the Hip Joint
    Note - It is only used when force is required, e.g. running, climbing, squatting
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20
Q

What is the innervation of the Gluteus Maximus Muscle?

A

The Inferior Gluteal Nerve

21
Q

Where are the Deep Gluteal Muscles located?

A

Underneath the Gluteus Minimus Muscle

22
Q

Where is the Piriformis Muscle located, in relation to the other Deep Gluteal Muscles?

A

It is the most Superior - making it a Key Landmark in the Gluteal Region

23
Q

Where does the Piriformis Muscle originate from?

A

Anterior Surface of the Sacrum

24
Q

Where does the Piriformis Muscle travel?

A

Inferolaterally, through the Greater Sciatic Foramen

25
Q

Where does the Piriformis Muscle attach distally?

A

The Greater Trochanter of the Femur

26
Q

What is the function of the Piriformis Muscle?

A
  1. Lateral Rotation of the Lower Limb at the Hip Joint

2. Abduction of the Lower Limb at the Hip Joint

27
Q

What is the innervation of the Piriformis Muscle?

A

Nerve to the Piriformis Muscle

28
Q

What does the Obturator Internus Muscle form?

A

The Lateral Walls of the Pelvic Cavity

29
Q

Which Muscle can the Obturator Internus Muscle sometimes be considered the same as?

A

Superior and Inferior Gemelli Muscles (Gemelli Muscle)

30
Q

Where does the Obturator Internus Muscle originate from?

A
  1. Pubis at the Obturator Foramen

2. Ischium at the Obturator Foramen

31
Q

Where does the Obturator Internus Muscle travel?

A

Through the Lesser Sciatic Foramen

32
Q

Where does the Obturator Internus Muscle attach distally?

A

The Greater Trochanter of the Femur

33
Q

What is the function of the Obturator Internus Muscle?

A
  1. Lateral Rotation of the Lower Limb at the Hip Joint

2. Abduction of the Lower Limb at the Hip Joint

34
Q

How are the Gemelli Muscles described?

A

2 Narrow, Triangular Muscles

35
Q

What separates the 2 Gemelli Muscles?

A

The Obturator Internus Tendon

36
Q

Where does the Superior Gemelli Muscle originate from?

A

The Ischial Spine

37
Q

Where does the Inferior Gemelli Muscle originate from?

A

The Ischial Tuberosity

38
Q

Where do the Gemelli Muscles attach distally?

A

The Greater Trochanter of the Femur

39
Q

What is the function of the Gemelli Muscles?

A
  1. Lateral Rotation of the Lower Limb at the Hip Joint

2. Abduction of the Lower Limb at the Hip Joint

40
Q

Do the Superior and Inferior Gemelli Muscles have the same innervation?

A

No

41
Q

What is the innervation of the Superior Gemelli Muscle?

A

Nerve to the Obturator Internus

42
Q

What is the innervation of the Inferior Gemelli Muscle?

A

Nerve to the Quadratus Femoris

43
Q

How is the Quadratus Femoris Muscle described?

A

A Flat, Square Shaped Muscle

44
Q

Where id the Quadratus Femoris Muscle located, in relation to the other Deep Gluteal Muscles?

A

Inferiorly

45
Q

Where does the Quadratus Femoris Muscle originate from?

A

Lateral Side of the Ischial Tuberosity

46
Q

Where does the Quadratus Femoris Muscle attach distally?

A

Quadrate Tuberosity on the Intertrochanteric Crest

47
Q

What is the function of the Quadratus Femoris Muscle?

A

Lateral Rotation of the Hip

48
Q

What is the innervation of the Quadratus Femoris Muscle?

A

Nerve to the Quadratus Femoris

3rd Year - MSK Lower Limb Anatomy (20 decks)

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