1.2.5.3. Muscles of Hip Joint Abduction

Question 1

What movements can be carried out at the Hip Joint?

Answer 1

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

Question 2

What are the main Abductor Muscles of the Hip Joint?

Answer 2

1. Gluteus Medius Muscle
2. Gluteus Minimus Muscle
3. Deep Gluteal Muscles:
4. a) Piriformis Muscle
5. b) Obturator Internus Muscle
6. c) Superior and Inferior Gemelli Muscles

Question 3

Where is the Gluteus Medius Muscle located?

Answer 3

In between the Gluteus Maximus and the Gluteus Minimus Muscles

Question 4

How is the Gluteus Medius Muscle described?

Answer 4

Fan-Shaped, similar to the Gluteus Minimus Muscle

Question 5

Where does the Gluteus Medius Muscle originate from?

Answer 5

Gluteal Surface of the Ilium

Question 6

Where does the Gluteus Medius Muscle attach distally?

Answer 6

Lateral Surface of the Greater Trochanter of the Femur

Question 7

What is the function of the Gluteus Medius Muscle?

Answer 7

1. Abduction of the Lower Limb at the Hip Joint
2. Medial Rotation of the Lower Limb at the Hip Joint
3. During Locomotion, it secures the Pelvis, preventing Pelvic Drop of the opposite Limb
4. The Posterior Fibers are thought to produce a small amount of Lateral Rotation of the Lower Limb at the Hip Joint

Question 8

What is the innervation of the Gluteus Medius Muscle?

Answer 8

The Superior Gluteal Nerve

Question 9

Where is the Gluteus Minimus Muscle located, in relation to the other Gluteal Muscles?

Answer 9

1. It is the Deepest and Smallest of the Superficial Gluteal Muscles (Gluteus Maximus and Medius Muscles)
2. It is Superficial to the Deep Gluteal Muscles (Piriformis, Gemelli)

Question 10

What is the Gluteus Minimus Muscle’s shape and function similar to?

Answer 10

Gluteus Medius Muscle, it is also Fan-Shaped

Question 11

Where does the Gluteus Minimus Muscle originate from?

Answer 11

Ilium

Question 12

Where does the Gluteus Minimus Muscle attach distally?

Answer 12

It converges to form a Tendon, inserting into the Anterior Side of the Greater Trochanter

Question 13

What is the function of the Gluteus Minimus Muscle?

Answer 13

1. Abduction of the Lower Limb at the Hip Joint
2. Medial Rotation of the Lower Limb at the Hip Joint
3. During Locomotion, it secures the Pelvis, preventing Pelvic Drop of the opposite Limb

Question 14

What is the innervation of the Gluteus Minimus Muscle?

Answer 14

Superior Gluteal Nerve

Question 15

Where are the Deep Gluteal Muscles located?

Answer 15

Underneath the Gluteus Minimus Muscle

Question 16

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

Answer 16

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

Question 17

Where does the Piriformis Muscle originate from?

Answer 17

Anterior Surface of the Sacrum

Question 18

Where does the Piriformis Muscle travel?

Answer 18

Inferolaterally, through the Greater Sciatic Foramen

Question 19

Where does the Piriformis Muscle attach distally?

Answer 19

The Greater Trochanter of the Femur

Question 20

What is the function of the Piriformis Muscle?

Answer 20

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

2. Abduction of the Lower Limb at the Hip Joint

Question 21

What is the innervation of the Piriformis Muscle?

Answer 21

Nerve to the Piriformis Muscle

Question 22

What does the Obturator Internus Muscle form?

Answer 22

The Lateral Walls of the Pelvic Cavity

Question 23

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

Answer 23

Superior and Inferior Gemelli Muscles (Gemelli Muscle)

Question 24

Where does the Obturator Internus Muscle originate from?

Answer 24

1. Pubis at the Obturator Foramen

2. Ischium at the Obturator Foramen

Question 25

Where does the Obturator Internus Muscle travel?

Answer 25

Through the Lesser Sciatic Foramen

Question 26

Where does the Obturator Internus Muscle attach distally?

Answer 26

The Greater Trochanter of the Femur

Question 27

What is the function of the Obturator Internus Muscle?

Answer 27

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

2. Abduction of the Lower Limb at the Hip Joint

Question 28

How are the Gemelli Muscles described?

Answer 28

2 Narrow, Triangular Muscles

Question 29

What separates the 2 Gemelli Muscles?

Answer 29

The Obturator Internus Tendon

Question 30

Where does the Superior Gemelli Muscle originate from?

Answer 30

The Ischial Spine

Question 31

Where does the Inferior Gemelli Muscle originate from?

Answer 31

The Ischial Tuberosity

Question 32

Where do the Gemelli Muscles attach distally?

Answer 32

The Greater Trochanter of the Femur

Question 33

What is the function of the Gemelli Muscles?

Answer 33

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

2. Abduction of the Lower Limb at the Hip Joint

Question 34

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

Answer 34

No

Question 35

What is the innervation of the Superior Gemelli Muscle?

Answer 35

Nerve to the Obturator Internus

Question 36

What is the innervation of the Inferior Gemelli Muscle?

Answer 36

Nerve to the Quadratus Femoris