1.2.5.1. Muscles of Hip Joint Flexion

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 Flexors of the Hip Joint?

Answer 2

1. Iliopsoas Muscle
2. Rectus Femoris Muscle
3. Sartorius Muscle
4. Pectineus Muscle

Question 3

How many muscles is the Iliopsoas Muscle?

Answer 3

2

Question 4

What are the 2 Muscles which form the Iliopsoas Muscle?

Answer 4

1. Psoas Major Muscle

2. Iliacus Muscle

Question 5

What happens to the Psoas Major and Iliacus Muscle?

Answer 5

They come together to form a tendon, hence why they are sometimes referred to as one muscle

Question 6

Where does the Psoas Major Muscle originate from?

Answer 6

The Vertebral Bodies, and associated Interverterbral Disks of:

1. T12
2. L1
3. L2
4. L3

Question 7

Where does the Iliacus Muscle originate from?

Answer 7

The Iliac Fossa of the Pelvis

Question 8

Where do the Psoas Major and Iliacus Muscles merge, to form the Iliopsoas Muscle?

Answer 8

In the Thigh

Question 9

Where does the Iliopsoas Muscle attach distally?

Answer 9

The Lesser Trochanter of the Femur

Question 10

What is the function of the Iliopsoas Muscle?

Answer 10

1. Flexion of the Lower Limb at the Hip Joint

2. Assists in Lateral Rotation of the Lower Limb at the Hip Joint

Question 11

What is the innervation of the Psoas Major Muscle?

Answer 11

Anterior Rami of L1-L3

Question 12

What is the innervation of the Iliacus Muscle?

Answer 12

Femoral Nerve

Question 13

Where does the Rectus Femoris Muscle originate from?

Answer 13

The Ilium, immediately superior to the Acetabulum

Question 14

Where does the Rectus Femoris Muscle travel?

Answer 14

Straight down the Leg

Note - Latin for Straight is Rectus

Question 15

Where does the Rectus Femoris Muscle attach distally?

Answer 15

The Patella, via the Quadriceps Tendon

Question 16

What is the function of the Rectus Femoris Muscle?

Answer 16

1. Flexion of the Lower Limb at the Hip Joint

2. Extension of the Knee Joint

Question 17

What is the innervation of the Rectus Femoris Muscle?

Answer 17

The Femoral Nerve

Question 18

Where does the Sartorius Muscle originate from?

Answer 18

Anterior Superior Iliac Spine

Question 19

Where does the Sartorius Muscle attach distally?

Answer 19

Superior, Medial surface of the Tibia

Question 20

What is significant about the Sartorius Muscle?

Answer 20

It is the longest Muscle in the Body

Question 21

Where does the Sartorius Muscle travel?

Answer 21

1. Across the Thigh, Inferomedially

2. More Superficially than other Muscles in the Leg

Question 22

What is the main functions of the Sartorius Muscle?

Answer 22

1. Flexion of the Hip Joint
2. Abduction of the Hip Joint
3. Lateral Rotation of the Hip Joint
4. Flexion of the Knee Joint

(Think about sitting cross legged and the trouser seams face outwards.)

Question 23

What is the innervation of the Sartorius Muscle?

Answer 23

The Femoral Nerve

Question 24

Where is the Pectineus Muscle located, and what does this form?

Answer 24

Base of the Femoral Triangle

Question 25

Where does the Pectineus Muscle originate from?

Answer 25

Pectineal Line of the Anterior Surface of the Pelvis

Question 26

Where does the Pectineus Muscle attach distally?

Answer 26

Pectineal Line of the Posterior Surface of the Femur, just inferior to the Lesser Trochanter

Question 27

What is the function of the Pectineus Muscle?

Answer 27

1. Adduction of the Hip Joint

2. Flexion of the Hip Joint

Question 28

What is significant about the innervation of the Pectineus Muscle?

Answer 28

It has dual innervation, so can be considered a transitional muscle between the Anterior and Medial Compartments of the Thigh.

(Primarily Femoral, also Obturator)

Question 29

What is the innervation of the Pectineus Muscle?

Answer 29

1. Femoral Nerve

2. It may also receive a branch from the Obturator Nerve