Muscles of Hip Joint

Question 1

What is the origin, insertion and actions of the Psoas Major?

Answer 1

O : Anterolateral lumbar spine
I : Lesser trochanter of the femur
A :
1. Flexes the thigh at the hip joint
2. Posteriorly tilts the pelvis at the lumbrosacral joint
3. Laterally rotates the thigh at the hip joint

Question 2

What is the origin, insertion and actions of the Iliacus?

Answer 2

O : Internal Ilium
I : Lesser trochanter of the femur
A :
1. Flexes the thigh at the hip joint
2. Laterally rotates the thigh at the hip joint

Question 3

What is the origin, insertion and actions of the Tensor Fasciae Latae?

Answer 3

O : Anterior Superior Iliac Spine
I : Iliotibial Band
A :
1. Flexes the thigh at the hip joint
2. Abducts the thigh at the hip joint
3. Medially Rotates the thigh at the hip joint
4. Anteriorly tilts the pelvis at the hip joint
5. Depresses the same side pelvis at the hip joint

Question 4

What is the origin, insertion and actions of the Sartorius?

Answer 4

O : Anterior Superior Iliac Spine
I : Pes Anserine Tendon
A :
1. Flexes the thigh at the hip joint
2. Abducts the thigh at the hip joint
3. Laterally rotates the thigh at the hip joint
4. Flexes the leg at the knee joint
5. Anteriorly tilts the pelvis at the hip joint