Anterior Thigh Muscles Acting at Hip Joint

Question 1

What is the MA of the Psoas Major?

Answer 1

With the origin fixed: flexion and lateral rotation of the hip joint

With the insertion fixed: trunk flexion toward the thigh and pelvic anterior tilt

Stabilization of the hip when standing

Question 2

What is the PA of the Psoas Major?

Answer 2

Sides of T12-L5 vertebrae and discs between them
& TP of L1-L5

Question 3

What is the DA of the Psoas Major?

Answer 3

Lesser trochanter

Question 4

What is the N for the Psoas Major?

Answer 4

Anterior rami of L1, L2, & L3

Question 5

What is the MA of the Iliacus?

Answer 5

With the origin fixed: flexion and lateral rotation of the hip joint

With the insertion fixed: trunk flexion toward the thigh and anterior pelvic tilt

Question 6

What is the PA of the Iliacus?

Answer 6

Iliac fossa, sacrum, and anterior sacroiliac ligaments

Question 7

What is the DA of the Iliacus?

Answer 7

Lesser trochanter and psoas tendon

Question 8

What is the N for the Iliacus?

Answer 8

Femoral nerve (L2, L3, & L4)

Question 9

What is the MA of the Pectineus?

Answer 9

Adduction of the hip joint

Slight flexion of the hip joint

Assists with lateral rotation of the hip joint

Question 10

What is the PA of the Pectineus?

Answer 10

Superior pubic ramus

Question 11

What is the DA of the Pectineus?

Answer 11

Pectineal line of femur

Question 12

What is the N for the Pectineus?

Answer 12

Femoral nerve (L2 & L3)

May receive a branch from obturator nerve

Question 13

What is the MA of the Sartorius?

Answer 13

Flexion, abduction, and lateral rotation of the hip joint

Flexion of the knee joint and medial rotation of the knee joint when flexed

Question 14

What is the PA of the Sartorius?

Answer 14

Anterior superior iliac spine (ASIS)

Question 15

What is the DA of the Sartorius?

Answer 15

Pes anserine of tibia

Question 16

What is the N for the Sartorius?

Answer 16

Femoral nerve (L2 & L3)