Iliopsoas

Question 1

Is the iliopsoas monoarticular or polyarticular?

Answer 1

Polyarticular

Question 2

Which muscles make up the iliopsoas?

Answer 2

Psoas major and iliacus

Question 3

What parts of the body do the iliopsoas affect?

Answer 3

Lower back, Pelvis and Hip

Acts like a pulky as it curves over the front rim of the pelvis on it’s way to the femur

Question 4

What actions first awakened the iliopsoas?

Answer 4

Walking and sitting in infancy, once awakened it becomes constantly active in activities

Question 5

Origin of the iliopsoas

Answer 5

Psoas major: L1-L5, body of T12

Iliacus: upper 2/3 of the inner surface of the iliac bone up to inner lip of the iliac crest and anterior sacroiliac

Question 6

Insertion of the iliopsoas

Answer 6

Lesser trochanter of proximal femur

Question 7

Innervation of iliopsoas

Answer 7

L1-L4

Question 8

Chakra illuminated by iliopsoas

Answer 8

2nd, Svadisthana: illuminated by contracting and lengthening the iliopsoas

Question 9

Antagonists of the iliopsoas

Answer 9

Gluteus maximus: extends the hip and trunk, lengthening and stretching the iliopsoas, esp in back bends

Hamstrings: extends the hip when initiating back bends, can be used to draw opposite leg iliopsoas into a deeper stretch in lunges

Question 10

Synergists of the iliopsoas

Answer 10

Tensor fascia latta: assists the iliopsoas in hip flexion

Sartorius: assists in hip flexion and external rotation

Rectus femoris: assists in hip flexion and gluteus maximus in stretch during back bend

Pectineus: assists in hip flexion and addiction component stabalizes hip

Question 11

Posture where the iliopsoas is contracted

Answer 11

Optimally in triangle pose which contraction of the psoas major portion

Revolved variation contracts the iliacus portion

Question 12

Posture when the iliopsoas is stretched

Answer 12

Camel by contracting the hip and trunk extensors including gluteus maximus; stretch accentuated by contracting the quads