Muscles of Anterior Thigh: FLEXORS of Hip Joint

Question 1

Pectineus

Answer 1

O- Superior Ramus of Pubis (Pectin Line)
I- Pectineal line of Femur, inferior to lesser trochanter
N- 1. Femoral Nerve
2. Accessory Obturator
A- 1. ADDuct thigh
2. Flex thigh
3. Assist with medial rotation of thigh

Question 2

Iliacus (Iliopsoas)

Answer 2

O-  1.  Iliac crest
      2.  Iliac fossa
      3. Ala of sacrum
      4.  Anterior sacro-iliac ligaments
I-  1.  Tendon of psoas major
    2.  Lesser trochanter
    3.  Femur distal to it
N- Femoral Nerve L2 L3
A- 1.  Flexes thigh at  hip joint
    2.  Stabilizes hip

Question 3

Sartorius

Answer 3

O- Asis and superior part of notch inferior to it
I- Superior part of medial surface of tibia (pes anserinus)
N- Femoral Nerve
A- 1. Flexes, ABducts, and laterally rotates thigh at hip joint
2. Flexes leg at knee joint (medially rotating leg when knee is flexed)