Anterior Thigh POINAS

Question 1

Psoas Major MA

Answer 1

With origin fixed:
- hip flexion
- hip lateral rotation

with insertion fixed:
- Trunk flexion toward thigh
- Pelvic anterior tilt

stabilize hip joint when standing

Question 2

Psoas Major PA

Answer 2

• sides of T12 - L5 vertebrae and discs between them
• TP L1-L5

Question 3

Psoas Major DA

Answer 3

Lesser trochanter

Question 4

Psoas Major N

Answer 4

Anterior rami of L1, L2, L3

Question 5

Illiacus MA

Answer 5

With origin fixed:
- hip flexion
- hip lateral rotation

with insertion fixed:
- Trunk flexion toward thigh
- Pelvic anterior tilt

Question 6

Illiacus PA

Answer 6

• Iliac fossa
• sacrum
• anterior sacroiliac ligaments

Question 7

Iliacus DA

Answer 7

• lesser trochanter
• psoas tendon

Question 8

iliacus N

Answer 8

Femoral nerve L2, L3, L4

Question 9

Pectineus MA

Answer 9

• Hip adduction
• slightly flexes hip
• assists with hip lateral rotation

Question 10

Pectineus PA

Answer 10

Superior pubic ramus

Question 11

Pectineus DA

Answer 11

pectineal line of femur

Question 12

Pectineus N

Answer 12

Femoral nerve L2*, L3
- may receive a branch from obturator nerve

Question 13

Sartorius MA

Answer 13

at the hip:
- flexion
- abduction
- lateral rotation

at the knee:
- flexion
- medial rotation when flexed

Question 14

Sartorius PA

Answer 14

Anterior superior iliac spine (ASIS)

Question 15

Sartorius DA

Answer 15

Pes anserine of tibia

Question 16

Sartorius N

Answer 16

Femoral nerve L2, L3

Question 17

Rectus Femoris MA

Answer 17

Knee extension
- steadies hip joint
- helps iliopsoas flex hip joint

Question 18

Rectus Femoris PA

Answer 18

Anterior inferior iliac spine (AIIS)
- ilium

Question 19

Rectus Femoris DA

Answer 19

Quadriceps tendon to tibial tuberosity via patellar ligament

Question 20

Rectus Femoris N

Answer 20

Femoral nerve L2, L3, L4

Question 21

Vastus Lateralis MA

Answer 21

Knee extension

Question 22

Vastus Lateralis PA

Answer 22

Greater trochanter
- lateral lip of linea aspera

Question 23

Vastus Lateralis DA

Answer 23

Quadriceps tendon to tibial tuberosity via patellar ligament

• Also attach to tibia and patella via aponeruroses *meidal and lateral patellar retinacula)

Question 24

Vastus Lateralis N

Answer 24

Femoral nerve L2, L3, L4

Question 25

Vastus Medialis MA

Answer 25

Knee extension

Question 26

Vastus Medialis PA

Answer 26

Intertrochanteric line - Medial lip of linea aspera

Question 27

Vastus Medialis DA

Answer 27

Quadriceps tendon to tibial tuberosity via patellar ligament - Also attach to tibia and patella via aponeruroses *meidal and lateral patellar retinacula)

Question 28

Vastus Medials N

Answer 28

Femoral nerve L2, L3*, L4*

Question 29

Vastus Intermedius MA

Answer 29

Knee extension

Question 30

Vastus Intermedius PA

Answer 30

Anterior and lateral femoral shaft

Question 31

Vastus Intermedius DA

Answer 31

Quadriceps tendon to tibial tuberosity via patellar ligament

Question 32

Vastus Intermedius N

Answer 32

Femoral nerve L2, L3*, L4*