1. LE Anterior thigh

2. Origin Insertion Nerve Action Psoas major T12 – L5 vertebrae IV disks
iliopsoas
Psoas major
Origin
T12 – L5 vertebrae
IV disks
Insertion
Lesser trochanter
Nerve
Anterior rami of lumbar nerves (L1,L2, & L3)
Action
Flexes the thigh

3. Origin Insertion Nerve Action Iliacus Iliac crest Lesser trochanter
iliopsoas
Iliacus
Origin
Iliac crest
Insertion
Lesser trochanter
Nerve
Femoral nerve (L2 & L3)
Action
Flexes thigh

4. Origin Insertion Nerve Action Tensor fasciae latae ASIS Iliac crest
iliopsoas
Tensor fasciae latae
Origin
ASIS
Iliac crest
Insertion
Iliotibial tract
Lateral condyle of tibia
Nerve
Superior gluteal nerve (L4 – L5)
Action
Abducts, flexes, & medially rotates hip

5. Origin Insertion Nerve Action Sartorius ASIS Medial surface of tibia
iliopsoas
Sartorius
Origin
ASIS
Insertion
Medial surface of tibia
Nerve
Femoral nerve (L2 & L3)
Action
Flexes, abducts, and laterally rotates hip

6. Origin Insertion Nerve Action Rectus femoris AIIS Ilium
Quadriceps femoris
Rectus femoris
Origin
AIIS
Ilium
Insertion
Base of patella
Patellar ligament
Tibial tuberosity
Nerve
Femoral nerve (L2,L3, and L4)
Action
Extends leg at knee joint
Steadies hip joint
Helps iliopsoas flex thigh

7. Origin Insertion Nerve Action Vastus lateralis Greater trochanter
Quadriceps femoris
Vastus lateralis
Origin
Greater trochanter
Insertion
Base of patella
Patellar ligament
Tibial tuberosity
Nerve
Femoral nerve (L2,L3, and L4)
Action
Extends leg at knee joint

8. Origin Insertion Nerve Action Vastus medialis Interochanteric line
Quadriceps femoris
Vastus medialis
Origin
Interochanteric line
Linea aspera
Insertion
Base of patella
Patellar ligament
Tibial tuberosity
Nerve
Femoral nerve (L2,L3, and L4)
Action
Extends leg at knee joint

9. Origin Insertion Nerve Action Vastus intermedius
Quadriceps femoris
Vastus intermedius
Origin
Anterior and lateral surfaces of femur
Insertion
Base of patella
Patellar ligament
Tibial tuberosity
Nerve
Femoral nerve (L2,L3, and L4)
Action
Extends leg at knee joint

10. Origin Insertion Nerve Action Pectineus Superior pubic ramus
Lesser trochanter
Nerve
Femoral nerve (L2 and L3)
Action
Adducts, flexes, and medially rotates thigh

11. Origin Insertion Nerve Action Adductor longus Pubis
Linea aspera of femur
Nerve
Obturator nerve ( L2,L3, and L4)
Action
Adducts thigh

12. Origin Insertion Nerve Action Adductor brevis Pubis Pectineal line
Obturator nerve ( L2,L3, and L4)
Action
Adducts thigh

13. Origin Insertion Nerve Action Adductor magnus Inferior pubic ramus
Ischial tuberosity
Insertion
Gluteal tuberosity
Linea aspera
Adductor tubercle
Nerve
Adductor part: obturator nerve (L2,L3, and L4)
Hamstring part: Tibial part of sciatic nerve (L4)
Action
Adducts thigh

14. Origin Insertion Nerve Action Gracilis Pubis Medial surface of tibia
Obturator nerve (L2 and L3)
Action
Adducts

15. Origin Insertion Nerve Action Obturator externus Obturator foramen
Trochanteric fossa
Nerve
Obturator nerve (L3 and L4)
Action
Laterally rotates