LE Anterior thigh

Psoas major• T12 – L5 vertebrae• IV disksOrigin

• Lesser trochanterInsertion• Anterior rami of lumbar nerves

(L1,L2, & L3)Nerve

• Flexes the thighAction

iliopsoas

Iliacus

• Iliac crestOrigin

• Lesser trochanterInsertion

• Femoral nerve (L2 & L3)Nerve

• Flexes thighAction

iliopsoas

Tensor fasciae latae• ASIS• Iliac crestOrigin• Iliotibial tract• Lateral condyle of tibiaInsertion

• Superior gluteal nerve (L4 – L5)Nerve

• Abducts, flexes, & medially rotates hipAction

iliopsoas

Sartorius

• ASISOrigin

• Medial surface of tibiaInsertion

• Femoral nerve (L2 & L3)Nerve

• Flexes, abducts, and laterally rotates hipAction

iliopsoas

Rectus femoris• AIIS• IliumOrigin• Base of patella• Patellar ligament• Tibial tuberosity

Insertion

• Femoral nerve (L2,L3, and L4)Nerve• Extends leg at knee joint• Steadies hip joint• Helps iliopsoas flex thigh

Action

Quadriceps femoris

Vastus lateralis

• Greater trochanterOrigin• Base of patella• Patellar ligament• Tibial tuberosity

Insertion

• Femoral nerve (L2,L3, and L4)Nerve

• Extends leg at knee jointAction

Quadriceps femoris

Vastus medialis• Interochanteric line• Linea asperaOrigin• Base of patella• Patellar ligament• Tibial tuberosity

Insertion

• Femoral nerve (L2,L3, and L4)Nerve

• Extends leg at knee jointAction

Quadriceps femoris

Vastus intermedius

• Anterior and lateral surfaces of femurOrigin• Base of patella• Patellar ligament• Tibial tuberosity

Insertion

• Femoral nerve (L2,L3, and L4)Nerve

• Extends leg at knee jointAction

Quadriceps femoris

Pectineus

• Superior pubic ramusOrigin

• Lesser trochanterInsertion

• Femoral nerve (L2 and L3)Nerve

• Adducts, flexes, and medially rotates thighAction

Adductor longus

• PubisOrigin

• Linea aspera of femurInsertion

• Obturator nerve ( L2,L3, and L4)Nerve

• Adducts thighAction

Adductor brevis

• PubisOrigin

• Pectineal lineInsertion

• Obturator nerve ( L2,L3, and L4)Nerve

• Adducts thighAction

Adductor magnus• Inferior pubic ramus• Ischial tuberosityOrigin• Gluteal tuberosity• Linea aspera• Adductor tubercle

Insertion• Adductor part: obturator nerve (L2,L3, and

L4)• Hamstring part: Tibial part of sciatic nerve

(L4)Nerve

• Adducts thighAction

Gracilis

• PubisOrigin

• Medial surface of tibiaInsertion

• Obturator nerve (L2 and L3)Nerve

• AdductsAction

Obturator externus

• Obturator foramenOrigin

• Trochanteric fossaInsertion

• Obturator nerve (L3 and L4)Nerve

• Laterally rotatesAction