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LE Anterior thigh
iliopsoas
Psoas major
Origin
Insertion
• T12 – L5 vertebrae
• IV disks
• Lesser trochanter
Nerve
• Anterior rami of lumbar nerves
(L1,L2, & L3)
Action
• Flexes the thigh
iliopsoas
Iliacus
Origin
Insertion
• Iliac crest
• Lesser trochanter
Nerve
• Femoral nerve (L2 & L3)
Action
• Flexes thigh
iliopsoas
Tensor fasciae latae
Origin
Insertion
• ASIS
• Iliac crest
• Iliotibial tract
• Lateral condyle of tibia
Nerve
• Superior gluteal nerve (L4 – L5)
Action
• Abducts, flexes, & medially
rotates hip
iliopsoas
Sartorius
Origin
• ASIS
Insertion
• Medial surface of tibia
Nerve
• Femoral nerve (L2 & L3)
Action
• Flexes, abducts, and laterally
rotates hip
Quadriceps femoris
Rectus femoris
Origin
Insertion
• AIIS
• Ilium
• 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
Quadriceps femoris
Vastus lateralis
Origin
Insertion
• Greater trochanter
• Base of patella
• Patellar ligament
• Tibial tuberosity
Nerve
• Femoral nerve (L2,L3, and L4)
Action
• Extends leg at knee joint
Quadriceps femoris
Vastus medialis
Origin
Insertion
• Interochanteric line
• Linea aspera
• Base of patella
• Patellar ligament
• Tibial tuberosity
Nerve
• Femoral nerve (L2,L3, and L4)
Action
• Extends leg at knee joint
Quadriceps femoris
Vastus intermedius
Origin
Insertion
• Anterior and lateral surfaces of femur
• Base of patella
• Patellar ligament
• Tibial tuberosity
Nerve
• Femoral nerve (L2,L3, and L4)
Action
• Extends leg at knee joint
Pectineus
Origin
Insertion
• Superior pubic ramus
• Lesser trochanter
Nerve
• Femoral nerve (L2 and L3)
Action
• Adducts, flexes, and medially
rotates thigh
Adductor longus
Origin
Insertion
• Pubis
• Linea aspera of femur
Nerve
• Obturator nerve ( L2,L3, and L4)
Action
• Adducts thigh
Adductor brevis
Origin
Insertion
• Pubis
• Pectineal line
Nerve
• Obturator nerve ( L2,L3, and L4)
Action
• Adducts thigh
Adductor magnus
Origin
Insertion
• Inferior pubic ramus
• Ischial tuberosity
• 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
Gracilis
Origin
Insertion
• Pubis
• Medial surface of tibia
Nerve
• Obturator nerve (L2 and L3)
Action
• Adducts
Obturator externus
Origin
Insertion
• Obturator foramen
• Trochanteric fossa
Nerve
• Obturator nerve (L3 and L4)
Action
• Laterally rotates
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