Structures of the Anterior Thigh and Inner Lip Metatarsals 3–5. Medial side of proximal phalanges of toes 3–5. Adduct and flex proximal metatarsophalangeal joints and extend toes at interphalangeal joints. Lateral plantar nerve.

Rectus femoris Origin, Insertion, Action, Innervation

Anterior Inferior Iliac Spine

Patella via quadriceps tendon and then tibial tuberosity via patellar ligament

All four heads extend leg at knee joint

Femoral Nerve

Vastus Laateralis Origin, Insertion, Action, Innervation

Greater Trochanter and Linea Aspera of femur Patella via quadriceps tendon and then tibial tuberosity via patellar ligament

All four heads extend leg at knee joint

Femoral Nerve

Vastus Intermedius Origin, Insertion, Action, Innervation

Anterior and Lateral surfaces of body of femur

Patella via quadriceps tendon and then tibial tuberosity via patellar ligament

All four heads extend leg at knee joint

Femoral Nerve

Vastus Medialis Origin, Insertion, Action, Innervation

Linea Aspera of Femur

Patella via quadriceps tendon and then tibial tuberosity via patellar ligament

All four heads extend leg at knee joint

Femoral Nerve

Tensor Fasciae Latae Origin, Insertion, Action, Innervation

Lateral surface of anterior iliac crest and anterior superior iliac spine.

Tibia by way of iliotibial tract.

Flexes and abducts hip joint.

Superior gluteal nerve.

Satorius Origin, Insertion, Action, Innervation

Anterior superior iliac spine.

Medial surface of body of tibia.

Weakly flexes leg at knee joint; weakly flexes, abducts, and laterally rotates thigh at hip joint.

Femoral nerve.

Iliacus Origin, Insertion, Action, Innervation

Iliac fossa and sacrum.

With psoas major into lesser trochanter of femur.

No Action

Femoral nerve

Psoas Major Origin, Insertion, Action, Innervation

Transverse processes and bodies of lumbar vertebrae.

With iliacus into lesser trochanter of femur.

Psoas major and iliacus muscles acting together flex thigh at hip joint, rotate thigh laterally, and flex trunk on hip as in sitting up from supine position.

Lumbar spinal nerves L2–L3.

Pectineus Origin, Insertion, Action, Innervation

Superior ramus of pubis.

Pectineal line of femur, between lesser trochanter and linea aspera.

Flexes and adducts thigh at hip joint.

Femoral nerve.

Adductor Brevis Origin, Insertion, Action, Innervation

Inferior ramus of pubis.

Superior half of linea aspera of femur.

Adducts and flexes thigh at hip joint and rotates thigh.*

Obturator nerve.

Adductor Longus Origin, Insertion, Action, Innervation

Pubic crest and pubic symphysis.

Linea aspera of femur.

Adducts and flexes thigh at hip joint and rotates thigh.*

Obturator nerve.

Adductor Magnus Origin, Insertion, Action, Innervation

Inferior ramus of pubis and ischium to ischial tuberosity.

Linea aspera of femur.

Adducts thigh at hip joint and rotates thigh; anterior part flexes thigh at hip joint, and posterior part extends thigh at hip joint.*

Obturator and tibial nerve from sciatic nerve.

Gracilis Origin, Insertion, Action, Innervation