Rectus Femoris - Origin

AIIS (anterior inferior iliac spine)

Rectus Femoris - Insertion

Patella

Rectus Femoris - Action

Extends leg at knee & flexes thigh at hip

Rectus Femoris - Innervation

Femoral nerve

Vastus Lateralis - Origin

Greater trochanter & linea aspera

Vastus Lateralis - Insertion

Patella

Vastus Lateralis - Action

Extends leg at knee

Vastus Lateralis - Innervation

Femoral nerve

Vastus Medialis - Origin

Linea aspera

Vastus Medialis - Insertion

Patella

Vastus Medialis - Action

Extends leg at knee

Vastus Medialis - Innervation

Femoral nerve

Vastus Intermedius - Origin

Anterior & lateral surfaces of the femur

Vastus Intermedius - Insertion

Patella

Vastus Intermedius - Action

Extends leg at knee

Vastus Intermedius - Innervation

Femoral nerve

Sartorius - Origin

AIIS (anterior inferior iliac spine)

Sartorius - Insertion

Proximal medial surface of the tibia

Sartorius - Action

Flexes, abducts, & laterally rotates thigh at hip; flexes leg at knee

Sartorius - Innervation

Femoral nerve

Gracilis - Origin

Pubis

Gracilis - Insertion

Medial surface of the tibia

Gracilis - Action

Adducts thigh & flexes leg at knee

Gracilis - Innervation

Obturator nerve

Adductor Longus - Origin

Pubis

Adductor Longus - Insertion

Linea Aspera

Adductor Longus - Action

Adduction & flexion of thigh

Adductor Longus - Innervation

Obturator nerve

Adductor Brevis - Origin

Pubis

Adductor Brevis - Insertion

Linea aspera

Adductor Brevis - Action

Adduction of the thigh

Adductor Brevis - Innervation

Obturator nerve

Adductor Magnus - Origin

Pubis & ischial tuberosity

Adductor Magnus - Insertion

Linea aspera

Adductor Magnus - Action

Adduction of thigh, extension of leg, & flexion of leg

Adductor Magnus - Innervation

Obturator & tibial nerves

Pectineus - Origin

Pubis

Pectineus - Insertion

Lesser trochanter

Pectineus - Action

Adduction & flexion of the thigh

Pectineus - Innervation

Femoral nerve

Iliopsoas

A convergence of the iliacus & psoas major muscles

Iliacus - Origin

Medial surface of the ilium

Iliacus - Insertion

Lesser trochanter

Iliacus - Action

Flexion of thigh at hip & flexion of trunk at hip

Iliacus - Innervation

Femoral nerve

Psoas Major - Origin

Vertebrae T12-L5

Psoas Major - Insertion

Lesser trochanter

Psoas Major - Action

Flexion of the thigh & trunk

Psoas Major - Innervation

Anterior rami of lumbar spinal nerves (L2-3)

Semitendinosus - Origin

Ischial tuberosity

Semitendinosus - Insertion

Proximal medial surface of the tibia

Semitendinosus - Action

Flexion of leg at knee, medial rotation of leg, & extension of thigh

Semitendinosus - Innervation

Tibial nerve

Semimembranosus - Origin

Ischial tuberosity

Semimembranosus - Insertion

Posterior medial condyle of the tibia

Semimembranosus - Action

Flexion of leg at knee, medial rotation of leg, & extension of thigh

Semimembranosus - Innervation

Tibial nerve

Biceps Femoris (Long Head) - Origin

Ischial tuberosity

Biceps Femoris (Long Head) - Insertion

Head of the fibula & lateral condyle of the tibia

Biceps Femoris (Long Head) - Action

Flexion of knee, lateral rotation of leg, & extension of thigh

Biceps Femoris (Long Head) - Innervation

Tibial & common fibular nerves

Biceps Femoris (Short Head) - Origin

Linea aspera

Biceps Femoris (Short Head) - Insertion

Head of the fibula & lateral condyle of the tibia

Biceps Femoris (Short Head) - Action

Flexion at knee, lateral rotation of leg, & extension of thigh

Biceps Femoris (Short Head) - Innervation

Tibial & common fibular nerves

Tensor Fasciae Latae - Origin

Iliac crest

Tensor Fasciae Latae - Insertion

Iliotibial band

Tensor Fasciae Latae - Action

Abduction & medial rotation of the thigh, flexion at the hip, & extension at the knee

Tensor Fasciae Latae - Innervation

Superior gluteal nerve

Iliotibial Band

The tendon of the tensor fasciae latae muscle

Iliotibial Band - Insertion

Lateral tibia

Gluteus Maximus - Origin

Sacrum, coccyx, & posterior iliac crest

Gluteus Maximus - Insertion

Greater trochanter & iliotibial band

Gluteus Maximus - Action

Extension & lateral rotation at the hip

Gluteus Maximus - Innervation

Inferior gluteal nerve

Gluteus Medius - Origin

Lateral surface of the ilium

Gluteus Medius - Insertion

Greater trochanter

Gluteus Medius - Action

Abduction & medial rotation of the thigh

Gluteus Medius - Innervation

Superior gluteal nerve

Gluteus Minimus - Origin

Lateral surface of the ilium

Gluteus Minimus - Insertion

Greater trochanter

Gluteus Minimus - Action

Abduction & medial rotation of the thigh

Gluteus Minimus - Innervation

Superior gluteal nerve

Piriformis - Origin

Anterior surface of the sacrum

Piriformis - Insertion

Greater trochanter

Piriformis - Action

Lateral rotation of the thigh

Piriformis - Innervation

Spinal nerves L5-S1

Superior Gemellus - Origin

Ischial spine

Superior Gemellus - Insertion

Greater trochanter

Superior Gemellus - Action

Lateral rotation of the hip

Superior Gemellus - Innervation

Obturator nerve

Obturator Internus - Origin

Obturator foramen

Obturator Internus - Insertion

Greater trochanter

Obturator Internus - Action

Lateral rotation of the hip

Obturator Internus - Innervation

Obturator nerve