Week 7 Muscles - Anterior Thigh

Sartorius origin

ASIS(anterior superior iliac spine) and superior part of notch inferior to it

Sartorius insertion

pes anserinus(superior part of medial surface of tibia)

Sartorius innervation

femoral nerve (L2-L3)

Sartorius blood supply

lateral circumflex femoral artery

Sartorius action

hip flexion, hip external rotation, knee flexion

Sartorius purposeful activity

tailor sitting, crossing legs

Psoas Major origin

sides of T12-L5 vertebrae and discs between them; transverse process of all lumbar vertebrae

Psoas Major insertion

less trochanter of femur

Psoas Major innervation

Anterior rami of lumbar nerves (L1-L3)

Psoas Major blood supply

lumbar artery

Psoas Major action

hip flexion with iliacus, trunk stabilization while standing

Psoas Major purposeful activity

march

Iliacus origin

iliac crest, iliac fossa, ala of sacrum, anterior sacroiliac ligments

Iliacus insertion

tendon of psoas major, lesser trochanter and femur distal to it

Iliacus innervation

femoral nerve (L2, L3)

Iliacus blood supply

medial circumflex femoral artery

Iliacus action

hip flexion

Iliacus purposeful activity

walking, marching

Rectus Femoris origin

anterior inferior iliac spine(AIIS)

Rectus Femoris insertion

quadriceps tendon, patella, patellar tendon to the tibial tuberosity

Rectus Femoris innervation

femoral nerve (L2-L4)

Rectus Femoris blood supply

lateral circumflex femoral artery

Rectus Femoris action

hip flexion, knee extension

Rectus Femoris purposeful activity

sit-to-stand, kicking

Vastus Lateralis origin

greater trochanter and lateral lip of linea aspera

Vastus Lateralis insertion

quadriceps tendon, patella, pateller tendon to the tibial tuberosity

Vastus Lateralis innervation

femoral nerve (L2-L4)

Vastus Lateralis blood supply

lateral circumflex femoral artery

Vastus Lateralis action

knee extension

Vastus Lateralis purposeful activity

standing up

Vastus Medialis origin

interochanteric line and medial lip of linea aspera

Vastus Medialis insertion

quadriceps tendon, patella, pateller tendon to the tibial tuberosity

Vastus Medialis innervation

femoral nerve (L2-L4)

Vastus Medialis blood supply

lateral circumflex femoral artery

Vastus Medialis action

knee extension, patellar stabilization

Vastus Medialis purposeful activity

sit-to-stand

Vastus Intermedius origin

anterior and lateral of shaft of femur

Vastus Intermedius insertion

quadriceps tendon, patella, pateller tendon to the tibial tuberosity

Vastus Intermedius innervation

femoral nerve (L2-L4)

Vastus Intermedius blood supply

lateral circumflex femoral artery

Vastus Intermedius action

knee extension

Vastus Intermedius purposeful activity

sit to stand

most anterior thigh inserts onto the

quadriceps tendon, patella, pateller tendon to the tibial tuberosity