thigh muscles

sartorious origin

ASIS (anterior superior iliac spine)

sartorious insertion

medial tibial condyle

sartorious nerve

femoral n.

sartorious action

hip and knee flexion

tensor fascia latae origin

anterior iliac crest (ASIS)

tensor fascia latae insertion

IT tract

tensor fascia latae nerve

superior gluteal n.

tensor fascia latae action

hip abduction, flexion

iliopsoas origin

illiacus part: vertebrae T12-L4

soas part: 2/3 of iliac fossa, iliac crest

iliopsoas insertion

lesser trochanter

iliopsoas nerve

femoral n. (L2-L4)

iliopsoas action

flex hip and slight external rotation

pectineus origin

pubis (superior ramus) pectineal line

pectineus insertion

from lesser trochanter to linea aspera

pectineus nerve

femoral n.

pectineus action

adduction, internal rotation of the hip

adductor magnus origin

pubis (inferior ramus)

adductor magnus insertion

linea aspera, adductor tubercle

adductor magnus nerve

obturator n.

adductor magnus action

adduction, extension and internal rotation of hip

adductor longus origin

pubis (inferior ramus)

adductor longus insertion

linea aspera

adductor longus nerve

obturator n.

adductor longus action

hip adduction, internal rotation

gracilis origin

inferior ischiopubic ramus, body of pubis

gracilis insertion

medial tibia at pes anserinus

gracilis nerve

obturator n.

gracilis action

hip adduction, knee flexion, tibial internal rotation

adductor brevis origin

pubis (inferior ramus)

adductor brevis insertion

linea aspera

adductor brevis nerve

obturator n.

adductor brevis action

hip adduction, internal rotation

rectus femoris origin

AIIS (anterior inferior iliac spine)

rectus femoris insertion

patella → tibial tuberosity via patellar tendon/ligament

rectus femoris nerve

femoral n., sciatic n.

rectus femoris action

hip flexion, knee extension

only quad muscle that crosses hip joint

vastus lateralis origin

greater trochanter

vastus lateralis insertion

patella → tibial tuberosity via patellar tendon

vastus lateralis nerve

femoral n.

vastus lateralis action

knee extension

vastus medialis origin

linea aspera (medial lip)

vastus medialis insertion

patella, tibial tuberosity

vastus medialis nerve

femoral n.

vastus medialis action

knee extension

serves as a stabilizer for patellar tracking

vastus intermedius origin

anterior femur

vastus intermedius insertion

patella, tibial tuberosity

vastus intermedius nerve

femoral n.

vastus intermedius action

knee extension

biceps femoris origin

long head: ischial tuberosity

short head: linea aspera

biceps femoris insertion

femoral head

biceps femoris nerve

long head: tibial n.

short head: common fibular n.

biceps femoris action

long head: hip extension, knee flexion

short head: knee flexion

semitendinosus origin

ischial tuberosity

semitendinosus insertion

medial tibial condyle

semitendinosus nerve

tibial n.

semitendinosus action

hip extension, knee flexion

semimembranosus origin

ischial tuberosity

semimembranosus insertion

medial tibial condyle (medial)

semimembranosus nerve

tibial n.

semimembranosus action

hip extension, knee flexion