anterior pelvic girdle and thigh muscles

iliacus O

iliac crest, iliac fossa, ala of sacrum, and anterior sacroiliac ligament

iliacus I

tendon of psoas major to lesser trochanter of femur

iliacus N

femoral nerve

iliacus action

hip flexor, stabilize hip joint, ER

psoas major origin

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

psoas major insertion

tendon of psoas major to lesser trochanter of femur

psoas major nerve

femoral

psoas major action

hip flexor, ER, stabilize hip joint

iliopsoas tendon

iliacus and psoas major join together below inuinal ligament to become iliopsoas tendon → tight iliopsoas, increases lordosis which increases vertebrae being pulled anterior and inferior

tensor fascia latae origin

ASIS and anterior part of external lip of iliac crest

tensor fascia latae insertion

lateral condyle of tibia via IT tract Gerdy’s tubercle

tensor fascia latae nerve

superior gluteal nerve

tensor fascia latae action

abduct, IR, and flexion of thigh; keeps knee extended; steadies trunk on thigh

IT tract/band

gluteus maximus and tensor fascia latae combine to IT band to help compress muscles for venous return → attaches on gerdy’s tubercle and patella

sartorius origin

ASIS and to superior part of notch just inferior

sartorius insertion

pes anserine → superior part of medial tibia

sartorius nerve

femoral

sartorius action

flex, abduct, and ER thigh at hip; flex knee → tailor and stereotypical way male sits with crossed legs

pes anserine

say grace at supper time → sartorius, gracilis, and semitendinosus

quadriceps femoris

• rectus femoris

• vastus medialis

• vastus lateralis

• vastus intermedialis

rectus femoris origin

AIIS and ilium superior to acetabulum

rectus femoris insertion

base of patella and tibial tuberosity via patellar ligament

rectus femoris nerve

femoral

rectus femoris action

extend leg at knee, steadies hip joint and helps iliopsoas flex thigh

vastus medialis origin

intertrochanteric line and medial lip of linea aspera

vastus medialis insertion

base of patella and tibial tuberosity via patellar ligament

vastus medialis nerve

femoral

vastus medialis action

extend leg at knee

vastus lateralis origin

greater trochanter and lateral lip of linea aspera of femur

vastus lateralis insertion

base of patella and tibial tuberosity via patellar ligament

vastus lateralis nerve

femoral

vastus lateralis action

extend leg at knee

vastus intermedialis origin

(deep to rectus femoris) anterior and lateral surfaces of body of femur

vastus intermedialis insertion

base of patella and tibial tuberosity via patellar ligament

vastus intermedialis nerve

femoral

vastus intermedialis action

extend leg at knee

adductor compartment

• superficial layer = (lat → med) pectineus, adductor longus, gracilius

• intermediate layer = adductor brevis

• deep layer = adductor magnus

pectineus origin

pectin pubis, superior ramus of pubis

pectineus insertion

pectineal line of femur (distal to lesser troch)

pectineus nerve

femoral (odd! only adductor not innervate by obturator)

pectineus action

adducts and flexes thigh

adductor longus origin

body of pubis inferior to pubic crest

adductor longus insertion

middle third of linea aspera

adductor longus nerve

obturator

adductor longus action

adduct thigh

adductor brevis origin

body and inferior ramus of pubis

adductor brevis insertion

pectineal line and proximal part of linea aspera

adductor brevis nerve

obturator

adductor brevis action

adduct, flex slightly

gracilis origin

body and inferior ramus of pubis g

gracilis insertion

pes anserine → superior part of medial tibia

gracilis nerve

obturator

gracilis action

adduct thigh, helps flex and IR leg at knee

adductor magnus origin

hamstring portion → ischial tuberosity

adductor portion → inferior ramus of pubis, ramus of ischium

adductor magnus insertion

hamstring portion → adductor tubercle

adductor portion → gluteal tuberosity, linea aspera, medial supracondylar line

adductor magnus nerve

hamstring portion → tibial portion of sciatic

adductor portion → obturator

adductor magnus action

hamstring portion → extend thigh

adductor portion → adduct and flex thigh

obturator externus origin

margin of obturator foramen and obturator membrane

obturator externus insertion

trochanteric fossa of femur

obturator externus nerve

obturator

obturator externus action

laterally rotates (ER) thigh and steadies head in acetabulum

adductor canal

= subsartorial canal

start: apex of the femoral triangle

finish: adductor hiatus

contents of adductor canal

femoral artery and vein

purpose of adductor canal

narrow tunnel made of fascia and provides an intermuscular passage for femoral vessels to pass anterior to posterior