Lab 8: Pelvis, Hip, Gluteal, and Thigh Muscle

tensor fascia lata (TFL)

tensor fascia lata origin

anterior superior iliac spine (ASIS) and outer lip of the anterior iliac crest

tensor fascia lata insertion

Gerdy’s tubercle via IT band

tensor fascia lata action

hip flexion, abduction, internal rotation

gluteus maximus

gluteus maximus origin

sacrum, sarcotubial ligament, coccyx

gluteus maximus insertion

gluteal tuberosity, femor, IT band

gluteus maximus action

hip extension and external rotation (because of how fibers run on angle)

gluteus medius

gluteus medius origin

anterior and posterior gluteal line

gluteus medius insertion

lateral aspect of greater trochanter

gluteus medius action

hip abduction, internal rotation (just anterior fibers), external rotation (just posterior fibers)

green

gluteus minimus

gluteus minimus origin

between anterior and inferior gluteal line

gluteus minimus insertion

lateral aspect of greater trochanter

gluteus minimus action

hip abduction primarily, internal rotation secondarily

green

obturator internus

obturator internus origin

(inside of abductor foramen) inner surface of pelvic bone and obturator membrane

obturator internus insertion

medial surface of greater trochanter of the femur

obturator internus action

hip external rotation

green

superior gemellus

What are the four GO-GO muscles

superior gemellus, obturator internus, inferior gemellus, obturator externus

superior gemellus origin

ischial spine

superior gemellus insertion

trochanteric fossa

superior gemellus action

hip external rotation

What do the superior gemellus, obturator internus, and inferior gemellus blend to form?

triceps coxae

what comes through the notch between the superior and inferior gemelli?

obturator internus

inferior gemellus

inferior gemellus origin

ischial tuberosity

inferior gemellus insertion

trochanteric fossa

inferior gemellus action

hip external rotation

quadratus femoris

quadratus femoris origin

ischial tuberosity

quadratus femoris insertion

intertrochanteric line

quadratus femoris action

hip external rotation

piriformis

piriformis origin

lateral sacrum

piriformis insertion

superior aspect of greater trochanter

piriformis action

hip external rotation

psoas major

what makes up the iliopsoas

psoas major and iliacus

iliopsoas origin

lumbar spine

iliopsoas insertion

lesser trochanter

iliopsoas action

hip flexion

psoas major origin

vertebral bodies of T12 to L5, corresponding intervertebral discs, transverse process of the lumbar vertebrae

psoas major insertion

lesser trochanter

psoas major action

hip flexion

green

iliacus

iliacus origin

inside of ilium; iliac fossa

iliacus insertion

lesser trochanter

iliacus action

hip flexion and external rotation

pectineus

pectineus origin

superior ramus on pubis on pectinal line

pectineus insertion

pectinal line on femor (posterior aspect)

pectineus action

hip flexion and adduction

sartorius

sartorius origin

ASIS

sartorius insertion

pes anserinus

sartorius action

hip flexion & external rotation, knee flexion

rectus femoris

rectus femoris origin

anterior inferior iliac spine (AIIS)

rectus femoris insertion

goes through patella to insert at patellar ligament

how many joints does the rectus femoris cross

2

what is the quadricep femoris made of

rectus femoris and vastus group

rectus femoris action

hip flexion and knee extension

green

vastus lateralis

vastus lateralis origin

lateral lip of linear aspera to the greater trochanter

vastus lateralis insertion

patellar ligament to tibial tuberosity

vastus lateralis action

knee extension

green

vastus medialis

vastus medialis origin

medial lip of linear aspera to trochanteric line

vastus medalis insertion

medial border of the patella and the quadriceps tendon

vastus medalis action

knee extension

vastus intermedius

vastus intermedialis origin

anterior shaft of femur

vastus intermedialis insertion

base of patella via deep portion of quadriceps tendon

vastus intermedialis action

knee extension

adductor longus

adductor longus origin

body of pubis inferior to pubic crest

adductor longus insertion

middle third of linea aspera on femur (posterior side of femur)

adductor longus action

hip adduction

adductor brevis

adductor brevis origin

ramus of pubic bone

adductor brevis insertion

proximal linea aspera of femur

adductor brevis action

hip adduction

what are the muscles of the vastus group

vastus lateralis, vastus medialis, vastus intermedius

what are the two parts of the adductor magnus

hamstring and adductor part

what is between the 2 adductor magnus parts

adducter hiatus (femoral artery goes through and becomes oblitial artery)

adductor magnus

where does the adductor part of the adductor magnus originate

inferior ramus pubis and ischial ramus

where does the adductor part of the adductor magnus insert

gluteal tuberosity and linea aspera and medial supercondylar line

what does the adductor magnus do

hip adduction

where does the hamstring part of the adductor magnus insert

adductor tubercle

where does the hamstring part of the adductor magnus originate

ischial tuberosity

gracilis

gracilis origin

body and inferior ramus of pubis bone

gracilis insertion

pens anserium

gracilis action

hip adduction and knee flexion & medial rotation when flexed

obturator externus

obturator externus origin

obturator foramen membrane (anterior portion of pelvis)