Manual 114-118: Muscles of Iliac and Gluteal Region Flashcards
origin psoas major
- transverse process lumbar vertebrae
- intervertebral discs last thoracic/all lumbar vertebrae
- tendinous arches
insertion psoas major
- lesser trochanter femur medial to iliacus
- bursa separates tendon from pubis and hip joint capsule
n psoas major
L2/3
function psoas major
flex hip and lumbar spine
where is psoas minor located?
anterior to psoas major
origin psoas minor
T12/L1 vertebrae and intervertebral disc
insertion psoas minor
iliopectineal eminence
iliac fascia
n psoas minor
L1
function psoas minor
flex lumbar spine
origin iliacus
- upper 2/3 iliac fossa
- iliac crest to ASIS/AIIS
- superolateral ala
- sacroiliac lig
- iliolumbar lig
insertion iliacus
base lesser trochanter femur
n iliacus
femoral
function iliacus
flex hip
sometimes there is an iliacus minor (detached portion iliacus)- where does it attach?
0: ASIS
I: intertrochanteric line femur or iliofemoral ligament
vertical fibers b/w iliac crest and superior gluteus maximus
gluteal aponeurosis
origin gluteus maximus
- posterior gluteal line on ilium
- posterior surface of coccyx
- aponeurosis sacrospinalis m
- sacrotuberous lig
- gluteal aponeurosis (covering m body)
insertion gluteus maximus
- IT band (proximal/superficial fibers)
- gluteal tuberosity (deep fibers)
3 bursae on deep surface of gluteus maximus
- greater trochanter (largest)
- ischial tuberosity (most commonly missing)
- b/w tendon gluteus maximus and vastus lateralis
n gluteus maximus
inferior gluteal n
function gluteus maximus
extend thigh
lateral rotate
abduct thigh
origin gluteus medius
- outer ilium b/w iliac crest adn posteriro gluteal line posteriorly
- anterior gluteal line anteriorly
insertion gluteus medius
oblique bony ridge greater trochanter (laterally)
n gluteus medius
superior gluteal n
function gluteus medius
- abduct thigh
- medially rotate an extended hip
- anterior fibers: flex/medial rotate hip
- posterior fibers: lateral rotate hip
- **stabilizes the pelvis in movement