Gluteal region Flashcards
gluteal muscles: and action
- gluteus maximus (extend, laterally rotate thigh)
- gluteus medius (abducts thigh)
- gluteus minimus (abducts thigh)
list lateral rotators of thigh:
Inf gemellus
Quadratus femoris
Obturator externus
Obturator internus
Piriformis
Superior gemellus
gluteus maximus: location
posterior superficial
gluteus maximus: origin
ext surface of illium post to post gluteal line
- fascia of erector spinae, sacrum and coccyx
- sacrotuberous lig
gluteus maximus: insertion
- iliotibial tract
- gluteal tuberosity of femur
gluteus maximus: innervation
inferior gluteal n
gluteus maximus: action
- extension
- lateral rotation
- abduction of thigh at the hip joint
- stabilises hip joint
gluteus medius: location
deep to glute max
gluteus medius: origin
ext surface of ilium btw anterior and posterior gluteal lines
gluteus medius: insertion
lateral surface of greater trochanter
gluteus medius: innervation
superior gluteal n
gluteus medius: action
- abduction
- medial rotation of thigh at hip j
- prevents pelvic drop during walking
gluteus minimus: location
deep to glute max
gluteus minimus: origin
external surface of ilium btw inferior/ anterior gluteal lines
gluteus minimus: insertion
anterolateral aspect of greater trochanter
gluteus minimus: innervation
superior gluteal
gluteus minimus: action
- abduction
- medial rotation of thigh at hip j
- prevents pelvic drop during walking
piriformis: location
deep to glute max
piriformis: origin
anterior surface of sacrum
piriformis: insertion
superior border of greater trochanter
piriformis: innervation
branches:
- L5
- S1
- S2
piriformis: action
lateral rotation of extended (?)
- abduction of flexed thigh at hip joint
obturator internus: location
posterior
obturator internus: origin
obturator membrane, and surrounding bone
obturator internus: insertion
medial surface of greater trochanter
obturator internus: innervation
nerve to obturator internus
obturator internus: action
- lateral rotation of the extended
- abduction of flexed thigh and hip joint
gemellus superior: location
superior to ob internus
gemellus superior: origin
ischial spine
gemellus superior: insertion
medial surface of greater trochanter
gemellus superior: innervation
nerve to ob. internus
gemellus superior: action
- lateral rotation of the extended
- abduction of flexed thigh at hip joint
gemellus inferior: location
inferior to ob. internus
gemellus inferior: origin
superio aspect of ischial tuberosity
gemellus inferior: insertion
medial surface of greater trochanter
gemellus inferior: innervation
nerve to quadratus femoris
gemellus inferior: action
- lateral rotation of extended,
- abduction o flexed thigh at hip joint
quadratus femoris: location
post, inferior
quadratus femoris: origin
lateral aspect of ischial tuberosity
quadratus femoris: insertion
quadrate tubercle on intertrochanteric crest
quadratus femoris: innervation
nerve to quadratus femoris
quadratus femoris: action
lateral rotation of thigh at hip joint
obturator externus: location
deep, posterior
obturator externus: origin
obturator membrane and surrounding bone
obturator externus: insertion
trochanteric fossa
obturator externus: innervation
obturator n
obturator externus: action
lateral rotation of thigh at hip joint
