Gluteal Region Flashcards
Name the gluteal muscles
- gluteus maximus
- gluteus medius
- gluteus minimus
- Tensor of fascia lata
name the small lateral rotators of hip
- piriformis
- obturator internus
- gamelli (superior and inferior)
- quadratus femoris
where does the gluteal region receive innervation from
sacral plexus
- anterior rami (L4-L5 and S1-S4)
-sciatic nerve
- superior and inferior gluteal nerves
- anterior rami L4-L5 = Lumosacral trunk
muscle(s) inferior gluteal nerve innervates
gluteus maximus
muscle(s) superior gluteal nerve innvervates
- gluteus medius
- gluteus minimus
- tensor of fascia lata
structure between tensor of fascia lata and lateral condyle of tibia
iliotibial tract (IT band)
Lines on the iliuem
- inferior gluteal line
- posterior gluteal line
- anterior gluteal line
structure(s) entering the gluteal region via the greater sciatic foramen
- piriformis
- sciatic nerve
- superior gluteal nerve/artery
- inferior gluteal nerve/artery
structure(s) entering the gluteal region via the lesser sciatic foramen
obturator internus
boney landmarks/ points of attachment on ischium
- ischial spine
- ischial tuberosity
boney landmarks/ points of attachment on femur
- greater trochanter
- intertrochanteric crest
- quadrate tubercle
- lesser trochanter
- gluteal tuberosity
- linea aspera
origin and insertion of gluteus maximus
origin –> posterior to posterior gluteal line (ilium), sacrum, ST ligament
insertion –> gluteal tuberosity (superior aspect of linea aspersion), lateral condyle of tibia via iliotibial tract
action of gluteus maximus
- extension of femur
- lateral rotation of femur
- abduction of femur (upper fibers)
- adduction of femur (lower fibers)
innervation of gluteus maximus
inferior gluteal nerve
origin and insertion of gluteus medius
origin –> ilium: between anterior and posterior gluteal lines
insertion –> greater trochanter (lateral aspect)
actions of gluteus medius
- abduction of femur
- medial rotation at hip (anterior fibers)
- hip flexion (anterior fibers)
- lateral rotation at hip (posterior fibers)
- hip extension (posterior fibers)
-steadies pelvis when opposite limb is raised
innervation of gluteus medius
superior gluteal nerve
origin and insertion of gluteus minimus
origin –> ilium: between anterior and inferior gluteal lines
insertion –> greater trochanter: anterior aspect
action of gluteus minimus
- abduction of femur
- medial rotation at hip
- hip flexion
- steadies pelvis when opposite limb is raised
innervation of gluteus minimus
superior gluteal nerve
what is trandelenberg gait
hip of the unaffected side drops due to weak hip abductors
origin and insertion of tensor of fascia lata
origin –> ASIS, anterior aspect of iliac crest
insertion –> lateral condyle of tibia via iliotibial tract
action of tensor of fascia lata
- abduction of femur
- medial rotation of femur
- flexion at hip
innervation of tensor of fascia lata
superior gluteal nerve
what is piriformis a landmark for
superior border –> superior gluteal nerve and artery
inferior border –> inferior gluteal nerve and artery
what muscles are innervated by the superior gluteal nerve
- gluteus medius
- gluteus minimus
- tensor of fascia lata
what muscles are innervated by the inferior gluteal nerve
gluteus maxiumus
muscles assisting in abduction of thigh
- piriformis
- superior gemullus
- obturator internus
- inferior gamellus
action of small lateral rotators of femur
- lateral rotation at hip joint
- stabilize head of femur in acetabulum
muscle attachment of piriformus, obturator internus/externus, gamullus superior/inferior
trochanteric fossa
