Week 3 Gluteal region Flashcards
superior, inferior, lateral, and medial border of gluteal region
superior: iliac crest
inferior: gluteal fold
lateral: line from ASIS to greater trochanter
medial: natal cleft
sacrotuberous ligament and its attachments
ischial tuberosity
sacrum and coccyx PSIS (posterior superior iliac spine)
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vertical direction
roof and floor of gluteal region
roof: skin
floor: ilium
sacrospinous ligament and its attachments
ischial spine
sacrum and coccyx
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horizontal direction
proximal and distal attachment of gluteus maximus
proximal:
- ilium posterior to posterior gluteal line
- dorsal surface of sacrum and coccyx
- sacrotuberous ligament
distal:
- iliotibial tract (superficial 75%)
- gluteal tuberosity (deep 25%)
innervation of gluteus maximus
inferior gluteal nerve
main action of gluteus maximus
extends hip joint
assist in lateral rotation
proximal and distal attachment of gluteus medius
proximal: external surface of ilium between anterior and posterior gluteal lines
distal: lateral surface of greater trochanter of femur
innervation of gluteus medius
superior gluteal nerve
main action of gluteus medius
abducts and medially rotates hip joint
proximal and distal attachment of gluteus minimus
proximal: external surface of ilium between anterior and inferior gluteal lines
distal: anterior surface of greater trochanter of femur
innervation of gluteus minimus
superior gluteal nerve
main action of gluteus minimus
abducts and medially rotates hip joint
proximal and distal attachment of tensor fasciae latae
proximal:
- anterior superior iliac spine (ASIS)
- anterior part of iliac crest
distal:
- iliotibial tract, attaches to lateral condyle of tibia
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innervation of tensor fasciae latae
superior gluteal nerve
main action of tensor fasciae latae
abducts and medially rotates hip joint
proximal and distal attachment of obturator internus
proximal: pelvic surface of obturator membrane and surrounding bones
distal: medial surface of greater trochanter of femur
proximal and distal attachment of piriformis
proximal:
- anterior surface of sacrum
- sacrotuberous ligament
distal:
- superior border of greater trochanter of femur
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innervation of obturator internus
nerve to obturator internus
main action of piriformis
laterally rotates extended hip joint
stabilise hip joint
abducts hip joint when flexed
innveration of piriformis
branches of anterior rami S1 and S2
main action of obturator internus
laterally rotates extended hip joint
stabilise hip joint
abduct hip joint when flexed
proximal and distal attachment of superior gemelli
proximal: ischial spine
distal: medial surface of greater trochanter of femur
innervation of superior gemelli
nerve to obturator internus
main action of superior gemelli
laterally rotates extended hip joint
stabilise hip joint
abduct hip joint when flexed
proximal and distal attachment of inferior gemelli
proximal: ischial tuberosity
distal: medial surface of greater trochanter of femur
innervation of inferior gemelli
nerve to quadratus femoris
proximal and distal attachment of quadratus femoris
proximal: lateral border of ischial tuberosity
distal: intertrochanteric crest of femur
main action of inferior gemelli
laterally rotates extended hip joint
stabilise hip joint
abduct hip joint when flexed
innervation of quadratus femoris
nerve to quadratus femoris
main action of quadratus femoris
laterally rotates hip joint
stabilizes hip joint
which muscles are attached to greater trochanter?
gluteus medius
gluteus minimus
piriformis
obturator internus
obturator externus
superior and inferior gemelli
motor and sensory nerve supply to the gluteal region
inferior gluteal nerve
superior gluteal nerve
nerve to obturator internus
nerve to quadratus femoris
posterior cutaneous nerve of the thigh
main blood supply to the gluteal region
superior gluteal vessels
inferior gluteal vessels
contents of lesser sciatic foremen
obturator internus
contents of greater sciatic foremen (above and below piriformis)
above:
superior gluteal nerve and vessels
below:
inferior gluteal nerve and vessels
posterior cutaneous nerve of thigh
sciatic nerve
