Muscles of the Gluteal Region Flashcards
What are 2 main ligaments of the gluteal region?
sacrotuberous ligament
sacrospinous ligament
What are the 2 sciatic foramina?
Greater/Lesser sciatic foramina
What is a main tract found in the gluteal region?
iliotibial tract (IT)
What is a major deep, membranous fascia covering the muscles of the thigh?
Fascia Lata
What does the sacrotuberous ligament convert the lesser sciatic notch into?
lesser sciatic foramen
What does the sacrospinous ligament convert the greater sciatic notch into?
greater sciatic foramen
What structures pass through the greater sciatic foramen?
piriformis muscle
sup/inf gluteal vessels/nerves
internal pudendal vessels
pudendal nerve
sciatic nerve
post. femoral cutaneous nerve
nerves to obturator internus and quadratus femoris muscles
What structures pass through the lesser sciatic foramen?
tendon of obturator internus
never to obturator internus
internal pudendal vessels
pudendal nerve
What structures go through both sciatic foramina?
pudendal nerve
internal pudendal vessels
nerve to obturator internus
What muscles insert into the iliotibial tract?
gluteus maximus (75%) tensor fasciae latae (25%)
What does the IT help with?
form the fibrous capsule of the knee joint
maintaining posture and locomotion
Of what structure is the IT a thick lateral portion?
fascia lata
How many muscles are there in the gluteal region?
9
What is the blood supply, innervation and action of the gluteus maximus muscle?
inferior gluteal artery/nerve
extends and rotates thigh laterally
Where does the gluteus maximus insert?
gluteal tuberosity, iliotibial tract
What is the innervation, blood supply, and action of the gluteus medius muscle?
sup gluteal artery/nerve
ABducts and rotates thigh medially, stabilizes pelvis
What is the innervation, blood supply, and action of the gluteus minimus muscle?
sup gluteal artery/nerve
ABducts and rotates thigh medially
Where do the gluteus medius and minimus insert?
greater trochanter
What is the innervation, blood supply, and action of the tensor fasciae latae?
sup gluteal artery/nerve
flexes, ABducts, and rotates thigh medially
Where does the tensor fasciae latae insert?
iliotibial tract
What is the innervation, blood supply, and action of the piriformis muscle?
sup gluteal artery sacral nerve (S1-S2)
rotates thigh laterally
Where does the piriformis insert?
upper end of greater trochanter
What is the innervation, blood supply, and action of the obturator internus muscle?
sup gluteal artery
nerve to obturator internus
ABducts and rotates thigh laterally
Where does the obturator internus insert?
greater trochanter
What is the innervation, blood supply, and action of the superior gemellus muscle?
sup gluteal artery
nerve to obturator internus
rotates thigh laterally
Where does the superior gemellus insert?
obturator internus tendon
What is the innervation, blood supply, and action of the inferior gemellus muscle?
sup gluteal artery
nerve to quadratus femoris
rotates thigh laterally
Where does the inferior gemellus insert?
obturator internus tendon
What is the innervation, blood supply, and action of the quadratus femoris muscle?
superior gluteal artery
nerve to quadratus femoris
rotates thigh laterally
Where does quadratus femoris insert?
intertrochanteric crest
