Gluteal Region Flashcards
what are the borders of the gluteal region?
iliac crest, gluteal sulcus (groove beneath gluteal fold)
what is the cutaneous nerve of gluteal region?
cluneal (op. sp. clunial) n.
deep nerves of gluteal region?
sacral plexus branches (leave pelvis via sciatic foramen)
muscle that exits greater sciatic foramen?
piriformis m.
what nerves exit the greater sciatic foramen?
sciatic n., posterior femoral cutaneous n., obturator internus/superior gemellus n.
what artery and nerve leave the greater sciatic foramen together?
pudendal n. and internal pudendal a.
what is the only thing to leave the lesser sciatic foramen?
obturator internus
where does the obturator internus/superior gemellus n enter?
reenters pelvis via lesser sciatic foramen
mnemonic for pudendal n?
S2,3,4 keeps your penis off the floor
where do the arteries that supply the gluteal region arise from?
internal iliac a.
what does the inferior gluteal artery supply?
gluteus maximus, small lateral rotators, superior hamstrings
what may provide blood to the leg if the femoral a. is occluded or severed?
cruicate anastomosis, uses descending branch of something? femoral
primary function of gluteus maximus?
chief extensor of the thigh and lateral rotation; slight extensor of leg when working with tensor fascia lata
what innervates gluteus maximus?
inferior gluteal n.
proximal attachment of gluteus maximus?
posterior gluteal line
insertion of gluteus maximus?
gluteal tuberosity on femur
primary function of gluteus medius and minims?
thigh abduction and medial rotation (particularly gluteus minimus)
what innervates gluteus medius and minimus?
superior gluteal n.
innervation of tensor fascia lata?
superior gluteal n.
function of tensor fascia lata?
abducts, medially rotates, and flexes thigh; slight extension of knee along with gluteus maximus
secondary function of tensor fascia kata?
stores kinetic energy
functions of IT Band?
abducts slightly, laterally stabilizes knee, extends leg, compensate for quad paralysis via gluteus maximus flexion, pulls patella laterally, antagonist of vastus medial is, and synergist with flexing vast us laterals for this action, stretch to treat chondromalacia patella
how does an injury to gluteus medius and minims present as?
gluteal gait or Duchenne’s limb; positive Trendelenburg’s sign
what is the nerve injured in Duchenne’s?
superior gluteal n.
what effect does Duchenne’s have on patient?
pt loses steady action of gluteus medius and minims; lean toward side effected during stance phase of gait
innervation of obturator internus?
nerve to obturator internus
what are the superior and inferior gemelli referred to as?
extrapelvic parts of obturator interns; with obturator interns form the triceps coxae
attachments of obturator externs?
external margins of obturator foramen, trochanteric fossa
innervation to obturator externus?
obturator n.
which gluteal muscles are vertically oriented?
gluteus maximus, piriformis, gluteus medius, gluteus minimus, tensor fascia latae
which gluteal muscles are horizontally oriented?
gemelli, obturator internus, quadratus femoris
medially rotators of the thigh?
tensor fasciae latae, gluteus minimus, gluteus medius
