Anatomy Quiz 1: Gluteal Region
What could cause a trendelenberg gait?
Damage from an intramuscular injection
Where is the tensor fascia latae (TFL) located?
Directly opposite of the gluteus maximus anteriorly
How could the IT band become tight?
Gluteus Maximus pulling too hard
Where does piriformis exit?
Greater sciatic foramen
Lateral thickening of fascia lata plus tendinous fibers of gluteus maximus
Iliotibial Tract
Separates gluteus maximus from ischial tuberosity
Ischial Bursa
What does the IT band blend with?
Patellar Retinaculum at the knee
Supplies sensation of posterior thigh
Posterior femoral cutaneous n
Ligament deep to gluteus maximus
Sacraltuberous Ligament (ST Ligament)
What goes through the suprapiriformis space?
Superior gluteal neurovasculature
Caused by weakness to gluteus medius and minimus
Trendelenberg Gait
Separates gluteus maximus from greater trochanter
Trochanteric Bursa
What 5 things go through the infrapiriformis space?
~Inferior gluteal a & n ~Internal pudendal a ~Pudendal n ~Sciatic n ~Posterior femoral cutaneous n
Supplies the structure in pelvis and perineum
~Internal pudendal a ~Pudenal n
What is the primary function of the gluteal region?
~Lateral Rotator ~Abductors of hip
What is the origin, insertion, innervation, and function of tensor fascia latae?
~ORIGIN: ASIS & iliac tubercle ~INSERT: IT band ~NERVE: Superior gluteal nerve ~FUNCTION: acts on IT band; abducts hip, medial rotation, flexion of hip
What is the origin, insertion, innervation, and function of gluteus minimus?
~ORIGIN: between anterior and inferior gluteal line ~INSERT: greater trochanter ~NERVE: superior gluteal ~FUNCTION: abducts hip, keeps hip "level" in single limb stance
What is the origin, insertion, innervation, and function of obturator externus?
~ORIGIN: external surface of obturator foramen rim ~INSERT: trochanteric fossa of femur ~NERVE: obturator nerve ~FUNCTION: lateral rotation of hip
What is the origin & insertion of the IT band?
~ORIGIN: iliac tubercle ~INSERT: gerdy's tubercle
What is the origin, insertion, innervation, and function of the gluteus medius?
~ORIGIN: ilium (between posterior and anterior gluteal line) ~INSERT: greater trochanter ~NERVE: superior gluteal ~FUNCTION: abducts hip (distal segment); stabilizes pelvis (proximal segment)- keeps hip "level" in single limb stance
What is the origin, insertion, innervation, and function of obturator internus?
~ORIGIN: intrapelvic surface of obturator foramen ~INSERT: greater trochanter ~INNERVATION: twigs from sacral plexus ~FUNCTION: lateral rotation of hip
What is the origin, insertion, innervation, and function of superior gemellus?
~ORIGIN: ischial spine ~INSERT: greater trochanter ~NERVE: twigs from sacral plexus ~FUNCTION: lateral rotation of hip
What is the origin, insertion, innervation, and function of inferior gemellus?
~ORIGIN: ischial tuberosity ~INSERT: greater trochanter ~NERVE: twigs from sacral plexus ~FUNCTION: lateral rotation of hip
What is the origin, insertion, innervation, and function of quadratus femoris?
~ORIGIN: ischial tuberosity ~INSERT: quadrate tubercle ~NERVE: twigs from sacral plexus ~FUNCTION: lateral rotation of hip
What is the origin, insertion, innervation, and function of piriformis?
~ORIGIN: lateral aspect of sacrum ~INSERT: greater trochanter ~NERVE: twigs from sacral plexus ~FUNCTION: lateral rotation and abduction of hip
What is the origin, insertion, innervation, and function of gluteus maximus?
~ORIGIN: posterior gluteal line of ilium, sacrum & coccyx, sacrotuberous ligament ~INSERT: IT band (superficial fibers), gluteal tuberosity (deep fibers) ~NERVE: inferior gluteal ~FUNCTION: lateral rotation of hip; primary hip extensor, trunk extension
What are the 6 deep lateral rotator muscles?
~Piriformis ~Superior Gemellus ~Inferior Gemellus ~Obturator Internus ~Obturator Externus ~Quadrus Femoris
What 2 ligaments turn the greater sciatic notch into a foramen?
~Sacrospinous ligament ~Sacrotuberous ligament
What are the 2 spaces created as the piriformis exits?
~Suprapiriformis space ~Infrapiriformis space
