Structural Kinesiology: Hip and Pelvis Quiz 5

lumbar plexus

a large nerve plexus formed by ventral roots of L1-L4

femoral nerve

supplies hip flexor and anterior thigh muscles

obturator muscles

supplies adductor muscles

abdominal artery--common iliac artery--external iliac artery--femoral artery (when passes under inguinal ligaments and enters femoral triangle

name the arteries that supply blood to the lower limbs

adductor longus -medially

sartorius-laterally

inguinal ligament- superiorly

what borders the femoral triangle medially, laterally and superiorly?

medial and lateral circumflex femoral arteries

What arteries arise from a branch off the femoral artery and supply the hip joint and surrounding soft tissues?

psoas major O: lumbar vertebrae and discs

iliacus O: iliac fossa (inner surface of ilium)

I: lesser trochanter of femur

A: hip flexion, anterior pelvic rotation

active when walking during the swinging phase,

and it helps in climbing the stairs

Iliopsoas OIA

when is this muscle functionally active?

O: anterior interior iliac spine and ilium superior to acetabulum

I: superior aspect of patella and patellar tendon to tibial tuberosity

A: hip flexion, knee extension, anterior pelvic rotation

Rectus Femoris OIA

O: anterior superior iliac spine (ASIS)

I: anterior medial surface of tibia, inferior to tibial condyle

A: hip flexion, abduction, external rotation, anterior pelvic rotation, assits in knee flexion and internal rotation

Sartorius OIA

sacral plexus

a large plexus formed by the lumbosacral trunk and the ventral roots of S1-S4

Superior Gluteal Nerve

supplies gluteus medias and minimus and tensor fascia lata

inferior gluteal nerve

supplies gluteus maximus

sciatic nerve

supplies posterior(hamstring) muscles

O: posterior surfaces of ilium, sacrum, and coccyx

I: superficial-iliotibial band/tract

deep-gluteal tuberosity of the femur

A: hip extensor, external rotation, posterior pelvic rotation, assists with abduction

N:inferior gluteal nerve

Gluteus Maximus OIAN

external rotation or/and abduction

By adding what two movements to active hip extension increase the electrical activity of gluteus maximus?

General origin: lateral (outer) surface of the ilium

Gluteus Medius O: just inferior to iliac crest

Gluteus Minimus O: inferior to origin of gluteus medius

I: greater trochanter

A:all fibers- hip abduction

anterior- hip internal rotation

posterior- hip external rotation

N: superior gluteal nerve

Gluteus Minimus and Medius OIAN

the pelvis will drop when doing single leg stances and lower extremities duirng single leg closed chain exercises will not be aligned

What happens when there is a weakness in the gluteus medius and minimus?

O: outer surface of anterior iliac crest

I: iliotibial tract/band

N: superior gluteal nerve

A: flexion, abduction, internal rotation

tensor fascia lata OIAN