Lower limb 2 Flashcards
Pelvic girdle
bony ring consisting of sacrum and Left and right hip bones, joined anteriorly at pubic symphysis and posteriorly by SI joints
Sciatic foramen for structures entering/leaving pelvis
greater
sciatic foramen for structures entering/leaving perineum
lesser
How many layers of gluteal muscles?
2 - superficial and deep
4 muscles of superficial layer of gluteal muscles
gluteus maximus
gluteus medius
gluteus minimus
TFL
4 muscles of deep layer of gluteal muscles
piriformis
obturator internus
superior and inferior gemelli
quadratus femoris
What is fascial lata?
deep fascia of the thigh
2 muscles attached to iliotibial tract
TFL
gluteus maximus
Actions of gluteus maximus
extend the hip and lateral rotation
Innervation of gluteus maximus
inferior gluteal nerve (L5-S2)
gluteus medius+ minimus and TFL action
abduction and medial rotators of hip
innervation of gluteus medius+ minimus and TFL
superior gluteal nerve (l4-s1)
deep gluteal muscles action
stabilise hip joint and lateral rotators
Anterior to which muscle is sacral plexus found?
piriformis
Sacral plexus is formed by what?
ventral rami of L4-S4
2 main branches of sacral plexus
sciatic
pudendal
What is the lumbosacral trunk formed by?
union of L4+5
superior gluteal nerve roots
L4-S1
Inferior gluteal nerve roots
L5-S2
2 branches of sciatic nerve
common fibular
tibial
How many heads does biceps femoris have?
2
Hamstrings
long and short head of biceps femoris
semitendinous
semimembranosus
action of hamstrings on knee and hip
hip - extend
knee - flex
Which nerve innervates posterior thigh muscles?
sciatic