Lower limb 2 Flashcards
(41 cards)
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