SI and Hip joint Flashcards
(29 cards)
SI (sacroiliac joint) what shape
L-shaped
anterior part of SI joint is what type of joint
synovial
posterior part of SI joint is what type of joint
syndesmosis, fibrous joint
Posterior SI ligament connects ?
intermediate/lateral crest of sacrum & S1/2 to PSIS and internal lip of iliac crest
Iliolumbar ligament connects?
L4/5 to iliac crest. sacral ala, and anterior SI ligament
Iliolumbar ligament primarily supports ?
lumbosacral joint (L5/S1)
sacrotuberous ligament broad attachment origin?
PSIS
sacrotuberous ligament attachment (insertion)
Ischial Tuberosity
what muscles attach to sacrotuberous ligament
semtitendinosous, biceps femoris, piriformis, Gluteus maximus
sacrospinous ligaments attach from ? to ?
ischial spine to lateral margin of sacrum/coccyx
what is nutation?
anterior/inferior motion of sacrum so posterior/superior movement of coccyx
what resists nutation?
sacrospinous, sacrotuberous and anterior and interosseous SI ligaments
what is counternutation?
posterior/superior sacrum
anterior/inferior coccyx
what resists counternutation
long posterior SI ligament
Blood supply of SI joint
Superior gluteal
Lateral sacral
iliolumbar
innervation of SI joint
Primarily dorsal rami L4-S3
ventral rami L5-S2
Superior gluteal nerve
Hip joint has what kind of motion
triplanar
in anatomical position, hip joint is more limited in which movements
adduction
internal rotation
extension
lateral rotation is stronger than medial rotation
what muscles attach to hip capsule
glut. minimus iliocapsularis indirect head of rectus femoris obturator externus triceps coxae (obturator internus, superior/inferior gemelli)
triceps coxae is made of
obturator internus
superior gemellus
inferior gemellus
iliofemoral, pubofemoral, and ischiofemoral resist?
lateral extension and anterior translation of femoral head
iliofemoral is also known as
Ligament of Bieglow
what is the strongest ligament in hip
Ligament of Bieglow (iliofemoral- Y shaped ligament)
Ilifemoral origin:
AIIS/iliac portion of acetabular rim