sacroillaic joint dysfunction and pririformis syndrome

Question 1

what is the main function of the sij

Answer 1

transmit force from axial skeleton to the lower limbs and vice versa

Question 2

ligaments involved

Answer 2

ant sacroilliac.most injured often and its a common source of pain cause of its thiness

sacroyuberous.
sacropinous
interosseus sacroilliac
posterior dorsal sacroilliac

Question 3

the sacroilliac joint receives its innervation from what nerve

Answer 3

ventral
rami of L4 and L5, superior
gluteal nerve, and dorsal rami
of L5-S2.

Question 4

what is form closure

Answer 4

the mechanism by which the
ligaments and muscles
achieve stability within the
joint

Question 5

what are the movements of the sij

Answer 5

nutation
when the sacrum
is rotated forwards relative to the iliac
bones

counter nutation
when the
sacrum is rotated backward relative
to the iliac bones.

Question 6

what happens during nutation

Answer 6

the posterior parts of the illiac bones are compressed into a keystone like shape and the joint is in the locked and close packed position
and this normally occurs during increased load bearing

Question 7

what are the nutation muscles

Answer 7

erector spinae and adductor

Question 8

what are the counter nutation muscles

Answer 8

pectineus
adductor longus and brevis
latissimus dorsi