pelvic girdle

Question 1

pelvic bone articulation with sacrum

Answer 1

anteriorly: pubic symphysis
posteriorly: SI joint

Question 2

iliac crest located at

Answer 2

L4 vertebrae

Question 3

PSIS located at

Answer 3

S2

Question 4

movements of SI joint

Answer 4

flexion: ant mvmt of promontory, posterior of coccyx
extension: opposite

Question 5

pelvic wall muscle functions

Answer 5

lateral hip rotation

Question 6

pelvic wall muscles

Answer 6

piriformis

obturator internus: tendon in btw sup and inf gemelli

Question 7

pelvic floor muscles

Answer 7

levator ani (pubococcygeus and iliococcygeus)
coccygeus

Question 8

function of pelvic floor muscles

Answer 8

support for pelvic organs

sphincter control of the bladder, rectum, vag (kegels)

Question 9

pubic symphysis

Answer 9

stable joint between the bodies of the right and left pubis bones. held together by a fibrocartilagenous disc. superior and inferior pelvic ligaments support it.

ligs relax during pregnancy and there is slight movement to help the pelvis adapt to the size of the fetus

Question 10

ligs of the SI joint

Answer 10

anterior sacroiliac: support ant portion
dorsal SI lig and interosseous lig: support the posterior portion
iliolumbar: connects transverse L4 with iliac crest. L5 ventral ramus can get trapped under
sacrotuberous lig: sacrum to ischial tuberosity
sacrospinous: sacrum to ischial spine

Question 11

neutral posture position

Answer 11

ASIS and pubic tubercles aligned in vertical plane
ASIS on both sides aligned in horizontal plane
iliac crests even

Question 12

anterior pelvic tilt and increased lumbar lordosis

Answer 12

action of erector spinae (upward pull on sacrum and ilium) and iliopsoas (pulls down on lumbar spine)
tilt brings the hip into flexion by bringing the pelvis close to the anterior portion of the thigh

Question 13

posterior pelvic tilt and decreased lumbar curve

Answer 13

anterior abdominal wall muscles (upwardly pull on the anterior part of the pelvis/pubic bone) and hip extensors (pull down on ischium

Question 14

lateral pelvic tilt

Answer 14

crests not level on both sides
abductors, glut med and min pull down on iliac crest

opposite lat abdominal muscles, ext and int obliques, transversis abdominus, quadratus lumborum, and adductors elevate the iliac crest on the opposite side
pelvis will tilt down on abductor side

Question 15

posterior back muscle effect on pelvis

Answer 15

posteriorly and upwardly pull
anterior pelvic tilt
increased lordosis

Question 16

anterior abdominal muscle effect on pelvis

Answer 16

anterior and upwardly pull
post pelvic tilt
flat back, decreased lordosis

Question 17

hip extensor muscle effect on pelvis

Answer 17

(glut med and min)
laterally and downwardly pull on same side
ipsilateral tilt downward

Question 18

lateral abdominal muscle effect on pelvis

Answer 18

(int oblique, transversus abdominus)
medial and upward tilt on same side
contralateral tilt down

Question 19

psoas muscle tilt

Answer 19

anterior

Question 20

quadriceps muscle tilt

Answer 20

anterior

Question 21

hamstrings muscle tilt

Answer 21

posterior

Question 22

rectus abdominus muscle tilt

Answer 22

posterior