Sacral Mechanics and Motion Flashcards Preview

Block 6 > Sacral Mechanics and Motion > Flashcards

Flashcards in Sacral Mechanics and Motion Deck (12):
1

What restricts posterior motion?

sacroiliac ligaments

2

What restricts anterior motion?

sacrotuberous/sacrospinus ligaments

3

Shaped of the sacroiliac joint?

C or L shaped

4

S1-4 and S5 have parasympathetic innervation from what? Sympathetic?

pelvic splanchnic nerves
sacral splanchnic nerves

5

Lumbar flexion = sacral _____
Lumbar extension = sacral ______
Lumbar rotation left = sacral rotation _____

extension
flexion
right

6

Shifting weight to one leg causes an ______ oblique axis.

ipsilateral
right leg = right oblique axis

7

Standing flexion test, seated flexion test, and ASIS compression test apply to what?

the sacroiliac joint

8

What does the backward bending test tell you?

determines if one side of the sacral base is posterior and resists the anterior motion induced by backward bending

9

Early stance phase: At heel strike the hamstrings tighten and pull the ____ innominate posterior.

ipsilateral

10

Late stance phase: As the quadriceps tighten at toe off, the pull the _____ innominate anterior.

ipsilateral

11

As the body's center of gravity shifts towards the supporting leg, the lumbar spine sidebends _____ and rotates ___ from the weight bearing leg.

towards, away

12

Initiated at right heel strike and continuing into early stance phase: the right innominate rotates _____, the upper pole of the right SI joint ______, the sacrum rotates _____ around a _____ oblique axis.

posteriorly, tightens, right, right

L5 is N SR RL - the sacrum and L5 are rotated in opposite directions