Spinal Lab 2

Question 0

What do the zygoapophyseal joints restrict?

Answer 0

Restricts extension & rotation at bony end range

Question 1

What shape or letter are the zygoapophyseal joints (facets)?

Answer 1

‘C’ shaped

Question 2

What do the zygoapophyseal joints allow for in the L-Spine?

Answer 2

Flexion

Question 3

How are L5 & S1 zygoapophyseal facets different?

Answer 3

S1 are larger allowing for weight bearing

The sacrum is pointed anteriorly & the spine is posterior, this blocks L5 from forward slippage

Question 4

What movements occur at the SI joint?

Answer 4

Rotation
Superior/inferior translation
Anterior/posterior translation

Question 5

Describe the shape of the SI joint
What does it resist?
What movements does it allow for?

Answer 5

Auricular
Knuckle shaped
Resists superior & inferior translation
Allows for rotation when walking

Question 6

most fibres of the interosseous ligament are __ in direction

Answer 6

horizontal

Question 7

with the forward flexion test the side that moves up is actually the __ side not the __ side. It is the __ locking onto the __ on that side.

Answer 7

tight side not the lax side. It is the innominate locking onto the sacrum on that side

Question 8

what muscle helps assist the sacrotuberous ligament from preventing the sacrum from rotating anteriorly?

Answer 8

bicep femoris

Question 9

with the sitting forward flexion test the innominate is locked in because the patient is sitting on it therefore its testing the __

Answer 9

sacrum

Question 10

how do you know whether to treat the inflare or outflare?

Answer 10

treat the side of disfunction based on the forward flexion test

Question 11

what is the fibre direction for the anterior, superior and posterior fibres of the iliolumbar ligament?

Answer 11

transverse

Question 12

what movement does the anterior, superior and posterior fibres of the iliolumbar ligament prevent?

Answer 12

side bending

Question 13

how do you test the anterior, posterior and superior fibres of the iliolumbar ligament?

Answer 13

patients lies on side, therapist landmarks L5, slide in to the base of the SP and push vertebrae down toward table while stabilizing the innominate with the free hand

Question 14

why is the vertebral body concave?

Answer 14

weight bearing

Question 15

the __ forms the superior and inferior portion of the vertebral foramen

Answer 15

pedicle

Question 16

the ___ + ___ form the neural arch

Answer 16

pedicle + lamina

Question 17

___ combine to form the SP

Answer 17

lamina

Question 18

the ___ of the facets will dictate what movement they are guiding

Answer 18

orientation

Question 19

Pars interarticular fracture occurs obliquely between ___ and __

Answer 19

superior and inferior articular facets

Question 21

** Why is the articular facets of L1 different then L5-S1?

Answer 21

To prevent anterior translation of L5

Question 22

Why is a diagonal/oblique chain so important to everyday life?

Answer 22

chain will assist in rotation at the hips which allows for proper gait mechanics

Question 23

what impact would jumping have on the symphysis pubis, if you landed on one foot?

Answer 23

landing forces can be detrimental because of superior translation

Question 24

What forces can the symphysis pubis joint resist, which does it allow for?

Answer 24

resists - shearing (superior & inferior)

allows - rotation & compression

Question 25

What movement would stress the anterior SI ligament?

Answer 25

• hip extension

- distraction

Question 26

What happens to the SIJ if hamstrings are more active than the glutes?

Answer 26

hamstrings will create a shearing force on the SIJ.

Glutes need to fire before hamstrings to reinforce the joint

Question 27

Why is the dorsal SI ligament important for stability & mobility of the SIJ?

Answer 27

stability: holds the ilium to the sacrum (reinforcing the auricular surfaces)
mobility: limited but definite rotation

Question 28

what is the role of the iliolumbar ligament?

Answer 28

• connect L4/L5 vertebrae to the ilium
• strengthen lumbrosacral jt.
• prevents anterior translation of L4/L5
• resists side bending

Question 29

What muscle is associated with the iliolumbar ligament?

Answer 29

Quadratus Lumborum

Question 30

if the ilium is restricted what impact would it have on the iliolumbar ligament?

Answer 30

iliolumbar ligament will also be restricted, which will attribute to stiffness/restriction of the QL

Question 31

The Sacrotuberous ligament maintains stability of the SIJ & pelvis during what movement?

What is it’s main role?

Answer 31

Helps keep the pelvic girdle intact while resisting rotation with hip flexion

Force attenuation