Lumbar Spine Flashcards

1
Q

l1-l5 is progressively blank shaped because blank body is larger than blank

A

wedge, anterior, posterior

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2
Q

spinous processes of lumbar are blank from lateral view

A

broad

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3
Q

lumbar spinous processes are blank from superior view

A

thin

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4
Q

tp of lumbar corresepond to blank level of sp

A

same level

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5
Q

superior facet is blank and faces blank and blank

A

concave, medially, slightly posterior

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6
Q

inferior facet is blank and faces blank and blank

A

convex, laterally, slightly anterior

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7
Q

facets of lumbar lie in blank plane progressively toward l5 at blank

A

sagittal, 90%

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8
Q

l5 has blank to sacrum in this

A

fused, sacralization

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9
Q

degenerative blank disease usually comes before blank

A

disc, joint

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10
Q

ligament that narrows to non existence in the lumbar spine

A

pll

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11
Q

supraspinous connects blank to blank

A

sp tip to tip

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12
Q

5 bands extending from l4/l5 tp’s to iliac crests just above the psis

A

iliolumbar ligaments

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13
Q

iliolumbar ligaments are very blank and prevent blank displacement of l4 and l5

A

strong, anterior

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14
Q

superficial to deep ligaments of spine

A

supraspinous, interspinous, ligamentum flavum

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15
Q

ligamentum flavum is high in blank content which makes it yellow

A

elastin

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16
Q

ligamentum flavum can blank which causes stenosing

A

hypertrophy

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17
Q

fracture of vertebral end plate into body above or below

A

schmorl’s node

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18
Q

schmorls node can alter blank which can lead to blank

A

circulation, necrosis

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19
Q

passive stabilizer that has 3 layers (ant,mid,post) and attaches to sp and tp and other tissues

A

thoracolumbar fascia

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20
Q

anterior and middle thoracolumbar fascia layers are derivatives of the blank and attach to blank

A

quadratus lumborum, tp’s

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21
Q

posterior layer of thoracolumbar fascia fuses with the transverse abdominis, gluteus maximus, and lat dorsi, then attaches to the blank

A

sp’s

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22
Q

vertical fibers of thor fascia attaches to blank and blank

A

glute max, sp

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23
Q

thor fascia horizontal fibers attach to blank, and blank

A

sp, transverse abdominis, abdominal obliques

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24
Q

erector spinae are blank muscles

A

divergent, central to lateral (v shaped)

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25
Q

erector spinae are blank muscles which are movers

A

spurt

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26
Q

spurt muscles have insertions blank axis of rotation

A

close to

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27
Q

multifidus and rotatores are blank muscles because inserition is lateral to central

A

convergent

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28
Q

multifidus and rotatores are blank because they are short going from tp to sp and do stabilization mainly

A

shunt

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29
Q

action to create trunk flexion or posterior pelvic rotation

A

rectus abdominis

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30
Q

standing trunk flexion has blank involvement of rectus abs

A

no

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31
Q

internal obliques create blank trunk rotation

A

ipsilateral

32
Q

external obliques create blank trunk rotation

A

contralateral

33
Q

contraction of trunk flexors and extensors is blank

A

co contraction

34
Q

scm creates blank rotation

A

contralateral

35
Q

co contraction of extensors and flexors increases these pressures

A

intrathecal, intraabdominal, intradiskal

36
Q

thecal sac has to do with the blank

A

meninges

37
Q

point at which normal lumbar lordosis is maintained and painfree

A

neutral spine

38
Q

neutral spine requires blank

A

co contraction

39
Q

when erector spinae is contracted, it shortens which increases blank stability

A

thoracolumbar fascia

40
Q

increased pressure on ivd causes pushing out of the blank which causes increased tension of the blank

A

nucleus pulposus, annulus fibrosus

41
Q

increased height of disc during compression (hoop stress) causes blank compression of z joints

A

decreased

42
Q

annulus fibrosus is arranged in blank layers that have a fiber orientation blank to each other

A

concentric, opposite

43
Q

lumbar vertebrae have a larger blank diameter than blank

A

transverse, a-p

44
Q

primary motion of lumbar spine

A

flex/extend

45
Q

lumbar blank is more limited than blank

A

flexion, extension

46
Q

flexion appears to move farther because of blank involvement

A

pelvis

47
Q

80-90 percent of flexion comes from this segment

A

l4-l5

48
Q

sb is about blank degrees each way

A

20

49
Q

rotation and sidebending to opposite sides for neutral mechanics

A

fryettes law 1

50
Q

rotation and sidebending to same side in non neutral

A

fryettes law 2

51
Q

larger disc allows more blank

A

movement

52
Q

pain on the left side during right rotation may mean blank on the blank side

A

djd, left

53
Q

angle between base of sacrum and the horizontal plane

A

angle of the sacrum

54
Q

normal angle of sacrum

A

30

55
Q

increased angle increases lumbar blank and anterior blank

A

lordosis, shear/rotation

56
Q

this angle is measured by the obtuse angle of the bodies of l5, s1

A

lumbosacral angle

57
Q

normal lumbosacral angle

A

140

58
Q

anterior pelvic tilt in ckc will blank lumbosacral angle but blank sacral angle

A

decrease, increase

59
Q

okc flexion, sacral angle blank, but lumbosacral angle blank

A

increases, increases

60
Q

sway back increases blank between l5 s1 which can cause blank

A

shear forces, pain

61
Q

this inhibits l4 and l5 on s1 anterior shear forces 1 degree due to transverse oriented fibers

A

iliolumbar ligaments

62
Q

disk is blank wedge shaped

A

anterior

63
Q

flexion check reins

A

erector spinae, interspinous lig, supraspinous lig, lig flavum all resist tension.

anterior bodies, annulus resist compression

64
Q

check reins for extension

A

z joint compression, ALL tension, rectus abdominis tension

65
Q

rotation check reins

A

bilateral intertransverse tension, entire annulus tension, contralateral z joint compression

66
Q

sb check reins

A

contralateral intertransverse tension, contralateral erector spinae tension

67
Q

disk is loaded most when in this position

A

sitting slouched

68
Q

sitting with good posture puts blank load on disc compared to standing erect

A

more

69
Q

lumbar spine allows the first blank degrees of forward flexion

A

60

70
Q

flexion of the sacrum

A

nutation

71
Q

extension of the sacrum

A

counternutation

72
Q

nutation blank sacral angle

A

increases

73
Q

during counternutation, sacral angle blank

A

decreases

74
Q

anterior pelvic rotation is limited by blank

A

hamstrings

75
Q

sacral nutation eventually stops and sacral counternutation occurs due to further blank because of tight blank

A

anterior pelvic rotation, hamstrings

76
Q

bottom up motion open chain

A

non lumbopelvic rhythm

77
Q

non lumbo pelvic rhythm pulls the blank in this situation

A

sacrum into nutation