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Spinal Lecture 4 Flashcards

1
Q

where does the anterior longitudinal ligament extend from?

A

anterior surface of vertebral bodies

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2
Q

can you stress the anterior longitudinal ligament?

A

No, taugt extension, can’t in reality stress it

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3
Q

what aspects of the anterior longitudinal ligament are broader, thinner?

A

broader caudally and thinner cranially

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4
Q

at about the level of C2 what is the anterior longitudinal ligament replaced by?

A

it is replaced by the anterior atlantooccipital membrane (different type of tissue)

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5
Q

the anterior longitudinal ligament is thicker and narrower in the _spine than in the _ and _ spine

A

thicker and narrower in the T-spine than in the c and l-spine

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6
Q

the anterior longitudinal ligament extends to the front of the ___

A

sacrum

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7
Q

the longitudinal fibres of the anterior longitudinal ligament attach to what?

A

IVD

hyaline cartilage

anterior aspect of vertebral bodies

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8
Q

the anterior longitudinal ligament fibres blend with what?

A

subadjacent periosteum, perichondrium and periphery of the annulus fibrosis

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9
Q

describe the anterior longitudinal ligament superficial layer

A

longest, extend over 3 of 4 vertebrae (thinnest, weakest)

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10
Q

How many vertebrae does the anterior longitudinal ligament intermediate layer run between?

A

between two or three vertebrae

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11
Q

describe the anterior longitudinal ligament deep layer

A

one body to next (strongest)

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12
Q

where does the posterior longitudinal ligament lay?

A

lies in the vertebral canal on the posterior surface of the vertebral bodies

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13
Q

what is the posterior longitudinal ligament continuous with at about C1-C2?

A

membrane tectoria

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14
Q

what does the posterior longitudinal ligament attach to?

A

IVD, hyaline cartilage and vertebral bodies

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15
Q

in the lumbar spine and lower thoracis spine the posterior longitudinal ligment is ___, narrow over ___ and broad over ___

A

in lumbar spine and lower thoracic spine it is DENTICULATE, narrow over VERTEBRAL BODIES and broad over DISCS

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16
Q

what is the posterior longitudinal ligament fused with and how does this reinforce the disc

A

fused with nulus fibrosis of the IVD therfore reinforces disc posteriorly

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17
Q

when is the posterior longitduinal ligament taut?

A

in flexion

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18
Q

T/F the posterior longitudinal ligament is affected by anything in the vertebral canal i.e. meningitis, disc herniation

A

TRUE

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19
Q

describe the superficial layer of the posterior longitudinal ligament

A

longest, extend over 3 of 4 vertebrae

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20
Q

describe the intermediate layer of the posterior longitudinal ligament

A

between two or three vertebrae

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21
Q

describe the deep layer of the posterior longitudinal ligament

A

extends between adjacent vertebrae

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22
Q

where is the ligamentum flavum found and what does it lie posterior to?

A

inside vertebral canal posterior to spinal cord

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23
Q

what does the ligamentum flavum connect in the vertebral canal?

A

connects lamina to lamina

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24
Q

what tissue properties does the ligamentum flavum have and what does this allow for?

A

yellow elastic tissue like the ligamentum nuchae to allow for mobility and recoil

25
what does the ligamentum flavum restrict and what does it provide rebound tension for?
restricts flexion and lends rebound tension to go back into extension
26
do the fibres of the ligamentum flavum run parallel or perpendicular?
almost perpendicular fibres
27
what two points does the ligamentum flavum run between?
descend from inferior surface of one lamina to the superior surface of next lower lamina
28
where is the ligamentum flavum thin, thick and thickest?
thin -broad and long in the neck thicker - in the thoracic spine thickest -in the lumbar spine
29
what is the most superficial ligament in the spine?
surpraspinous ligament
30
what points does the supraspinous ligament run between
from spinous process to spinous process - C7 to sacrum (becomes ligamentum nuchae above C7)
31
what level may the supraspinous ligament cease at?
L5
32
what portion of the spine has a thicker and broader supraspinous ligament
L-spine
33
what does the supraspinous ligament intimately blend with
neighbouring fascia
34
what does the supraspinous ligament provide attachment for
muscle, fascia and aponeurotic attachment
35
how many segments does the superficial fibres of the supraspinous ligament extend over
3 to 4 segments
36
how many segments does the intermediate fibres of the supraspinous ligament span between?
two to threee segments
37
how many segments does the deep fibres of the supraspinous ligament span between
one segment
38
what movement stresses the surpraspinous ligament
flexion
39
what ligament fills the gap between SPs
interspinous ligament
40
is the interspinous ligament thick or thin?
thin, almost membranous
41
the __ ligament connects adjoining spine from root to apex of each
interspinous ligament
42
what does the interspinous ligament meet with anteriorly and posteriorly
meet ligamentum flavum anteriorly and supraspinous ligament posteriorly
43
where is the interspinous ligament narrow and where is it broad
-narrow and elongated in the thoracic spine -broader and thicker in the lumbar spine
44
where is the interspinous ligament poorly developed and what is it replaced by in this area
poorly developed in the cervical spine where its replaced by and interspinous muscle
45
When is the interspinous ligament taut?
in flexion
46
what points does the intertransverse ligament travel between
between transverse processes, superior part of one below to inferior part of one above
47
in which area does the intertransverse ligament have few, irregular fibres and what is it replaced by in this area
in C-spine and it is largely replaced by the intertransverse muscle
48
in which area does the cords of the intertransverse ligament blend with surrounding muscles
t-spine
49
in which area is the intertransverse ligament thin and membranous
l-spine
50
51
Whn running the psoas in contracting causing ____ and \_\_\_\_. If there is disfunction in the area (such as anterior longitudinal ligament not doing it's job) the Psoas then needs to stabilize the spine too. This is not it's intended job and now is sucepitble to \_\_\_.
Side bending and rotation. Injury
52
What is a negative consequence of the ligamentum flavum becoming ossified?
Spinal stenosis. Not much you can do to fix but you can correct everything around it and get the patient mobile and moving as much as possible.
53
Anterior Longitudinal Ligament A1: A2: Fibre Direction: Stress: Function: Relationships:
Anterior Longitudinal Ligament A1: Front of Sacrum - Anterior surface of vertebral bodies, IVD, hyaline cartilage A2: C2 (replaced by atlantooccipital membrane) - Anterior surface of vertebral bodies, IVD, hyaline cartilage Fibres blend with subadjacent periosteum, perichondrium and peripher of the annulus fibrosis 3 layers: Superficial (3 to 4 vertebrae - weakest), intermediate (2 or 3 vertebrae), deep (one body to next - strongest) Fibre Direction: Vertical (superior / inferior) Stress: Taught in extension but can't in reality stress it Function: Resists extension, prevents anterior translation, force attenuation by transmitting force through the entire spine. Relationships: Continuous with anteromedial aspect of SIJ at the sacrum Lateral borders of the ALL merge with attachment sites for Psoas - implication is a tight psoas can put stress on the anterior longitudinal ligament and thus the vertebrae. Vice versa if there is no movement or disfunction is present in the lumbar spine it can impact the psoas Crura shares attachemnt - R. side L1-L3 L. side L1-L2. Every time you breath the crura is pulling on L1-L3
54
Posterior Longitudinal Ligament A1: A2: Fibre Direction: Stress: Function: Relationships:
Posterior Longitudinal Ligament A1: C1/C2 (replaced by membrane tectorium) - posterior surface of vertebral bodies, IVD, hyaline cartilage A2: Sacrum - posterior surface of vertebral bodies, IVD, hyaline cartilage 3 layers: superficial (3 to 4 vertebrae), intermediate (2 to 3 vertebrae), deep (extends to adjacent vertebrae) Fibre Direction: vertical (superior / inferior) Stress: Taut in flexion Function: resist posterior translation, flexion Relationships: Affected by anything in the vertebral canal such as meningitis or disc herniation Strongest attachments to outer layer of annulus fibrosis weakest attachments to vertebral bodies Attachment for the dura
55
Ligamentum Flavum: A1: A2: Fibre Direction: Stress: Function: Relationships:
Ligamentum Flavum A1: Inferior aspect of one lamina (inside vertebral canal posterior to spinal cord) A2: Superior aspect of another (inside vertebral canal posterior to spinal cord) Fibre Direction: Vertical (perpendicular fibres) Stress: Side bend? Flexion? Function: restrics flexion and lends rebound tension to go back into extension Force attenuation - transmitted between supraspinous, interspinous as well as up and down the spine Helps to protect the contents of the vertebral foramen by helping to form the roof over top Relationships: Lateral fibres attach to facet joint capsule Medial fibres fuse with interspinous ligament Made up of 80% elastin (yellow - unique to this ligament) If buckes as it comes into neutral or extension it could push into the vertebral foramen and you could be in trouble - it merges with the interspinous ligament which pulls it back out disallowing it to buckle
56
Supraspinous Ligament A1: A2: Fibre Direction: Stress: Function: Relationships:
Supraspinous Ligament A1: C7 (replaced by ligamentum nuchae) - Spinous process A2: Sacrum (may cease at L5) - Spinous process Superficial fibres (3 to 4 segments), intemediate (2 to 3), deep (segment to segment) Fibre Direction: Vertical (superior / inferior) Stress: Flexion Function: Relationships: Most superficial ligament in the spine Thicker in L-spine Binds to the interspinous ligament Blends with neighbouring fascia - thus act as force transducer - transmitting force develpoed in the extremities and torso into the lumbar vertebral column Area for muscle, fascia and aponerutoic attachment
57
Interspinous Ligament A1: A2: Fibre Direction: Stress: Function: Relationships:
Interspinous Ligament A1: Root of one spine A2: Apex of another spine Fibre Direction: Vertical - fan shaped allowing the ligament to expand without rupture Stress: Flexion Function: Resist flexion, force dispersal Relationships: Meet ligamentum flavum anteriorly Meet supraspinous ligament posteriorly - Thus dispersed force between the two The fibres run mostly anterior posterior to act as an anchor, transmitting the AP pull of the TLF, into which is attached the supraspinous ligament and ligamentum flavum, not allowing the later to buckle
58
Intertransverse Ligament A1: A2: Fibre Direction: Stress: Function: Relationships:
Intertransverse Ligament A1: Superior part of one TP A2: Inferior part of another TP Fibre Direction: Vertical Stress: ? Function: Prevents side bending a rotation (a little) Relationships: Replaced with intertransverse muscle in the c-spine

Spinal Anatomy (15 decks)

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