Spinal Cord Compression Flashcards Preview

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Flashcards in Spinal Cord Compression Deck (24):
1

How many neuron tracts are present in the Corticospinal tract?

2 - upper and lower neuron tract

2

Is the tract ipsilateral or contralateral?

Ipsilateral

3

Describe the upper motor neuron path?

From the motor cortex to anterior grey horn.
Decussates at medullary level

4

What are signs of an Upper Motor Neuron Lesion?

Increased tone
Muscle wasting NOT marked
No Fasciculation
Hyper-flexia

5

What are signs of a Lower Motor Neurone Lesion?

Decreased tone
Muscle wasting
Fasciculations
Diminished reflexes

6

Describe the Spinothalamic tracts

Sense pain, temperature and crude touch
Contralateral
Decussates at spinal level

7

Describe the dorsal columns

Sense fine touch, proprioception and vibration
Ipsilateral
Decussates at medullary level

8

What can cause acute spinal cord cmpression?

Trauma
Tumours - haemorrhage or collapse
Infection
Spontaneous haemorrhage

9

What degenerative disease can cause chronic spinal cord compression?

Spondylosis

10

What else can cause chronic spinal cord compression?

Tumours
Rheumatoid Arthritis

11

Describe a Cord Transection

Complete lesion - all motor and sensory modalities affected.

12

How does a cord transection present?

Initially a flaccid arreflexic paralysis "spinal shock"
Upper motor neuron signs appear later

13

What is Brown-Sequard Syndrome?

Cord Hemisection

14

What happens in a cord hemisection?

Ipsilateral motor level
Ipsilateral dorsal column sensory level
Contralateral spinothalamic sensory level

15

What can cause Central Cord Syndrome?

Hyperflexion or extension injury to already stenotic neck

16

What does central cord syndrome predominantly affect?

Distal upper limb weakness

17

What is preserved in a central cord syndrome?

Lower limb power
Dorsal columns

18

How is the spnothalamic sensory loss described in central cord syndrome?

Cape-like

19

Whats the difference between acute and chronic spinal cord compression?

Upper motor neuron signs predominate in chronic

20

Describe extradural tumours

Usually metastasis
lung, breast, kidney, prostate

21

Describe intradural tumours

Extramedullary -meniingioma, schwannoma
Intramedullary - Astrocytoma
Ependymoma

22

How do tumours cause acute compression?

Collapse or haemorrhage

23

What happens in Spinal canal stenosis?

Osteophyte formation
Bulging of intervertebral discs
Facet joint hypertrophy
Subluxation

24

What can be causes of an epidural abscess?

Bloodbourne
Staph
TB