Spinal cord and root dysfunction Flashcards
Possible presentations
Pain Sensory disturbance Weakness Sphincter dysfunction Sexual dysfunction
Management of spinal problems - surgery is first line in most cases. True or false?
False
- try 6 weeks of physiotherapy and if symptoms are persistent, patient should be sent for MRI scan
Central problem (something pressing on the spinal cord itself) then what are the likely symptoms?
UMN problem
- increased tone
- no weakness
- brisk reflexes
- upgoing plantars
- no fasciculations
Lateral problem (something pressing on the nerve roots/plexus/peripheral nerve) then what are the likely symptoms?
LMN problem
- weakness
- atrophy
- decreased tone
- absent reflexes
- fasciculations
Arm involvement if the problem is in which of the following regions:
- cervical
- thoracic
- lumbar
Cervical
Leg involvement if the problem is in which of the following regions:
- cervical
- thoracic
- lumbar
Lumbar
Which nerve root is affected: disorder of elbow flexion?
C5
Which nerve root is affected: disorder of wrist extension?
C6
Which nerve root is affected: disorder of finger flexion?
C8
Which nerve root is affected: disorder of knee extension?
L3
Which nerve root is affected: disorder of elbow extension?
C7
Which nerve root is affected: disorder of finger abduction?
T1
Which nerve root is affected: disorder of hip flexion?
L2
Which nerve root is affected: disorder of ankle plantar flexors ?
S1
Which nerve root is affected: Disorder of ankle dorsiflexion?
L4
Which nerve root is affected: disorder of long toe extension?
L5
Red flags in a back pain history
Pain for longer than 6 weeks Bilateral leg pain Pain troublesome at night New neurological deficit Systemic upset Saddle anaesthesia Bladder/bowel changes Weight loss Hx cancer Age under 20 Age over 60
Bilateral leg pain, loss of bowel control, saddle anaesthesia, painless urinary retention with overflow incontinence. What is the likely diagnosis?
Cauda equinae syndrome
Cauda equinae syndrome - definition
Something causes compression on all of the nerve roots of the cauda equine region.
This is a surgical emergency
Cauda equinae syndrome - causes of compression
Prolapsed lumbar disc - central prolapse
Tumour compression
Trauma
Infection
Cauda eqinae syndrome - clinical examination
PR exam
Cauda equinae syndrome - what urgent imaging investigation must be carried out
MRI lumbosacral spine
- necessary to determine the level of prolapse
Cauda equina syndrome - management
Urgent surgery to remove the material that is compressing the nerves - discectomy
Patient who has been lifting heavy suitcases presents with back pain. What is the likely diagnosis?
Intervertebral disc prolapse
- slipped disc
Intervertebral disc prolapse - definition
Tear in the outer annulus fibrosis of an invertebrate disc
Intervertebral disc prolapse - how can you determine the exact location of the prolapse?
Analyse the myotomes and dermatomes
Intervertebral disc prolapse - initial management
Conservative management
- bed rest
- anti-inflammatory
- muscle relaxant
- make sure patient remains mobile
Intervertebral disc prolapse - when would you consider surgery
Patient isn’t getting better after 3 months of conservative treatment
What are the 2 most common locations for lumbar disc prolapse?
L4/L5 level
L5/S1 level
Spinal claudication - who gets it
Over 50
male
Name 2 causes of spinal claudication?
Manual worker
Obesity
Spinal claudication - distribution of pain
Dematomal distribution down bilateral legs
Spinal claudication - pain is worse at rest/ with movement?
With movement
Patient who experiences leg pain which is relieved when walking up a hip as they are more hunched over (spine flexion). What is the likely diagnosis?
Spinal claudication
Spinal claudication - investigations?
MRI scan
- lumbar spinal stenosis (squished spinal canal)
- buldges present at several levels
Spinal claudication - management if patients symptoms are intolerable
Elective surgery (lumbar spinal compression)
How to tell the difference between spinal claudication and vascular claudication?
Check peripheral pulses:
- if pulses are normal = spinal claudication
- if pulses are diminished/absent = vascular claudication
Cervical myelopathy - definition
Central disc prolapse in the cervical spine. Therefore, UMN signs are present
Cervical myelopathy - clinical features
Hands are usually affected first usually bilateral paraesthesia numbness difficulty with fine motor tasks dropping objects
Cervical myelopathy - investigations
MRI cervical spine
Cervical myelopathy - management
Decompressive cervical surgery to prevent the condition from deteriorating further
Cervical spondylosis - definition
Degenerative arthritic process involving cervical spine and affecting intervertebral disc
Cervical spondylosis - imaging investigations show
Osteophytes
Causes of acute spinal cord compression
Trauma
Tumours
Infection
Acute spinal cord compression - trauma - investigations
X ray
CT scan
MRI scan
Acute spinal cord compression - trauma - management
Immobilise (neck brace)
Decompress
Stabilise (external fixation)
Acute spinal cord compression - tumours - most common
Bony mets
Acute spinal cord compression - tumours - management
IV dexamethasone
Radiotherapy
Chemotherapy
Patient that has lost motor power on left side of body but on right side of body pain and temperature sensation is lost. What is this called?
Brown Sequard syndrome
Brown Sequard syndrome - definition
Cord hemisection Affects - ipsilateral corticospinal tract - ipsilateral DCML tract - contralateral spinothalamic tract
Central cord syndrome - who gets it?
Old patients who fall over
Central cord syndrome - pathophysiology
Inner part of the spinal cord is injured but the outer part is fine
Central cord syndrome - clinical features
Signs that patient has fallen
Distal upper limb weakness
Hands are paralysed/weak
Lower limb power is preserved
Central cord syndrome - management
Leave it alone and it gets better
Chronic spinal cord compression - LMN signs predominate. True or false?
False
- UMN signs predominate
Patient presents with bilateral weakness of the limbs. The upper limbs are more affected than the lower limbs. What is the likely diagnosis?
- anterior cord syndrome
- central cord syndrome
- posterior cord syndrome
Central cord syndrome
In central cord syndrome, why are the upper limbs more affected than the lower limbs?
In the corticospinal tracts, the upper limbs are represented medially and the lower extremities are laterally
Patient presents with bilateral weakness and loss of pain and temperature sensation. Proprioception, vibratory sense and light touch are preserved. What is the likely diagnosis?
- anterior cord syndrome
- central cord syndrome
- posterior cord syndrome
Anterior cord syndrome