strokes etc

Question 1

full body hemiparesis

Answer 1

contralateral cerebral motor cortex (widespread stroke)

contralateral corona radiata, internal capsule or pons (eg stroke)

Question 2

limb hemiparesis

Answer 2

contralateral cerebral motor cortex (eg streoke)
contralateral corona radiata, internal capsule or pons (eg stroke)
ipsilateral spinal lateral motor tract (eg cervical disc prolapse)

Question 3

isolated arm OR leg weakness

Answer 3

localised cerebral stroke contralaterally
contralateral corona radiata, internal capsule or pons (eg stroke)
ipsilateral nerve root (eg osteophyte)
ipsilateral nerve plexus ( eg trauma to brachial plexus)
ispilateral peripheral nerve per se (eg angiogram sheath injury to femoral nerve)

Question 4

parapareis

Answer 4

bilateral cerebral motor cortex (eg aprasagittal meningioma)
bilateral motor spilan tracts (cod compression)
cauda equina (ex lumbar intervertebral disc prolapse)
bilateral lumbosacral plexus (eg GBS)

Question 5

tetraplegia

Answer 5

bilateral motor tracts of cervical spinal sord (trauma at C5)
peripheral nerves (demyelinating disease eg GBS)

Question 6

proximal muscle weakness

Answer 6

neuromuscular junction (eg MG, Eaton-Lamber syndrome)
Muscle (polymuositis, dermatomyositis) or due to other cuases eg drugs

Question 7

several episodes separated in time and space

Answer 7

classicaly MS