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Peripheral Nerve Lesion
lost: all sensory modalities distal to lesion, includes motor defecits
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Spinal Nerve Lesion
lost: asll sensory modalities throughout dermatome, motor defecits also
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Posterior Root Lesion
- lost: all sensory modalities in dermatome
- no motor defecits
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Brown-Sequard Hemisection
- loss of: descriminitave touch sensation & proprioception
- -T4 and below, right side (I/L)
- loss of: pain & temperature sensation
- -begining 1-2 segments below lesion, left side (C/L)
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Syringomyelia
loss of: pain and temperature sensations in affected dermatomes
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Posterior Cord Syndrome
- loss of: I/L descriminative touch sensation & proprioception at and below level of lesion
- posterior spinal artery
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Anterior Cord Syndrome
- loss of: C/L pain and temperature sensation beginning 1-2 segments below level of lesion (loss of sensation may not be complete-dual blood supply to ALS)
- anterior spinal artery
- arterial vasocorona
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Medial Medullary Syndrome
- loss of: descriminitive touch and proprioception from left side of body
- penetrating branches of anterior spinal artery
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Lateral Medullary Syndrome
- loss of: pain and temperature sensation from left side of body and right side of face
- PICA
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Vascular Syndrome of the Pons
- loss of: descriminative touch & proprioception from left side of body below the neck
- loss of: pain and temperature sensation from left side of face
- paramedian branch of basilar artery
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Vascular Syndrome of the Pons
- loss of: pain and temperature sensations from left side of body below the neck
- loss of: pain and temperature sensations from right side of face
- short & long circumferential branches of basilar artery
-
Vascular Syndromes of the Midbrain
- loss of: somatosensation from left side of body and face
- quadregeminal artery (QA)
-
Hemispheric Lesions
- loss of: all somatosensation
- depends on which vessel is affected
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