QuestionSBA
QuestionChoice
This would present similarly to the case above but the signs would be found on the other side of the body. This would be a hemisection on the other side of the cord
10005779
d
Left
QuestionChoice
This would cause symmetrical symptoms as the lesion would be found on both sides of the cord.

Dorsal columns would largely be affected so the loss of proprioception and fine touch would be found on both sides.

The spinothalamic tracts would be spared so pain and temperature would not be affected.
10005778
c
Posterior
QuestionChoice
All tracts would be damaged and the signs would be found bilaterally.
10005780
e
Complete transaction
QuestionChoice
This question is testing your understanding of the anatomy of the spinal cord. including where the tracts decussate and where they are found in the spinal cord.

The corticospinal tract carries motor information from the frontal lobe to the LMN. The fibres decussate at the medulla and remain contralaterally down the spinal cord. Therefore, a lesion anywhere along the spinal cord will cause paralysis on the same side.

The spinothalamic tracts are found in the anterior cord and carry pain and temperature up to the cortex. The fibres decussate at the level of the spinal cord. Therefore, a lesion anywhere along the spinal cord will cause loss of pain and temperature on the opposite side.

The dorsal columns are found in the posterior cord where they carry proprioception and touch up to the cortex. The fibres decussate at the medulla and remain on the same side up the spinal cord. Therefore, a lesion anywhere along the spinal cord will cause proprioception loss on the same side.
10005776
a
Right
QuestionChoice
This would cause symmetrical symptoms as the lesion would be found on both sides of the cord.

The spinothalamic tracts would be largely affected. Loss of pain and temperature would be found on both sides.

Dorsal columns would be spared so proprioception and fine touch would still be intact.
10005777
b
Anterior
Concept
Chapter
2693
4105
Brown-Séquard Syndrome
Topic
141
Neurology
13702
60 year old presents to the emergency department with complete paralysis on the right side.

There is a loss of proprioception and vibration on the right side and a loss of temperature and pain sensation on the left

Where is the lesion in the spinal cord?
a