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Medicine

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Neurology

Question
10 out of 12
 

Which of the following is not a feature of conus medullaris syndrome? (LQ)



A Bladder / bowel Early & marked

B Ankle reflex Absent

C Knee reflex Absent

D Root involved S3, S4, S5

Ans. C

Knee reflex Absent

Differences between conus medullaris and Cauda Equina

Conus medullaris

Cauda equina

1). Root involved

S3, S4, S5

L2 – L4

2). Root pains

uncommon

Common

3). Involvement

B/L

U/L

4). Symmetry

Symm

Assym

5). Site

Perineum

Thigh / leg

6). Motor Signs

Usually no weakness

Weakness below knee, Asymmetric weakness

7). Knee reflex

Present

Absent

8. Ankle reflex

Absent

Present

9). Sensory –

Dissociated anesthesia

No dissociation

10). Bladder / bowel

Early & marked

Late, less marked

Note: Conus medullaris syndrome is a very important DD of BHP. But in BHP there is no loss of peri anal sensation and ankle jerk is normal.

Neurology Flashcard List

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