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Anatomy Assertion Reason question 1

Higher the lesion of the ulnar nerve injury, the less prominent is the deformity- This is called as Ulnar paradox

Assertion: Ulnar nerve injury at the wrist causes less clawing than at elbow

Reason: At the elbow, Ulnar nerve injury will paralyze flexor digitorum profundus also. 

  1. A is true, R is false

2. A is false, R is true

3. A and R are true, R is the correct explanation of A

4. A and R are true, R is not the correct explanation

Answer:

2. A is false, R is true

The Ulnar paradox states – Higher the lesion of the ulnar nerve injury , the less prominent is the deformity

Therefore Ulnar nerve injury at wrist causes more clawing than at elbow because at elbow, Ulnar nerve injury will paralyze flexor digitorum profundus also and it will cause less interphalangeal flexion deformity.

04/12/2022
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