Compression of a nerve within the carpal tunnel products inability to -

[Medicoman]

1.Compression of a nerve within the carpal tunnel products inability to -

• 1. Abduct the thumb
• 2. Adduct the thumb
• 3. Flex the distal phalanx of the thumb
• 4. Oppose the thumb

In median nerve injury, palmar abduction of thumb is lost, but not the radial abduction. Radial abduction is done by abductor pollicis longus and extensor pollicis brevis. So the best answer here would be ‘Oppose the thumb’.

Pointing index sign is seen in ---- nerve palsy -

• 1. Ulnar
• 2. Radial
• 3. Median
• 4. Axillary

Oschner’s clasp test or Pointing index is seen in high median nerve injury.