Compression of a nerve within the carpal tunnel produces inability to -: (A) Abduct the thumb, (B) Adduct the thumb, (C) Flex the distal phalanx of the thumb, (D) Oppose the thumb
Answer is D. 9 tendon & 1 nerve pass through carpal tunnel . They are tendons of flexor digitorum superficialis & profundus in a common sheath , tendon of flexor pollicis longus in an independent sheath & the median nerve Median nerve - motor branches in hand are * flexor pollicis brevis : flexes metacarpophalangeal joint of thumb * opponens pollicis : opposes thumb towards the fingers *abductor pollicis brevis : abduction of thumb *first & second lumbricals : fex metacarpophalangeal joints , extend interphalangeal joints Sensory- palmar skin over the lateral three & half digits with their nail beds REF:textbook of ohopedics, John Ebenezer, 4th edition ,pg.no.391