Hand

Question 1

Finger Flexion

Answer 1

Curling fingers down toward palm

Question 2

Finger Extension

Answer 2

Straightening fingers

Question 3

Abduction and Adduction of fingers

Answer 3

Defined in reference to middle digit (3)
Abduction = spreading fingers away
Adduction = spreading fingers towards

Question 4

Thumb Flexion

Answer 4

Curling thumb towards palm

Question 5

Thumb Extension

Answer 5

Straightening thumb

Question 6

Thumb abduction

Answer 6

Moving thumb anteriorly away from fingers

Question 7

Thumb adduction

Answer 7

Moving thumb back towards the fingers (posteriorly)

Question 8

Thumb Oppostiion

Answer 8

Moving tip of thumb to touch finger tips
Complex movement
Involves flexion, abduction and adduction and rotation of MC1

Question 9

Anterior Compartments of the Hand

Answer 9

Thenar

Hypothenar

Question 10

Thenar compartment
Functio
Innervation

Answer 10

Function = flexion, abduction, opposition
Innervation = Recurrent branch of the median nerve

Question 11

Hypothenar compartment
Function
Innervation

Answer 11

Function = flexion, opposition, and abduction of 5th digit
Innervation = deep branch of ulnar nerve

Question 12

Posterior compartment of the hand

Answer 12

All extensor muscles of the hand are extrinsic!

Question 13

All intrinsic muscles of the hand arw

Answer 13

anterior

Question 14

Thenar muscles

Answer 14

Mobilize the thumb
Innervated by recurrent of median
Abductor Pollicis Brevis
Flexor Pollicis Brevis (deep head by deep branch of ulnar) 
Opponens Pollicis

Question 15

Hypothenar Muscles

Answer 15

Innervated by deep branch of ulnar
Abductor Digiti Minimi
Flexor Digiti Minimi Brevis
Opponens Digiti Minimi

Question 16

Lumbricals

Answer 16

Flex MCP joint
Extend IP joint
Lateral 2 innervated by median
Medial 2 innervated b deep branch of ulnar

Question 17

All other hand muscles..

Answer 17

Innervated by deep branch of ulnar
Dorsal interossei = DAB
Palmar interossei = PAD
Adductor Pollicis = NOT A THENAR MUSCLE

Question 18

Ulnar Nerve Compression in the Ulnar Canal

Answer 18

Numbness, parasthesia of medial 1 1/2 digits and/or weakness of the intrinsic hand muscles

Question 19

Ulnar Nerve Laceration in the ulnar canal

Answer 19

Loss of cutaneous innervation to the medial 1 1/2 digits, loss of innervation of intrinsic hand muscles
Loss of lumbricals = clawing of 4 and 5, wasting of 1st DAB
Long flexors remain intact

Question 20

Median Nerve compression in carpal tunnel

Answer 20

Numbness.parasthesia of lateral 3 1/2 digits and/or weakness of muscles in thenar eminence

Question 21

Median Nerve Laceration in carpal tunnel

Answer 21

Loss of cutaneous innervation to hand
Loss of lumbricals = clawing of 2 and 3, Wasting of thenar eminence
Long flexors remin intact

Question 22

Recurrent branch of median nerve

Answer 22

Loss of thenar muscles only = ape hand

THumb is adducted and laterally rotated

Question 23

Carpal Tunnel

Answer 23

btw carpals posteriorly
flexor retinaculum anteriorly
Contains median nerve and tendons of FDS (4) and FDP (4) and flexor pollicis longus (1)

Question 24

Anatomical Snuffbox

Answer 24

Triangular fossa on lateral dorsum of hand
Lateral (ant) = tendons of abductor pollicis longus and ext pollicis brevis
Medial (post) = tendon of extensor pollicis long
Contains the radial artery