S&d Test 1: Hand

Front 1

Total number of carpal bones

Back 1

8

Front 2

Total number of metacarpal bones

Back 2

5

Front 3

Total number of phalangeal bones

Back 3

14 (thumb only has 2)

Front 4

Bones in proximal row of wrist

Back 4

Scaphoid, Lunate, Triquetrum, Pisiform (sesamoid)

Front 5

Bones in distal row of wrist

Back 5

Trapezium, Trapezoid, Capitate, Hamate

Front 6

Most fractured bone in wrist (by FOOSH)

Back 6

scaphoid

Front 7

Name the joint between carpal bones and hand bones

Back 7

Carpometacarpal joint

Front 8

Name the joint between the hand bones and fingers.

Back 8

Metacarpophalangeal joint.

Front 9

Name the common synovial joint in the hand that can be affected by arthritis.

Back 9

1st carpometacarpal joint (between trapezium and thumb)

Front 10

Boxer's fracture often presents as a fracture of which bone(s).

Back 10

Fracture of 5th metacarpal (5th knuckle)

Front 11

Name for thick fascia that covers the ventral hand and protects the long flexor tendons.

Back 11

Palmar aponeurosis

Front 12

Name the four compartments of the hand.

Back 12

Hypothenar, thenar, central, adductor

Front 13

What is the clinical importance of the hand compartments?

Back 13

Determine the spread of infection within the hand.

Front 14

Of the two spaces within the hand (midpalmar and thenar), which is more likely to spread infections and why?

Back 14

Midpalmar b/c it is continuous with the carpal tunnel.

Front 15

What two types of ligaments make up the fibrous digital sheaths on the phalanges?

Back 15

Annular and cruciform ligaments

Front 16

What clinical presentation is characterized by nodule formation on a tendon, leading to a locked finger position in flexion?

Back 16

trigger finger (can do surgery to remove nodule)

Front 17

Name for tubular envelopes that surround tendons in the hand and wrist.

Back 17

synovial tendon sheaths

Front 18

What are the three intrinsic hand muscles found in the hypothenar compartment?

Back 18

abductor digiti minimi, flexor digiti minimi, opponens digiti minimi

Front 19

What is the innervation of the hypothenar muscles?

Back 19

deep branch of the ulnar nerve (C8,T1)

Front 20

What are the three intrinsic hand muscles found in the thenar compartment?

Back 20

Abductor pollicis brevis, flexor pollicis brevis, opponens pollicis

Front 21

What is the innervation of the thenar muscles?

Back 21

Recurrent branch of median nerve (C8, T1)

Front 22

What is the intrinsic hand muscle found in the adductor compartment?

Back 22

adductor pollicis

Front 23

What is the innervation of the adductor pollicis muscle?

Back 23

Deep branch of the ulnar nerve (C8, T1)

Front 24

Which muscle tendons do the lumbrical muscles arise from?

Back 24

flexor digitorum profundus

Front 25

What is the motion of the lumbricals?

Back 25

Knuckle-flexing hand wave ("bye-bye")

Front 26

What is the innervation of the lumbrical muscles?

Back 26

For lateral two, innervated by median nerve (C8, T1). For medial two, innervated by ulnar nerve (C8, T1)

Front 27

What is the motion of the palmar interossei muscles?

Back 27

Adduction towards 3rd phalange. (palmar for piece of paper)

Front 28

What is the innervation of the interossei muscles?

Back 28

Deep branch of ulnar nerve (C8, T1)

Front 29

What is the motion of the dorsal interossei muscles?

Back 29

Abduct digits away from axial line

Front 30

Name the three extrinsic hand muscles that pass under the flexor retinaculum.

Back 30

Flexor pollicis longus, flexor digitorum superficialis, flexor digitorum profunda

Front 31

Name everything that passes through the carpal tunnel.

Back 31

4 flexor digitorum profundus, 4 flexor digitorum superficialis, flexor pollicis longus, median nerve

Front 32

What does the median nerve innervate in the hand?

Back 32

Thenar muscles (through recurrent branch), 3.5 digits (through common and proper digital branches), central palm sensation (through palmar carpal branch before flexor retinaculum)

Front 33

Other than difficulty flexing the lateral 3.5 fingers, what motor loss are patients most likely to experience with carpal tunnel syndrome?

Back 33

Inability to oppose their thumb.

Front 34

What does the deep branch of the ulnar nerve innervate?

Back 34

Almost all intrinsic hand muscles.

Front 35

What does the superficial branch of the ulnar nerve innervate?

Back 35

Common and proper digital branches to 1.5 digits.

Front 36

Which arch does the ulnar artery form? Where does it contribute blood flow?

Back 36

Superficial palmar arch for common and proper digital arteries + medial aspect of hand

Front 37

Which arch does the radial artery form? Where does it contribute blood flow?

Back 37

Deep palmar arch, gives rise to radial indicis and Princeps pollicis arteries (index and thumb)

Front 38

What is the most commonly dislocated carpal bone? What is the clinical presentation?

Back 38

Lunate, compresses median nerve