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Plastic Surgery( Grabb)Ali jasim > Functional Anatomy HAND > Flashcards

Functional Anatomy HAND Flashcards

1
Q

This relative shortening of the
radius can cause the distal ulna to impact the lunate or triquetrum

A

T

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2
Q

The primary stability of the distal radioulnar joint
(DRUJ) is provided by the triangular fibrocartilage complex

A

T

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3
Q

the bony configuration of the sigmoid notch of the
radius provides 30% ofthe DRUJ stability.

A

T

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4
Q

there
are no tendinous insertions in any of the carpal bones

A

T

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5
Q

the scaphoid as the
keystone in carpal raws

A

F the lunate as the
keystone and the scaphoid extending to both rows

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6
Q

The hamate bone represents attachment of what structure?

A

flexor retinaculum,
hypothenar muscles,
Pisohamate fascia of the Guyon canal

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7
Q

The strongest ligaments of the wrist

A

volar radioscaphocapitate ligament

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8
Q

Intrinsic ligaments provide stability between between rows.

A

F Intrinsic ligaments provide stability between carpal bones within the
proximal and distal rows but not between rows

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9
Q

The metacarpal (MC) boneshave a collateral recess radially and ulnarly
at their heads for the origin of the proper collateral ligaments (CL

A

T

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10
Q

These recesses are radiographically visible and serve as excellent insertion points for ideal angulation
in placing longitudinal K-wires

A

T

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11
Q

The dorsal convexity of the MC bone leading to dorsal apex fracture patterns

A

T

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12
Q

The volar plate is contiguous with the deep transverse MC ligament, which connects the
metacarpal heads and helps maintain the MCs in a slight dorsal arch in the transverse plane.

A

T

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13
Q

Flexion increases MPJ stability Why?

A

Because the MC head iswider on its volar surface,
flexion increases joint stability by tightening the CL and elongating the
VP. (CAM effect)

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14
Q

the MPs are not linear.
Instead, there is a 10- to 14-degreenatural ulnar deviation

A

T

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15
Q

CMC) joints have limited mobility
at the index finger

A

T

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16
Q

(CMC) joints progressively more mobile toward the
ulnar aspect of the hand, allowing for approximately 30 degrees flexion/extension at the fourth and fifth with some supination

A

T

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17
Q

The interphalangeal (IP)joints
have one axis of rotation in flexion and extension due to their bony
configuration

A

T

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18
Q

The cause of contracture in PIP joint

A

Small volar checkrein ligaments arising from the
proximal phalanx volar ridges to the VP are thought to contribute
to flexion contractures, which can arise at the PIP joints

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19
Q

The thumb bones are pronated about 90 degrees and volarly
abducted about 45 degrees

A

T

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20
Q

The thumb’s MP joint is a shallow balland-socket, which permits the thumb phalanges to pronate even
more than the metacarpal.

A

T

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21
Q

The basilar Joint of the thump CMC) joint is a saddle or double ginglymus joint allowing for circumductive motion

A
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22
Q

the primary stabilizer of thump CMC) is the adducter apponeurosis

A

F the primary stabilizer is the volar beak/oblique ligament

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23
Q

The work of the arm is done by the
flexors

A

t

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24
Q

The EIP is a useful donor motor
tendon for functional transfers and can be identified by its muscle
belly distal most in the dorsal forearm

A

T

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25
Q

The juncturae tendinae can
confuse diagnosis of tendon disruptions by the ablility to extend fingers with ruptured tendons to neutral posture

A

T

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26
Q

laxity seen in inflammatory joint conditions in the sagittal band contributes to
radial drift

A

F. Ulnar drift

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27
Q

There are no extensor insertions on the proximal phalanx

A

T

28
Q

How did the proximal phalanx extend?

A

the sagittal bands transmit tension to the volar plate to pull the proximal phalanx into extension

29
Q

the intrinsic
muscles pass volar to the MP joint
axis and thus aid in flexion at that joint.

A

T

30
Q

The PIP and DIP joints will not extend ifthe intrinsic
muscles do not contract

A

T

31
Q

he flexor tendon sheath extends from the proximal edge ofthe Al pulley to the
DIP joint,

A

T

32
Q

The first dorsal interosseous muscle is the last innervated muscle by
the ulnar nerve

A

T

33
Q

the deep head ofFPB and the transverse head
of the AdP are innervated by the ulnar nerve

A

T

34
Q

patients with long-standing
carpal tunnel syndrome and thenar wasting are often not aware of
any functional deficit

A

T

35
Q

. Metacarpal fractures will
always have concomitant interosseous muscle damage

A

T

36
Q

In metacarpal fracutre the
the hand may have a significant weakness with grip or finger extension, why?

A

Due to derangement of the muscles.

37
Q

a finger fracture can have significant concomitant tendon
involvement

A

T

38
Q

The
neurovascular structures can tolerate some tension and are able to
glide longitudinally

A

T

39
Q

The radial artery runs in a course toward
the radial wrist radial to the FCR.

A

T

40
Q

The ulnar art is considered the main contributor to the deep arch in the palm

A

F Radial art—Deep arch
Ulnar Art- - superficial arch

41
Q

The ulnar artery runs
between the FDS and FDP muscle groups

A

t

42
Q

Ulnar art palpable radial to
the FCU

A

T

43
Q

The ulnar artery runs
between the FDS and FDP muscle groups and is palpable radial to
the FCU

A

T

44
Q

the princeps pollicis artery to the thumb arises from the radial artery

A

T

45
Q

the shoulder girdle is controlled by C6 nerve roots

A

F C5

46
Q

he intrinsic muscles of the hand are innervated from C8/Tl
roots

A

T

47
Q

C5 provides sensation to the radial border of the forearm,
Tl provides ulnar forearm sensation

A

T

48
Q

the median motor is volar radial, and the ulnar
motor is dorsal radial

A

T

49
Q

The median nerve lies
between the superficialis and profundus muscle bellies in the forearm,
adherent to the deep surface of the superficialis

A

T

50
Q

The biceps
tendon is palpable ulnar to the brachioradialis in the antecubital
fossa.

A

T

51
Q

The median nerve, anterior interosseous nerve, and the brachia! artery are ulnar to the biceps insertion.

A

T

52
Q

Palmaris longus tendon absent in in about 15% of the population and bilaterally in 8%

A

T

53
Q

The median
nerve is radial to the PL tendon

A

T

54
Q

All the flexor digitorum superficialis and profundus tendons are ulnar to the PL tendon

A

T

55
Q

The distal wrist crease lies at the midcarpal joint corresponding to the
capitolunate articulation.

A

T

56
Q

The distal pole of the scaphoid is proximal to
The distal wrist crease

A

F The distal pole of the scaphoid is distal to
the crease

57
Q

The crease also identifies the proximal edge of the transverse carpal ligament and can be used as a landmark for median nerve
blocks

A

T

58
Q

The distal palmar crease overlies the metacarpal head .

A

F the metacarpal necks and is 5 to 8 mm proximal to the metacarpal-phalangeal (MP) joints

59
Q

named MP crease is actually at the same level as the web space and
overlies the midportion of the proximal phalanx

A

t

60
Q

The radial digital nerve to the index finger runs deep to the
thenar crease.

A

T

61
Q

anatomic snuffbox formed by?

A

The radial styloid, the abductor pollicis longus and extensor pollicis
brevis tendons, and the extensor pollicis longus tendon all form the
anatomic snuffbox

62
Q

The dorsal branch of the radial artery and its venae comitantes are located deep in the snuffbox

A

T

63
Q

The bony floor
deep is the distal scaphoid and the trapezium. in sunffbox

A

t

64
Q

The palpable ulnar styloid is the origin of the TFCC as well as the
border of the sixth dorsal compartment

A

T

65
Q

The digital neurovascular bundles and flexor tendon sheath are volar to The junction ofthe glabrous and nonglabrous skin

A

T

66
Q

. The safe duration of tourniquet-induced
ischemia in the upper extremity is 2 hours,

A

T

67
Q

Pain management in the upper extremity is an important determinant of recovery and overall function

A

T

Plastic Surgery( Grabb)Ali jasim (92 decks)

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