1 - Hand And Wrist (1) Flashcards

1
Q

What is location of insertion for flexor digitorum superficialis?

A

Middle phalanx

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2
Q

What are the muscles in the compartment affected by DeQuervian Tenosynovitis?

A

Abductor Pollicis Longus and Extensor Pollicis Brevis

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3
Q

Name the muscles of the 1st tendon compartment of the wrist:

A

Abductor pollicis longus

Extensor pillicis brevis

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4
Q

Name the muscles of the 2nd tendon compartment of the wrist:

A

Extensor carpi radialis longus and brevis

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5
Q

Name the muscles of the 3rd tendon compartment of the wrist:

A

Extensor pollicis longus

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6
Q

Name the muscles of the fourth tendon compartment of the wrist:

A

Extensor digitorum

Extensor indicis

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7
Q

Name muscles of the fifth tendon compartment of the wrist:

A

Extensor digiti minimi

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8
Q

Name the muscles of the sixth tendon compartment of the wrist:

A

Extensor carpi ulnaris

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9
Q

Which tendon compartments extend the wrist?

A

Two and six

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10
Q

Which tendon compartment extends all four fingers?

A

Four

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11
Q

What are juncturae tendinum?

A

Tendon interconnections

Can complicate locating a specific injury

Kinda like collateral circulation

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12
Q

For the proximal, middle, and distal phalanx, where are the growth plates?

A

On the proximal end

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13
Q

For the metacarpals, which end is the growth plate on?

A

Distal end

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14
Q

Lunate fx’s commonly produce what type of fx?

A

Die punch

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15
Q

Hamate fx’s are commonly associated with which sport?

A

Tennis (FOOSH)

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16
Q

Triquetrum fx’s commonly produce what type of fx?

A

Avulsion

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17
Q

Ganglion cysts commonly emerge as a result of a tear in the:

A

Scapholunate ligament

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18
Q

What is Kienbock disease?

A

Idiopathic necrosis of the lunate

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19
Q

How will Kienbock disease appear on radiograph?

A

Sclerotic lunate (more radiopaque than the other carpals)

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20
Q

What are the three areas that must be palpated as part of a wrist exam for suspected scaphoid fx?

A
  1. Snuffbox with wrist in ulnar deviation
  2. Dorsoradiocarpal joint at scapholunate interval
  3. Scaphoid tubercle
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21
Q

DDx radial-sided wrist pain (list five):

A
  1. Thumb base (carpometacarpal joint 1) OA
  2. Scaphoid fx
  3. de Quervain tenosynovitis
  4. Intersection syndrome
  5. Scapholunate ligament insufficiency
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22
Q

DDx ulnar-sided wrist pain (list six):

A
  1. TFCC injury
  2. DRUJ instability
  3. Ulnar impaction syndrome
  4. Kienbock disease
  5. Ulnar neuropathy at Guyon canal
  6. ECU tendon subluxation
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23
Q

TFCC stands for:

A

Triangular fibrocartilage complex

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24
Q

DRUJ stands for:

A

Distal radioulnar joint

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25
Q

ECU stands for:

A

Extensor carpi ulnaris

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26
Q

What are the components of the TFCC?

A
  1. The articular disc
  2. The dorsal and volar radioulnar ligaments
  3. The meniscus homologue
  4. The extensor carpi ulnaris tendon sheath
  5. The ulnocarpal ligaments
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27
Q

What tendons border the anatomical snuffbox:

A

Extensor pollicis brevis

Extensor pollicis longus

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28
Q

What intersection syndrome?

A

Pain due to inflammation at the crossing of extensor pollicis longus over extensor carpi radialis longus and brevis

Common in weigh lifters, d/t repetitive wrist extension

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29
Q

Describe Dupuytren’s Contracture:

A

Thickened nodule on palmar aponeurosis, proximal to the MCP

Grade 1 - nodule
Grade 2 - some flexion
Grade 3 - full forced flexure

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30
Q

Which type of arthritis often presents with ulnar deviation in late-stage dz?

A

RA

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31
Q

Which type of arthritis typically affects the PIPs and DIPs?

A

OA

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32
Q

Thenar atropy is associated with which nerve?

A

Median

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33
Q

Hypothenar atrophy is associated with which nerve?

A

Ulnar

34
Q

Two point discrimination of __mm is considered normal:

A

5

35
Q

In a nail injury, damage to the ___ ___ could result in permanent deformity

A

Germinal matrix

36
Q

What is a transverse physeal injury to the distal phalanx that may displace and require extraction of interposed nail matrix to prevent malunion?

A

Seymour fracture

37
Q

How are symptomatic subungal hematomas typically treated?

A

Decompression (punch a small hole in the nail, let the blood drain out)

Cautery, 18-gauge, whatever you got

38
Q

If the subungual hematoma is greater than __ %, must remove nail and repair underlying nail matrix lesion:

A

50

39
Q

When working on the nail, what three things must you consider first:

A
  1. Adequate anesthesia
  2. Hemostasis
  3. Sterile preparation of the finger
40
Q

What type of sutures are recommended when working in the nailbed?

A

Absorbable gut suture

41
Q

Wound management post-procedure (nail injuries):

A

Keep it clean and dry

Non-adherent sterile gauze

Xeroform dressing

Splint finger for protection

42
Q

What’s the MC pathogen in hand infections?

A

Staphylococcus aureus

43
Q

What is the paronychia?

A

The soft tissues directly surrounding the fingernail

44
Q

Felon vs herpatic whitlow - how to differentiate?

A

Small vesicles suggest herpetic whitlow

45
Q

Felons are characterized by:

A

Severe pain and swelling in the fingerpad

The entire pulp is swollen, erythematous, and tender

46
Q

Swelling associated with a felon or paronychia should not extend proximal to the __ __ __:

A

Distal flexion crease

If it does, possibly infection of tendon sheath

47
Q

What surgical procedure is commonly required for a felon?

A

I and D

Either central volar longitudinal or dorsal midaxial

48
Q

After and I and D for felon, do you suture the wound?

A

NO! Let that sucker drain, that’s why you cut ‘em.

Allow the wound to close by secondary intention

49
Q

Untreated felons can lead to:

A

Osteomyelitis of the distal phalanx

50
Q

Goals of treatment for finger amputations:

A

Provide a tip with good soft tissue coverage, adequate sensation, and to preserve as much length as is consistent with good function

51
Q

When should replantation be considered?

A

Thumb: amputated at or proximal to the IP-joint

Finger: amputated proximal to the middle of the middle phalanx, or when multiple fingers are amputated

52
Q

How to care for the amputated part?

A

Wrap in sterile gauze soaked in normal saline

Placed in plastic bag

Bag goes on ice

53
Q

What important of patient history must be obtained amidst the chaos of an amputation?

A

Tetanus immunization status

54
Q

Common adverse outcomes of amputations:

A
Painful stump
Loss of motion, grip or pinch strength
Infection/necrosis
Cold sensitivity
CRPS
55
Q

Flexor digitorum superficialis inserts:

A

On the middle phalanx

56
Q

Flexor digitorum profundus inserts:

A

On the distal phalanx

57
Q

What is Jersey Finger? Why is it called that?

A

Flexor tendon injury or rupture

Commonly occurs when a player grabs a jersey during football, rugby, etc

58
Q

The pt cannot flex at the DIP joint - which tendon is ruptured?

A

Flexor digitorum profundus

59
Q

In an FDP rupture, a radiograph may show:

A

An avulsed fragment of the distal phalanx

60
Q

Loss of flexion and of grip and pinch strength in the involved and adjacent fingers suggests:

A

Flexor tendon injury

61
Q

Surgical exploration of flexor tendon injuries should be done how soon after the injury?

A

As soon as possible, within one week

62
Q

What is a boutonniere deformity?

A

Extension deformity at the PIP joint and hyperextension deformity at the DIP

63
Q

Boutonniere deformity is caused by a rupture of the:

A

Central portion of the extensor tendon at its insertion into the middle phalanx

64
Q

In a boutonniere injury, the PIP joint flexes from the unopposed pull of the:

A

Flexor tendon

65
Q

Tx for boutonniere:

A

PIP joint splinted in extension for 6 weeks in young people, 3 weeks in older folks

DIP is left free

66
Q

Describe de Quervain tenosynovitis

A

Swelling or stenosis of the sheath that surrounds the Abductor Pollicis Longus (APL) and Extensor Pollicis Brevis (EPB) tendons on the thumb side at the wrist (1st dorsal compartment)

67
Q

De Quervain tenosynovitis is commonly seen in:

A

The postpartum period (repetitive motion, picking up baby)

68
Q

What is the test used to evaluate for de Quervain tenosynovitis:

A

Finkelstein (fist the thumb, ulnar deviation, positive pain)

69
Q

Tx for de Quervain tenosynovitis:

A

2 wks NSAIDS

Spica splint

If that fails, steroid injection

70
Q

Dupuytren’s disease commonly seen in:

A

DM
Smoking
Repetitive trauma (vibration)

71
Q

Which finger is MC to Dupuytren?

A

4th digit

72
Q

Early stage Dupuytren appearance:

A

A palmar nodule that may resemble a callus

73
Q

Distal radial fx - articular step-off more than ___mm considered problematic:

A

2

74
Q

Describe mallet finger:

A

Caused by rupture or avulsion of the insertion of the extensor tendon at the base of the distal phalanx

75
Q

Name a possible adverse outcome of mallet finger:

A

Permanent flexion of the DIP joint

76
Q

How long to wear the stack splint for mallet finger?

A

6 to 8 weeks

77
Q

What is the most useful clinical test to assess carpal tunnel syndrome?

A

Median nerve compression test

78
Q

What is Phalen Maneuver?

A

Place the wrists in flexion (pt pushes the dorsal aspects of the hands against each other) x 60 seconds

Aching and numbness within the median nerve root distribution is a positive test for carpal tunnel

79
Q

What is Tinel Sign?

A

Tapping over the median nerve producing tingling, in the digits of the median nerve distribution is positive test for carpal tunnel

80
Q

How do you count cows?

A

With a cowculator