2 - Hand And Wrist (2) Flashcards

1
Q

Which portion of the flexor sheath is most involved in triggering?

A

A1 (first annular pulley)

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2
Q

Describe trigger finger:

A

Stenotic or inflamed annular ligament resulting in limited movement of the tendon under the pulley

Finger may snap or lock during flexion of the finger or thumb

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3
Q

MC affected fingers for trigger finger?

A

3rd and 4th digits

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4
Q

Tx for trigger finger:

A

Steroid injection at tendon sheath (do NOT inject directly into tendon!)

Splinting, therapy

60% “curative”

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5
Q

Stenosing tenosynovitis is AKA:

A

Trigger finger

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6
Q

About half of the patients presenting with trigger finger also have:

A

Carpal tunnel syndrome

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7
Q

Nerve distribution in the hand for median nerve:

A

Palmar

1st through 3rd digits AND lateral half of 4th digit

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8
Q

What is the MC compression neuropathy in the upper extremity?

A

Carpal tunnel syndrome

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9
Q

What are the structures in the carpal tunnel?

A

Median nerve

Flexor pollicis longus

Flexor digitorum profundus tendons (4)

Flexor digitorum superficialis tendons (4)

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10
Q

Thenar atrophy may be suggestive of:

A

Carpal tunnel syndrome

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11
Q

Two tests for carpal tunnel?

A

Durkan’s

Phalen’s

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12
Q

What is the most useful confirmatory test for carpal tunnel (though rarely required for Dx)

A

Nerve Conduction Velocity testing

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13
Q

Tx for carpal tunnel:

A

Wrist splint worn especially at night

Short-term course of NSAIDs

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14
Q

Injections for carpal tunnel?

A

Has diagnostic and therapeutic benefits, but improvement may be temporary

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15
Q

Surgery for carpal tunnel?

A

If other stuff fails

Cut that transverse carpal ligament

Very fast and easy surgery, but not without risks

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16
Q

What is the MC soft tissue tumor of the hand?

A

Ganglion Cyst

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17
Q

Common locations for ganglion cysts?

A

Dorsum of the wrist (MC)

Volar radial aspect of the wrist

Base of the finger

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18
Q

Volar radial ganglion cysts?

A

Can adhere to radial artery - don’t fuck with them

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19
Q

Tx for ganglion cysts:

A

Conservative management - immobilize the wrist

You can aspirate, but it’s just gonna come back, maybe worse

Excision is optional, but again, they come back sometimes

Overall, best to leave it alone as long as it’s not causing significant impairment

20
Q

The ulnar collateral ligament (UCL) of the thumb is required for:

A

Pinching

21
Q

Acute UCL injury is AKA:

A

Skier’s thumb

22
Q

Chronic UCL injury is AKA:

A

Gamekeeper’s thumb

23
Q

How are thumb UCL injuries treated?

A

Cast or splint

Immobilization for 4 weeks

24
Q

What is the MC carpal fracture?

A

Scaphoid fx

25
Q

Scaphoid fx’s are prone to:

A

Proximal osseous necrosis and poor healing

26
Q

The majority of scaphoid fx’s occur in:

A

The middle of the bone (or waist)

27
Q

Displaced scaphoid fx’s of more than ___mm have a high rate of nonunion

A

1

28
Q

Clinical presentation of scaphoid fx:

A

Pain in the scaphoid

29
Q

Scaphoid fx’s are uncommon in which age groups?

A

Young children and older adults

30
Q

MC cause of scaphoid fx?

A

FOOSH

31
Q

If you have a high suspicion for scaphoid fx but the radiograph is negative, you can order:

A

MRI (not CT)

32
Q

Which type of scaphoid fx’s need surgical management to mitigate risk of malunion / necrosis?

A

Waist and proximal

33
Q

Kienbock’s Disease is:

A

Osteonecrosis of the carpal lunate

34
Q

Kienbock disease MC affects:

A

Men age 20 to40

35
Q

Examination for Keinbock reveals:

A

Tenderness over the lunate bone

Decreased grip strength

Dorsal swelling

Limited wrist motion

36
Q

X-rays for Keinbock reveals:

A

Increased opacity of the lunate (early)

Collapse of the lunate bone, degenerative arthritis (late)

37
Q

What is a Bennet’s Fx?

A

First metacarpal fracture

38
Q

What is a Rolando fracture?

A

First metacarpal fracture

39
Q

Which is worse, Bennet or Rolando?

A

Bennet

40
Q

What muscles cause the deforming force in a Bennet’s fx?

A

Abductor Pollicis Longus and Adductor Pollicis Longus

41
Q

Presentation of first metacarpal fx?

A

Swelling and ecchymosis about the base of the thumb are common

Base of thumb painful to palpation

Pt unable to move thumb actively without pain

42
Q

Tx for first metacarpal fx?

A

Pin it

43
Q

What is the mallet finger surgery?

A

Open reduction internal fixation and percutaneous pinning

44
Q

Which mallet finger patients get surgery?

A

Those seen >12 post injury

Those w >50% of the articular surface damaged

45
Q

Adverse outcomes of first metacarpal fxs?

A

Posttraumatic arthritis CMC joint
Chronic pain
Loss of motion
Loss of pinch strength

46
Q

Dont you hate it when someone answers their own questions?

A

I do