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Hand Surgery > Facts from Questions > Flashcards

Facts from Questions Flashcards

1
Q

management of acute injuries of sagittal bands?

A

in normal people can be treated with extension splinting

in professional athletes, acute open repair

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2
Q

indication for collagen conduits:

A

small (<4cm) defects in small diameter, simple sensory nerves
- for most everything more complex, choose autograft (sural or MABC)

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3
Q

proper collateral ligament of the digits:

A

restraint to varus/valgus with joint in flexion

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4
Q

accessory collateral ligament of the digits:

A

restraint to varus/valgus with joint in extension

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5
Q

sural artery pedicle is to the:

A

gastrocnemius - both medial and lateral heads.

85% of the time there isa single vascular supply

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6
Q

what causes swan neck deformity?

A

chronic volar plate ruptures

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7
Q

utility of basal joint injections for OA?

A

no difference between cortisone, hyaluronan, and saline

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8
Q

indications for a Darrach procedure?

A

only in low demand elderly patients

DRUJ arthritis/instabilty

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9
Q

best treatment for heavy laborers with DRUJ OA and TFCC insufficiency?

A

TFCC reconstruction and ulnar hemiresection arthroplasty

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10
Q

most common causes of radial tunel syndrome:

A
  • fibrous adhesions between brachialis and BR
  • the leash of henry (radial recurrent vessels)
  • fibrous edge of ECRB
  • arcade of frohse (supinator arch)
  • fibrous distal edge of supinator
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11
Q

best tendon transfers for PIN palsy:

A

FCR to the common digital extensors

PL to the EPL

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12
Q

Leri-Weill Dyschondrosteosis:

A
  • bilateral Madelung deformities

- SHOX gene mutation

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13
Q

SHOX gene mutation is:

A

Leri-Weill dyschondrosteosis

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14
Q

treatment of volar PIP dislocations

A

reduction and extension splinting for 6 weeks

- frequently with central slip injuries, and if not splinted can lead to boutonniere deformities

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15
Q

Merkels skin receptor

A
  • light touch
  • pressure
  • 2-point discrimination
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16
Q

Pacinian corpuscles

A
  • stretching of skin
17
Q

Meisner’s corpuscles

A
  • rapid response to light touch
18
Q

detection of fanconi anemia?

A
  • CBC
  • peripheral blood smear
  • DNA breakage analysis
19
Q

Apert’s syndrome

A

facial dysmorphism and complex syndactyly of hands

- FGFR2 mutant

20
Q

FGFR2 mtuation causes

A

Apert’s syndrome

21
Q

SHH mutations cause:

A

radial longitudinal deficiencies

22
Q

best flap for defects of the dorsal thumb?

A

first dorsal metacarpal artery flap (Kite flap/FDMA)

23
Q

outcomes after pisiformectomy?

A

no deficiency in grip strength, power, or wrist motion

24
Q

after carpal tunnel release, grip and pinch strength should return to normal by:

A

3 months

25
Q

island volar advancement flaps to the thumb tip can be used for defects up to size:

A

3.5cm

26
Q

How long does it take split thickness skin graft to re-epithelialize

A

2-3 weeks

27
Q

Primary pathologic cell in Giant Cell Tumor of Tendon Sheath:

A

lipid laden foam cell

- disordered cellular lipid metabolism

28
Q

Role of TGF-b in Dupuytren contracture

A

TGF-b encourages differentiation of myofibroblasts (from fibroblasts) which are the contractile cell type in Dupuytren’s

29
Q

Apical ectodermal ridge

A

controls longitudinal forearm growth

- express Homeobox proteins

30
Q

Wnt signalling in limb development

A

controls volar/dorsal differentiation

31
Q

Role of Sonic Hedgehog Protein in limb development

A

controls radio-ulnar differentiation

- ulnar forearm and ulnar 4 digits

32
Q

Principal function of the sagittal bands?

A

extension of the MP joint

33
Q

Recurrence rates of giant cell tumor of tendon sheath

A

4-44%

  • worse with extensive bone involvement, spread to tendons or joint capsule
  • can consider radiation for extensive disease
34
Q

Most common Martin Gruber anastomosis

A

type 1 - motor median to ulnar, innervating median intrinsics

35
Q

Which ligament’s humeral origin is at the axis of rotation of the elbow

A

lateral ulnar collateral

- it is isometric and maintains static tension throughout elbow ROM

36
Q

Lipoma arborescens

A

tumor with frondlike projections
histo wtih mature lipocytes
suprapatellar or in the elbow
replacemnt of the synovial lining with pathologic lipocytes

37
Q

Lack of thumb development would typically be caused by:

A

SHH concentration abnormally in the anterior region of the ZPA.

  • typically concentrated in the posterior region of the ZPA which corresponds to the ulna and ulnar 4 digits differentiation
  • if concentrated whre the thumb wil ldevelop, will fuck up the thumb

Hand Surgery (2 decks)

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