Wrist and Hand trauma Flashcards

1
Q

Crush injury sequelae

A
  1. hemorrhagge
  2. intra/extracellular fluid loss
  3. complicated by multiple problems (need to triage what will be treated first)
  4. need to understand injury to manage
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2
Q

Crush injury management phases

A
  • inflammatory/fibroplasia phase
  • edema control phase
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3
Q

inflammatory/fibroplasia phase goal with crush injuries

A
  • minimize pain
  • reduce edema
  • provide wound care
  • rest and mobilize healing tissues
  • specific technique dependent on mode of medical management
  • Elevation and compression are best ways to get rid of swelling in the hand
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4
Q

Crush injuries

Edema Control goal

A
  • Treatment
  • pain mamagement
  • wound management
  • exercise and activity
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5
Q

Resting splint for crush injuries

A
  • thumb placed in abduction
  • MCP flexed
  • wrist neutral
  • IPs extended
  • direct opposite of claw deformity (ulnar and median nerve damage)
  • volar plate can get tight and its hard to treat easier to prevent
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6
Q

Nerve arterial supply in the hand and how to test

A
  • Allens test
  • occlude the blood supply and have them pump their hand
  • watch for it to blanch then let go of one side and watch how it fills
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7
Q

Flexors zones fingers: zone 1

A
  • Zone 1: from the insertion of the FDP on the distal phalanx to just distal of the FDS insertion on the middle phalanx
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8
Q

Flexer zones on finger Zone 2

A
  • Zone 2: from the distal insertion of the FDS tendon to the level of the distal palmar crease
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9
Q

Flexer zones on finger Zone 3

A

From the neck of the metacarpals, proximally along the metacarpals to the distal border of the carpal tunnel

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10
Q

Flexer zones on finger Zone 4

A

the carpal tunnel

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11
Q

Flexer zones on finger Zone 5

A
  • area just proximal to the wrist
  • to the musculotendinous junction of the extrinsic flexors in the distal flexor
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12
Q

Zones of the thumb
a) zone 1
b) zone 2
c) zone 3

A

a) from the distal insertion of the FPL on the distal phalanx of the thumb to the neck of the proximal phalanx
b) from the proximal phalanx, across the MCP joint to the neck of the wrist metacarpal
c) from the first metacarpal to the proximal margin of the carpal ligament

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13
Q

Kleinert splint

A
  • flexor tendon repair
  • Keeps them from extending too far
  • rubber band will be attached the nail to passive flex
  • use extensors and then passively flex
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14
Q

Dorsal blocking tenodesis splint

A
  • Prevents wrist extension with digital extension
  • get some early isometrics with a place and hold
  • maintain gliding
  • controlled stress with place and hold can reorient collagen
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15
Q

Extensor zones of the fingers
a) zone 1
b) zone 2
c) zone 3
d) zone 4
e) zone 5
f) zone 6
g) zone 7
h) zone 8

A

a) zone 1 - DIP joint region
b) zone 2 - middle phalanx
c) zone 3 - PIP joint region
d) zone 4 - proximal phalanx
e) zone 5 - Apex of the MCP joint region
f) zone 6 - dorm of the hand
g) zone 7 - wrist region/dorsal retinaculum
h) zone 8 - distal and middle forearm

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16
Q

Zones of the extensor portion of the thumb

A
  • T1 = IP joint region
  • T2 = proximal phalanx
  • T3 = MCP joint region
  • T4 = metacarpal
  • T5 = carpometacarpal joint region
17
Q

Allodynia
Hyperalgesia

A
  • normally non-painful stimuli elicit pain
  • response to a noxious stimuli is amplified for prolonged
18
Q

Colles Fx

A
  • FOOSH
  • Dorsal displacement of the radius
  • dinner fork deformity heals displaced
  • CTS with dinner fork due to an extra curve that the median nerve has to curve around
19
Q

Colles fx: closed reduction vs external fixation

A
  • reduce fx and put in a cast = 2º bony healing
  • External fixation: communted fracture increase sites for infection
20
Q

Colles fx healing time

A
  • 6-8 weeks
20
Q

management for colles fx

A
  • closed reduction and casting g
  • long arm (3-6 weeks) then cut to a short arm cast
  • AROM 4-6 weeks
  • PROM residual deficits 6-8 weeks
20
Q

Scaphoid fx: time to heal

A
  • 4 weeks to 20 weeks
  • dependent upon location
  • blood supply –> high incidence of AVN
20
Q

Scaphoid fx: mechanism

A

FOOSH with radial deviation

21
Q

Scaphoid fracture and AVN as well as Herbert screw

A
  • blood supply enters distally and can get cut off easily with this injury
  • the stew pulls the two ends together and 1º bony healing occurs
22
Q

Metacarpal fx mechanism and time to heal

A
  • direct trauma with a flexed MCP
  • 4-6 weeks secondary healing
23
Q

Metacarpal fx management

A
  • ORIF or closed reduction with percutaneous pins
  • stabilize without rotational deformity
  • AROM 3-4 weeks
  • if twist develops there is a problem with the flexor tendons