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Surgical skills > External coaptation > Flashcards

External coaptation Flashcards

1
Q

What does external coaptation control?

A
  1. bending force

some torsion

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2
Q

What does external coaptation NOT control?

A
  1. compression

2. tension

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3
Q

What is required for external coaptation to be effective?

A

the joint above AND below must be immobilized

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4
Q

What areas is external coapatation ineffective for?

A
  1. femoral
  2. humeral
  3. pelvic fractures
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5
Q

What is external coaptation?

A

the immobilization of a body part using externally applied support. NOT external fixation!!

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6
Q

What is the difference between external coaptation and external fixation?

A

external fixation is direct immobilization of a bone, external coaptation is fixation of a body part (cast, splint, brace, bandage)

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7
Q

What are the advantages of external coaptation?

A
  1. minimal blood supply disruption
  2. minimal effect on physeal growth
  3. sometimes cheaper than surgical repair–BUT requires rechecks!
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8
Q

What are the disadvantages of external coaptation/

A
  1. poor control over compressive and tensile forces
  2. less rigid stabilization
  3. alignment and reduction may be difficult
  4. joints above and below fracture must be immobilized–joint issues adult vs young
  5. inappropriate for humerus, femur, pelvis
  6. rub sores
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9
Q

What are indications for use of external coaptation

A
  1. transverse fractures
  2. fractures stabilized by ANOTHER BONE
  3. immobilizing joints
  4. augmented support of broken bones following surgical repair
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10
Q

What happens if you don’t have external coaptation high enough

A

the EC serves as a fulcrum to concentrate bending forces at the fracture site

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11
Q

why include the toes?

A

to prevent venous congestion (leave out 3 and 4)

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12
Q

why leave out toes 3 and 4?

A

to look for warmth and evidence of swelling–if not touching

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13
Q

why leave out toes 3 and 4?

A

to look for warmth and evidence of swelling–if not touching

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14
Q

what happens if EC doesn’t fit right?

A

rub sores

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15
Q

What happens if EC too loose?

A

limb comes off with badage

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16
Q

What are forms of external coaptation?

A
  1. cast
  2. splint
  3. bandages
  4. slings
  5. braces
17
Q

Why are casts minimally padded?

A

b/c rely on close conformity with underlying limb to max. rotational control

18
Q

What are casts used for

A
  1. fracture stabilization
  2. joint immobilization
  3. support following arthrodesis
19
Q

What are splints?

A

stiff part does not completely encircle the limb.

20
Q

What are splints used for?

A
  1. definitive repair of relatively stable fractures
  2. repair of fractures in young animals
  3. support of operative repairs/reduced luxations
  4. temporary stabilization
21
Q

What is a spica splint?

A

goes up alongside dog’s body, more effectively immobilizes elbow joint

22
Q

What is a schroeder thomas splint?

A

ring attached to rods, stretch leg so ring agianst armpit. May be used for humerus fracture NOT for femoral fractures–quad contracture

23
Q

What are bandages for?

A

used more for covering wounds and providing slight support. may provide temporary support when there is considerable soft tissue swelling

24
Q

What do slings do?

A

hold a limb in a desired position or prevent full weightbearing. usually minimal padding

25
Q

What does an ehmer sling do?

A

flexion and internal rotation of hip to keep hindlimb nonweightbearing, mostly for after hip luxation reduction

26
Q

What does an ehmer sling do?

A

flexion and internal rotation of hip to keep hindlimb nonweightbearing, mostly for after hip luxation reduction

27
Q

What is an issue with the ehmer sling?

A

can produce very bad pressure sores if not carefully monitored

28
Q

What is the use of the sciatic sling?

A

to discourage knuckling in limbs with incomplete sciatic palsy

29
Q

What is the velpeau sling?

A

forelimb nonweightbearing sling

used after reduction of shoulder luxation, scapular fracture other shoulder repairs

30
Q

What are bracies?

A

like splints but padding is not circumferential–usually worn during physical activity

31
Q

What are braces?

A

like splints but padding is not circumferential–usually worn during physical activity

Surgical skills (23 decks)

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