External coaptation Flashcards Preview

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Flashcards in External coaptation Deck (31):
1

What does external coaptation control?

1. bending force
(some torsion)

2

What does external coaptation NOT control?

1. compression
2. tension

3

What is required for external coaptation to be effective?

the joint above AND below must be immobilized

4

What areas is external coapatation ineffective for?

1. femoral
2. humeral
3. pelvic fractures

5

What is external coaptation?

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

6

What is the difference between external coaptation and external fixation?

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

7

What are the advantages of external coaptation?

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

8

What are the disadvantages of external coaptation/

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

9

What are indications for use of external coaptation

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

10

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

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

11

why include the toes?

to prevent venous congestion (leave out 3 and 4)

12

why leave out toes 3 and 4?

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

13

why leave out toes 3 and 4?

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

14

what happens if EC doesn't fit right?

rub sores

15

What happens if EC too loose?

limb comes off with badage

16

What are forms of external coaptation?

1. cast
2. splint
3. bandages
4. slings
5. braces

17

Why are casts minimally padded?

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

18

What are casts used for

1. fracture stabilization
2. joint immobilization
3. support following arthrodesis

19

What are splints?

stiff part does not completely encircle the limb.

20

What are splints used for?

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

What is a spica splint?

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

22

What is a schroeder thomas splint?

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

23

What are bandages for?

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

24

What do slings do?

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

25

What does an ehmer sling do?

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

26

What does an ehmer sling do?

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

27

What is an issue with the ehmer sling?

can produce very bad pressure sores if not carefully monitored

28

What is the use of the sciatic sling?

to discourage knuckling in limbs with incomplete sciatic palsy

29

What is the velpeau sling?

forelimb nonweightbearing sling
used after reduction of shoulder luxation, scapular fracture other shoulder repairs

30

What are bracies?

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

31

What are braces?

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