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Large Animal Surgery > Sequestrum > Flashcards

Flashcards in Sequestrum Deck (23):
1

A necrotic piece of bone that is separated from viable parent bone by infection or inflammatory debris or both is known as what?

Sequestrum

2

If you have a laceration with exposed bone that is chronic, purulent and non-healing what are 2 differentials?

- Sequestrum
- Foreign body

3

What are 4 history factors associated with a sequestrum?

- Trauma
- Slow or non-healing wound
- Intermittent drainage
- Reoccurring after a stop/decrease in antibiotics use

4

An area of lucent granulation tissue surrounding a sequestrum is known as a what?

Involucrum

5

What are 3 aspects of lameness that are associated with sequestrums?

- Generally not lame
- Resent deep palpation
- Lameness may subside then reappear weeks later

6

If lameness is seen with a sequestrum is could be due to what?

Pressure on soft tissue

7

T/F: Sequestrums are usually immediately apparent on radiograph.

False - They are NOT usually immediately apparent on radiograph.

8

What are 2 examples of adjuncts that can be used with radiography in order to locate a sequestrum?

- Positive contrast fistulography
- Metal probe

9

What kind of bones are more prone to sequestration?

Bones with less soft tissue protection.

10

What is the treatment of choice for a sequestrum?

Surgical management

11

In a laceration with bone exposure, removal of the sequestrum should take place in what time frame?

17-21 days

12

What shape skin incision is often used when dealing with a sequestrum?

Elliptical

13

What is a good diagnostic to use when an sequestrum is involved?

Deep culture

14

What are 3 aspects of surgery for a sequestrum?

- Extensive bony debridement
- Curettage
- Copious lavage

15

What type of healing is used for wounds with a sequestrum?

Second intention healing

16

What can be used over a wound from a sequestrum?

Pressure bandage

17

Are sequestrums the same or different in color from the surrounding bone?

Different color than normal bone.

18

T/F: Sequestrums can be easily separated from healthy bone.

True

19

How long are antibiotics given post-op after surgery for a sequestrum?

5 days

20

How long is a bandage used post-op after sequestrum surgery?

4 weeks

21

Stall rest is recommended for how long after sequestrum surgery?

6 weeks

22

If there is a large blemish left after surgery for a sequestrum, how long can it take to disappear?

Up to a year.

23

What type of prognosis does sequestrum surgery have?

Good for life and function