Sequestrum Flashcards
A necrotic piece of bone that is separated from viable parent bone by infection or inflammatory debris or both is known as what?
Sequestrum
If you have a laceration with exposed bone that is chronic, purulent and non-healing what are 2 differentials?
- Sequestrum
- Foreign body
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
An area of lucent granulation tissue surrounding a sequestrum is known as a what?
Involucrum
What are 3 aspects of lameness that are associated with sequestrums?
- Generally not lame
- Resent deep palpation
- Lameness may subside then reappear weeks later
If lameness is seen with a sequestrum is could be due to what?
Pressure on soft tissue
T/F: Sequestrums are usually immediately apparent on radiograph.
False - They are NOT usually immediately apparent on radiograph.
What are 2 examples of adjuncts that can be used with radiography in order to locate a sequestrum?
- Positive contrast fistulography
- Metal probe
What kind of bones are more prone to sequestration?
Bones with less soft tissue protection.
What is the treatment of choice for a sequestrum?
Surgical management
In a laceration with bone exposure, removal of the sequestrum should take place in what time frame?
17-21 days
What shape skin incision is often used when dealing with a sequestrum?
Elliptical
What is a good diagnostic to use when an sequestrum is involved?
Deep culture
What are 3 aspects of surgery for a sequestrum?
- Extensive bony debridement
- Curettage
- Copious lavage
What type of healing is used for wounds with a sequestrum?
Second intention healing
