6. Large animal casting Flashcards Preview

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Flashcards in 6. Large animal casting Deck (14)
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1

Principles of casting

Smooth contour
No wrinkles = no pressure sores
A joint above and below
Never end in the middle of a long bone or at the level of a fracture

2

Cast uses

IMMOBILIZATION
lacerations
fracture stabilization
Transfixing pin casting
Support for fracture
Soft tissue injuries

3

Ideal casting material properties

lightweight
Rapid set
Inexpensive
Easy to apply
Durable

4

Casting material options

Fiberglass casting tape
Plaster of paris

5

Fiberglass properties

Lightweight
Rapid set <5-7min
Easy

6

Plaster of Paris properties

Cheap
Long set >24hrs
Messy
Poor strength to weight ratio
HEAVY

7

Complications of immobilization

Articular cartilage degeneration
Loss of bone density
Decreased muscle strength

8

Cast application

GA or standing (slipper foot, bandage cast)
Hole through hoof for giggle wire
Stockinetter 2.5-3x length of cast (INCORPORATE THE FOOT)
Extra padding at proximal aspect and around coronary band and fetlock region
Overlap 50%
No fingerprints, wrinkles
Elastikon to seal top of cast and grip on bottom

9

Cast removal

Saw
Gigli wire
Cast spreaders
GLOVES

10

Evaluation post removal

Radiographs - fractures present?
Continued stall rest - fracture? --> for >12wks
Bandage placed after cast removal

11

Cast complications (5)

Swelling
Foul odor
Moisture
Cracks
Increased temperature

12

Why complications

Poor placement
Poor owner or horse compliance
Subsolar abscess
Post op complications
Septic process under cast

13

Clinical signs of failure

LAMENESS
swelling
odor, moisture, cracks
increase temperature

14

When to change cast

AT LAMENESS
Q6wk - adults
Q7-10d - neonates
If swollen during placement - 3-5d later