Orthopaedic wire Flashcards
1
Q
What is orthopaedic wire made of?
A
316L steel
2
Q
Tensile strength is equal to?
A
TT x R^2
3
Q
Size of wire?
A
cats, small dogs: 0,8mm / 22 G
medium dogs: 1mm / 20 G
large dogs: 1,2 mm / 18 G
4
Q
application ways of orthopaedic wire?
A
Cerklage wire
Hemicerklage
Tensionband
5
Q
Causes for failure?
A
Too thin, inappropriate wire, failure to tighten, insufficient cerklage
6
Q
Types of knots?
A
Twist knot - most common (pull and twist!)
Single loop - need device to tighten
Double loop - as above
7
Q
Loop tension and load before loosening in the different knots?
A
8
Q
Tension wire band - can be used in which fracture surgeries?
A
- olecranon
- greater trochanter
- patella
- tibial tuberosity
- malleoli
- calcaneon
- acromion
- supraglenoid
- styloid process
9
Q
What is the function of tension wire?
A
counters muscle forces and compress (best when limb is loaded)
