Fixation Flashcards

1
Q

Fixation Sequence

A
  1. Underdrill/Overdrill
  2. Countersink
  3. Measure
  4. Tap
  5. Screw
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2
Q

1.5 Screw

A

Overdrill/Glide Hole: 1.5mm
Underdrill/Thread Hole: 1.1mm
Core: 1.0mm
Pitch: 0.5mm

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3
Q

2.0 Screw

A

Overdrill: 2.0mm
Underdrill: 1.5mm
Core: 1.3mm
Pitch: 0.6mm

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4
Q

2.4 Screw

A

Overdrill: 2.4mm
Underdrill: 1.8mm
Core: 1.7mm

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5
Q

2.7 Screw

A

Overdrill: 2.7mm
Underdrill: 2.0mm
Core: 1.9mm
Pitch: 1.0mm

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6
Q

3.5 Screw

A

Overdrill: 3.5mm
Underdrill: 2.5mm
Core: 2.4mm
Pitch: 1.25mm

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7
Q

4.0 Cortical Screw

A

Overdrill: 4.0mm
Underdrill: 2.9mm

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8
Q

4.5 Screw

A

Overdrill: 4.5mm
Underdrill: 3.2mm
Core: 3.0mm
Pitch: 1.75mm

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9
Q

6.5 Cancellous Screw

A

Overdrill: 4.5mm
Underdrill: 3.2mm
Core: 3.0mm
Pitch: 2.75mm

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10
Q

What screws are in the different fragment sets?

A

Mini frag set: 1.5, 2.0, 2.7
Small frag set: 3.5, 4.0 (partially threaded and fully threaded)
Large frag set: 4.5, 6.5 (partially/fully threaded)

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11
Q

4.0 Cancellous Screw

A

OD: 4.0mm
UD: 2.5mm
Core: 2.0mm
Pitch: 1.75mm

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12
Q

3.5 Locking Plate Screw

A

UD: 2.8mm

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13
Q

Cannulated Headless Compression Screw

A

Prox Thread Diameter: 3.5mm
Dist Thread Diameter: 3.0mm
UD: 2.0mm
Guide Wire: 1.1mm

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14
Q

3.0 Cancellous Cannulated Screw

A

UD: 2.0mm
GW: 1.1mm

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15
Q

3.5 Cortical Cannulated Screw

A

OD: 3.5mm
UD: 2.7mm
GW: 1.25mm

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16
Q

4.0 Cancellous Cannulated Screw

A

UD: 2.7mm
GW: 1.25mm

17
Q

4.5 Cancellous Cannulated Screw

A

OD: 4.5mm
UD: 3.2mm
GW: 1.6mm

18
Q

7.0 Cancellous Cannulated Screw

A

UD: 4.5mm
GW: 2.0mm

19
Q

7.3 Cancellous Cannulated Screw

A

UD: 5.0mm
GW: 2.8mm

20
Q

0.028 K-wire

A

0.7mm

21
Q

0.035 K-wire

A

0.9mm

22
Q

0.045 K-wire

A

1.1mm

23
Q

0.054 K-wire

A

1.4mm

24
Q

0.062 K-wire

A

1.6mm