Broken Screw Removal
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Transcript of Broken Screw Removal
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Handling TechniqueRemoval of broken screws
Septian Dwi Nurcahyo
030.06.241
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Situation A
Screw is broken behind the screw head
and shaft is visible on the surface or
slightly below the surface
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Required instruments
Gouge
Pliers for Screw Removal
Pliers for Screw Removal, narrow
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1.Incision and access
Make a stab incisionorthogonally to the screw tobe removed (along the lengthof the plate) and introduce
the soft tissue preader withtrocar into the opening.
Once the instrument touchesthe screw, open the oft issuepreader and remove the
trocar. Open the soft tissue spreader
until the screw to be removedcan be easily accessed.
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2. Exposing the screw shaft
Use the gouge toremove the bonesurrounding the
screw shaft toapproximately 5mm in depth.
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3. Remove screw
Rotate screw out with
Pliers for Screw
Removal Important: Remove
the screw stump by
rotating it out do not
pull or bend !!!
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Situation B
Broken screw is not on the
surface
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Required instruments
Hollow reamer
Extraction Bolt
T-Handle with Quick Coupling
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1.Incision and access
Make a stab incisionorthogonally to the screw tobe removed (along the lengthof the plate) and introduce
the soft tissue preader withtrocar into the opening.
Once the instrument touchesthe screw, open the oft issuepreader and remove the
trocar. Open the soft tissue spreader
until the screw to be removedcan be easily accessed.
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3. Assemble hollow reamer
The hollow reamer (complete) consists of
three individual parts:
reamer tube, centring pin and shaft.
1. Connect the centring pin and the shaft
(left-hand thread)
2. Screw the reamer tube over the centring
pin (left-hand thread).
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3. Assemble hollow reamer
Connect the instruments
with the T-Handle with
Quick Coupling. If the
screw is deep in thetissue, attach the
lengthening for
screwdriver shaft.
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4. Expose the screw shaft
Guide the space centringpin into the canal of thebroken screw and turn thehollow reamer
anticlockwise. Remove the centring pin
when it reaches the screwfragment.
Then continue to screw
without the space centringpin approximately 5 mmabove the broken screw.
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5. Remove screw
Connect the extraction
bolt with the T-Handle
with Quick Coupling.
If the screw is deep in
the tissue, attach the
lengthening for
screwdriver shaft.
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5. Remove screw
Position the extractionbolt above the brokenscrew. Rotateanticlockwise whilemaintaining pressure andholding as vertical aspossible.
This ensures a secureconnection between theconical shape of thethread of the extractionbolt and the shaft of thescrew.
Turn anticlockwise untilthe screw shaft iscompletely removed.
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