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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Broken Screw Removal

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