21/05/2008
AO Technical Commission Approved

Screw removal Set

The need  to explant screws and plates placed at other institutions using different fixation systems is not an uncommon situation in the life of a surgeon. However, having the right instrumentation in place is not always a matter of course. The new screw removal set was designed to meet these requirement. It is a compact set of screw driver blades that can be used  for removal of 0.9mm and 3.2mm screws with various drive configurations, commonly  used in CMF procedures.

The New Screw Removal Set includes blades for the most common available drive mechanisms including :

  • Cruciform                
  • Torx
  • Hex                        
  • Center (Square)
  • Clutch drive (Slotted)
  • Slotted
  • Phillips                    
  • THORP

An osteotome is included in the set to remove boney in growth around the screw head . It is designed with a hex-coupling allowing it to be used with either a screw driver handle or with a trauma drill.

In addition, the set also contains a broken screw extractor for screw shafts of 1.0 mm to 3.2 mm in diameter with a sheared off head. In smaller diameters the extractor device cores out the bone surrounding the  shaft of the screw and removes it without making contact .The  internal threads will then engage the screw threads and remove it without further trephining of the  bone along the screw length.

For removal of screws with damaged or stripped head a  conical threaded device (quick coupling) or stripped screw extractors (hex coupling) is inserted vertically along the long axis of screw until it engages the core of the screw. The reverse threading of the instrument will then draw the screw (counterclockwise) out of the bony  fragment.

Locking pliers available to help grab and remove screw parts close to the bone surface. As new drives are introduced to the CMF market, additional blades will be made available to complete the universal screw removal set.

Hazards and labeling

Due to varying countries’ legal and regulatory approval requirements, consult the appropriate local product labeling for approved intended use of the products described on this website. All devices on this website are approved by the AO Technical Commission. For logistical reasons, these devices may not be available in all countries worldwide at the date of publication. 


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If you have any comments or questions on the articles or the new devices, please do not hesitate to contact us


"approved by AO Technical Commission" and "approved by AO Foundation"

The brands and labels "approved by AO Technical Commission" and "approved by AO Foundation", particularly "AO" and the AO logo, are AO Foundation's intellectual property and subject to trademark applications and registrations, respectively. The use of these brands and labels is regulated by licensing agreements between AO Foundation and the producers of innovation products obliged to use such labels to declare the products as AO Technical Commission or AO Foundation approved solutions. Any unauthorized or inadequate use of these trademarks may be subject to legal action.

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