AO Technical Commission Approved

Tips and Tricks for Removing Problematic Implants: Plates

When all the screws have been removed, the plate can also be removed. As a general rule, this should not pose a problem provided that there is sufficient access.

Tips and tricks for removing minimally invasively inserted plates

  • In the insertion area, use a chisel to release the plate.
  • Try to extract the plate (see below); if this fails to achieve the desired result:
  • Release the plate with the aid of a chiselexactly the same width as the plateeither above or below the plate.
  • Use right-angled chisels in order to progress along the entire edge.
  • All these chisels should be advanced with care or they should be propelled forward with light hammer blows.
  • In our experience, a traditional Kntscher extraction hook with a long shank and a recess for a slot hammer has proved to be effective (Fig 9). Using light hammer blows, the plate can then be loosened and progressively extracted. Other types of hook can also be used.
  • Check whether there is any bleeding from the position of the plate and from the entire canal of the former implant.
  • Another way of releasing a plate is to rotate it about its longitudinal axis.

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. 

Legal restrictions

This work was produced by AO Foundation, Switzerland. All rights reserved by AO Foundation. This publication, including all parts thereof, is legally protected by copyright.

Any use, exploitation or commercialization outside the narrow limits set forth by copyright legislation and the restrictions on use laid out below, without the publisher‘s consent, is illegal and liable to prosecution. This applies in particular to photostat reproduction, copying, scanning or duplication of any kind, translation, preparation of microfilms, electronic data processing, and storage such as making this publication available on Intranet or Internet.

Some of the products, names, instruments, treatments, logos, designs, etc referred to in this publication are also protected by patents, trademarks or by other intellectual property protection laws (eg, “AO” and the AO logo are subject to trademark applications/registrations) even though specific reference to this fact is not always made in the text. Therefore, the appearance of a name, instrument, etc without designation as proprietary is not to be construed as a representation by the publisher that it is in the public domain.

Restrictions on use: The rightful owner of an authorized copy of this work may use it for educational and research purposes only. Single images or illustrations may be copied for research or educational purposes only. The images or illustrations may not be altered in any way and need to carry the following statement of origin “Copyright by AO Foundation, Switzerland”.

Check www.aofoundation.org/disclaimer for more information.


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.

2020 IM covers

AO TC Innovations Magazine

Find all previous issues of the AO TC Innovations Magazine for download here.

Meet the Experts

Directly learn about AO Approved Solutions from the Experts themselves.

Innovation Awards

Innovation awards

Recognizing and fostering excellence in surgical innovation.

Cookies help us improve your website experience.
By using our website, you agree to our use of cookies.