LCP Hook 3.5 for distal tibia and fibula

Simple olecranon fractures and osteotomies as well as avulsion fractures of the medial and lateral malleolus treated with tension-band fixation are often followed by complications, especially with minimal bone stock/poorly mineralized bone, such as loss of reduction, migration of K-wires, and hardware prominence.

The LCP hook 3.5 enables tension-band plating with use of 3.5 mm screws. The hooks aid fixation of small bone fragments and increase stability. Elongated LCP holes make the plate and its fixation more flexible and allow for controlled compression. The spring effect facilitates reduction and a stable tension-band technique. Its flexible one-third tubular plate design provides an anatomical fit and its low profile minimizes hardware prominence.

The LCP hook 3.5 was primarily intended for treatment of simple fractures of the olecranon and osteotomies of the olecranon for distal humerus fracture treatment creating compression with the long oblique 3.5 mm lag screw. But it has shown its benefits also in avulsion fractures of the distal tibia and fibula.

A 20-year-old construction worker fell from a 3 m height. He sustained a typical posterolateral impression and flake fracture of the talar dome.

Case provided by Christoph Sommer, Chur, Switzerland

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 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.

AO ITC Innovations Magazine

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

Meet the Experts

Directly learn about AO Approved Solutions from the Experts themselves.

Innovation Awards

Recognizing outstanding achievements in development and fostering excellence in surgical innovation.