Titanium Wire with Needle for Canthal Fixation
The Titanium Wire with Needle has been developed to meet the need for improved canthal fixation. The medial and lateral canthal ligaments attach to the medial and lateral orbital rims and provide palpebral fissure. Due to their position in the orbital region, these ligaments often get damaged in midfacial trauma, especially if the naso-orbital-ethmoid (NOE) area is affected, or in cases of damage to the lateral midface.
Furthermore, secondary injuries to these ligaments might appear when surgical exposure is required to gain access to these types of fractures, both in primary or secondary fracture repair. Lastly, restoration of the ligaments can be necessary in cases of congenital deformity such as Treacher Collins syndrome. Precise anatomic restoration of the ligaments is crucial for obtaining satisfactory esthetic results in the midfacial region.
When a ligament is damaged, current surgical practice typically uses stainless steel wire or nonresorbable suture to keep the reposition of the ligaments. However, the main clinical problem associated with stainless steel wire is scatter effects in postoperative imaging. A second clinical problem is the possibility of galvanic corrosion, as titanium plates and screws are often used for the fixation of fractures in close proximity to the damaged canthal ligament. Finally, stainless steel implants are known to elicit a reaction in patients with an allergy to nickel.
The new Titanium Wire with Needle directly addresses these clinical issues by causing minimal scatter, providing compatibility with titanium plates and screws, and eliminating the risk of an allergic reaction. The Titanium Wire with Needle is offered in four sizes, ranging from 26 gauge to 32 gauge. Each wire is mounted with a curved stainless steel needle which is removed after repositioning has been accomplished.
Titanium Wire with Barb and Needle
In addition to the Titanium Wire with Needle, a version with an additional barb at its end has been developed which provides hold in the canthal area.
This device can be used for both conventional transnasal wiring or for the more sophisticated technique developed by Beat Hammer. With this technique, the titanium wire is diverted via the most posterior hole of a compact midface plate that serves as a cantilever in the ipsilateral medial orbital wall region.
The Titanium Wire with Barb and Needle is available in 28 gauge wire size and is mounted with a straight stainless steel needle.
Canthal fixation with Titanium Wire with Needle and Barb.
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.
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.
AO TC Innovations Magazine
Find all issues of the AO TC Innovations Magazine for download here.
Recognizing outstanding achievements in development and fostering excellence in surgical innovation.