One of the most common causes for pain in the cervical spine is referred to as symptomatic cervical disc disease. It is basically defined as neck or arm (radicular) pain and/or a functional/neurological deficit with at least one of the following conditions confirmed by imaging (CT, MRI, or x-ray):
- Herniated nucleus pulposus
- Spondylosis (defined by the presence of osteophytes)
- Loss of disc height
Historically, many of these patients are treated with anterior cervical discectomy and fusion. Cervical total disc replacement provides spine surgeons with a proven alternative to significantly reduce pain while restoring biomechanical stability, disc height and providing the potential for motion at the affected vertebral segment.
The new prodisc-C nova is based on the same ball-and-socket design as prodisc-C, which has been successful in clinical use for many years. The ball-and-socket articulation permits a physiological range of motion and the restoration of the anatomical balance. The fixed center of rotation resists shear forces and enables controlled motion.
Prodisc-C nova maintains many of the features of Prodisc-C, such as excellent primary fixation (keels), a simple and reproducible surgical technique as well as the proven CoCrMo/UHMWPE articulation, while offering these additional features:
- Enhanced MRI compatibility
- Improved multilevel capability
- Anatomical footprint design
- One-step keel preparation
For improved MRI, the endplates are made of titanium alloy, reducing the amount of artifacts around the implant. The reduced keel size and its tripod arrangement facilitate a multilevel application. The endplates have a trapezoidal shape for optimal fit and coverage of the vertebral endplates.
The surgical technique of the prodisc-C nova is simple and consists of three main steps:
- Keel preparation
- Implant insertion
The prodisc-C nova precision cutting system performs all three keel cuts in one single step within a few seconds using reciprocating saw blades that are guided by the trial implant.
A 36-year-old man with a previous history of mild chronic neck pain developed signs and symptoms of myelopathy in four limbs after a manipulation. The MRI showed an important compressing median herniated
disc at C5/C6.
Case provided by Bonny Noens, Gent, Belgium
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.