Proven Biomechanical Stability

Demonstrated in Multiple Peer-Reviewed Publications

Posterior Cages vs. Plated ACDF

A biomechanical study of seven cadaveric cervical spine specimens.
Range of motion (ROM) assessed in flexion-extension, lateral bending, and axial rotation.
The biomechanical effectiveness of bilateral posterior cages in limiting cervical segmental motion is comparable to single-level plated ACDF.
Supplementing ACDF with bilateral posterior cervical cages significantly increases stability.

Comparable Stability to Plated ACDF

Improved Stability when compared to Plated ACDF

Voronov LI, Siemionow KB, Havey RM, Carandang G, Phillips FM, Patwardhan AG. Bilateral posterior cervical cages provide biomechanical stability: assessment of stand-alone and supplemental fixation for anterior cervical discectomy and fusion. Medical Devices (Auckl). 2016;9:223-230. doi:10.2147/MDER.S109588.

Posterior Cervical Cages vs. Lateral Mass Screw & Rod Construct

A biomechanical study of six cadaveric cervical spine specimens.
Range of motion (ROM) assessed in flexion-extension, lateral bending, and axial rotation.
Bilateral posterior cages provide similar cervical segmental stability to a lateral mass screw and rod construct.
Supplementing a lateral mass construct with bilateral posterior cervical cages significantly increases stability.

Comparable Stablility to LMS Screw & Rod

Improves Stability when combined with LMS Screw & Rod construct

Voronov LI, Siemionow KB, Havey RM, Carandang G, Patwardhan AG. Biomechanical evaluation of DTRAX® posterior cervical cage stabilization with and without lateral mass fixation. Med Devices (Auckl). 2016 Aug 23;9:285-90. doi: 10.2147/MDER.S111031. PubMed PMID: 27601934

Posterior Cervical Cages with Anterior Cervical Integrated Cages

A biomechanical study of seven cadaveric cervical spine specimens.
Range of motion (ROM) assessed in flexion-extension, lateral bending, and axial rotation.
Supplementing anterior integrated interbody cages with bilateral posterior cervical cages:
- Significantly improves biomechanical stability
- Decreases wedge angle
- Increases posterior disc height
- Increases foraminal height
The biomechanical effectiveness of bilateral posterior cages combined with an anterior integrated cage is comparable to a plated ACDF.

Effect of Posterior Cervical Cages Supplemental to Anterior Cervical Integrated Cage Fusion on Lordotic Alignment, Foraminal Height, and Intersegmental Space Saeed Khayatzadeh, PhD, Hines, IL, US, Robert M. Havey, MS, IL, US, Gerard Carandang, MS, Hines, IL, US, Jorge I. Romo, BS, MD, Maywood, IL, US, Leonard I. Voronov, MD, PhD, Hines, IL, US, Avinash G. Patwardhan, PhD, Maywood, IL, US

Stand-alone Posterior Cervical Cages

A biomechanical study of five cadaveric cervical spine specimens.
Range of motion (ROM) assessed in flexion, extension, lateral bending, and axial rotation.
Foraminal distraction measured using a 3D C-arm system and 2D rendered images of the in-plane foraminal space.
Bilateral posterior cervical cages decrease intervertebral motion, increases foraminal area, and maintain decompression during bending activities.

Leasure JM, Buckley J. Biomechanical evaluation of an interfacet joint decompression and stabilization system. J Biomech Eng. 2014 Jul;136(7). doi: 10.1115/1.4026363. PubMed PMID: 24389961; PubMed Central PMCID: PMC4056421.

Facet Joints Offer Favorable Cervical Anatomy

Facet joints offer is comparable surface area to interbody.
Because the facet joint is a “saddle joint,” preventing translation of its articular surfaces can result in stabilization and reduced range of motion.
The axial load placed on the facets may also facilitate arthrodesis and bony fusion.

Panzer MB, Cronin DS. C4-C5 segment finite element model development, validation, and load-sharing investigation. J Biomech. 2009 Mar 11;42(4):480-90. doi: 10.1016/j.jbiomech.2008.11.036. Epub 2009 Feb 5. PubMed PMID: 19200548.

As with all medical devices, there are risks and considerations to device use. Please refer to the device labeling for a full discussion of potential risks, contraindications, warnings, precautions, and instructions for use.

The information presented on this website is intended only as a brief summary for visitor convenience. Not all products or indications are cleared in every country and may be subject to further local variations. For specific product information, you should always consult the local product documentation. For advice on medical issues, you should always consult your local medical practitioner.