Anterior Lumbar Integrated Interbody System

3D-printed porous titanium lumbar interbody with 2-level clearance!

Not Available for Sale in All Markets

Proprietary Design Featuring
Unique 3D-Printed Porous Titanium FLXTM Solution

Learn More About the FLX™ 3D-Printed, Porous Titanium Material Technology Option for STALIF and ACTILIF Devices

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FLX implants include a solid exoskeleton for added strength, along with a proprietary lattice scaffold designed to have a stiffness similar to bone. Reduced device stiffness is known to minimize stress-shielding and enhance the fusion process.


FLX implants include porous radiolucent sections with optimized density to reduce imaging artifacts—enhancing intra-operative visualization & post-operative fusion assessment compared to solid titanium implants.


FLX implants include a FUSE-THRU™ osteoconductive trabecular scaffold, bioengineered to allow the potential for bony on-growth and in-growth throughout the implant. This unique porous structure contains micro, macro, and nano structural characteristics designed to promote the fusion healing process by influencing cellular events related to the production of new bone.

Proven STALIF Design

STALIF M FLX is built upon the simple, elegant design and proven success of the STALIF foundation.

No Profile®; No Supplemental Fixation

The integrated cage and screw system of STALIF M FLX in angles < 20° is cleared for use without supplemental fixation, while the "No Profile" design allows it to nest fully within the confines of the vertebral body—leaving the anatomy unchanged external to the interbody.

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The Lag Effect

Compressive lag fixation ensures biomechanical stability and provides secure graft-endplate contact. Lag screws reduce the vertebral bodies onto the cage creating graft / endplate surface compression to provide the best opportunity for fusion.

Biomechanical Equivalence

The STALIF M FLX device is engineered to achieve equivalent biomechanical performance to anterior plate & cage, as well as posterior pedicle screw and cage, constructs1

1 Cappuccino A, et al. Multi-Directional Flexibility Properties of the STALIF MIDLINE™ Device. October 2011.

Anti Back-Out® Screws

STALIF M FLX screws provide an added layer of security with an Anti Back-Out® (ABO®) titanium split-ring which first compresses and then deploys during insertion.

Large Graft Area

The implant is designed with a large, open, concave graft containment cavity to maximize the volume of bone graft (allograft and/or autograft) material to better promote fusion.

Multiple Heights & Footprints

The STALIF M FLX Interbody system consists of varying heights and footprint options to accommodate individual pathology and anatomical conditions.

Range of Available Sizes:
Widths A/P Depths Anterior Heights Lordosis
33 - 42mm 25.7 - 30.2mm 11 - 17mm 8 - 20 degrees

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The Story of Centinel Spine

Watch this three minute primer on Centinel Spine and its unique and extraordinary place as a catalyst of change in the spine industry—with pioneering technologies and a clinical history that have led to successes ranging from PGA champions to a growing list of surgeon-patients.