3D-Printed Lateral Integrated Interbody™ System with Porous Titanium Scaffold

The First No Profile® MIS lateral Integrated Interbody system with compressive lag screw fixation1, now available in FLX 3D-Printed, Porous Titanium Technology.*

*STALIF L FLX is indicated for use with supplemental fixation

Not Available for Sale in All Markets

Proprietary Design Featuring Unique 3D-Printed Porous Titanium FLX™ Solution

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



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.

Anatomic Design

Engineered to Maximize Opportunities for Fusion

Multiple footprint and lordotic options match patient anatomy for optimal endplate contact to aid in sagittal balance restoration and provide indirect decompression.

Multiple Footprints

Multiple footprints for optimal endplate contact.

  • Lengths of 45, 50 & 55mm
  • Heights of 8, 10, 12, & 14mm
  • Lordosis of 0° & 12°
  • Widths of 18 & 22mm

Bullet Nose

Eases insertion, particularly when osteophytes are present.

Optimized, Open Graft Window to Promote Fusion Throughout

Increases opportunities for fusion through the implant.

  • Large central graft window with concave graft containment cavity
  • No center rail to obstruct fusion mass
  • Proprietary FUSE-THRU™ lattice to enable the potential for ongrowth, in-growth, and thru-growth

Clear Visualization

  • Alignment hole and crisp edges indicate alignment on A/P and lateral images
  • FUSE-THRU™ lattice enables post-operative visualization of fusion mass

Proven STALIF® Technology

A Member of the Revolutionary STALIF® Family

As a STALIF Family product, STALIF L FLX represents the “Gold Standard” in No Profile® Integrated Interbody™ Technology. Based on AO principles of fracture fixation, STALIF promotes compressive lag fixation that ensures biomechanical stability and secure graft-endplate contact in line with Wolff’s Law of bone remodeling.

STALIF® No-Profile® Design

  • Eliminates profile of plate, allowing for optimal load transfer within the vertebral segment
  • Spares tissue with smaller surgical envelope to insert implant and integrated fixation
  • Simplifies surgical technique to implant device

Above: Intraoperative image shown prior to the addition of supplemental fixation; STALIF L FLX is indicated for use with supplemental fixation.

Horizontal Inclination

STALIF L™ screws are angled and biomechanically designed to direct axial forces along the long axis of the screws—significantly reducing bending moments and preventing de-rotation of the screw and / or screw back- out.

Midline Convergence

Centinel’s converging screw design and angles are biomechanically more resistant to screw backout compared to parallel screws. Additionally, midline convergence angles are designed to provide a more secure interbody construct.

Anti Back-Out® Screws

STALIF cancellous lag screws are designed with an Anti Back-Out (ABO®) retention feature—utilizing a titanium split-ring for an added layer of security.

The gold standard in minimally-invasive lateral fixation, STALIF L FLX maximizes opportunities for fusion by providing No-Profile, intradiscal, integrated compressive lag fixation.

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