Typical Cage Contact
InFill Interbody Fusion Systems
Designed for a more complete fill of the biologic void
and greater graft-to-endplate contact.
Because Fusion Is A Contact Sport™
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contact to fill the bologic void
InFilling the Biologic Void Why other fusion systems fall short
by Zach Sowell, President, Pinnacle Spine Group
Eliminating the Performance Gap
Lumbar fusion has become a standard for spinal stabilization.
Techniques and approaches have evolved, but all are predicated
on well-established fusion principles: thorough disc preparation,
proper endplate preparation, and placement of a critical mass of bone
graft in contiguous contact with the vertebral endplates.
Challenge: Graft-to-Endplate Contact
Obtaining a robust fusion—particularly in the lumbar region—can
present many challenges for surgeons. Managing bone graft delivery
and maximizing its efficiency has long been cumbersome for surgeons
as evidenced by the different techniques for using graft and various
advances in biologic materials.
One critical challenge is caused by the disparate nature of the vertebral endplate geometry and the surface geometry of the implant.
The space between the implant and the endplate is defined as the
“biologic void”. Delivering bone graft to the implant in situ optimizes
graft contact with the endplates by maximizing the fill of the disc space,
and eliminates waste and OR time while providing the highest opportunity for achieving a robust fusion.
Solution: InFilling the Biologic Void
Through research and clinical experience with the InFill technique,
it is well understood that a larger area of contact between bone graft
and well-prepared vertebral endplates improves the chances of a
The InFill approach—using a unique integrated system of instrumentation, implant designs and graft delivery system—the surgeon
can safely inject bone graft into the implanted cage to fill the
biologic void and promote optimized graft contact with the endplates.
In addition, by more efficiently filling the biologic void—whether by
InFilling an empty cage or by topping off a pre-packed cage in situ—
many surgeons who use the InFill system require less OR time.
InFill Technique for Spinal Fusion Procedures
We believe that maximizing contact between graft and a well-prepared endplate is the best way to promote robust spinal
fusion. With this in mind, Pinnacle Spine Group pioneered the
unique InFill approach—the first intuitive spinal fusion system
with integrated in situ graft delivery capabilities. InFill is a versatile
system designed to allow greater graft volume to fill the
biologic void and promote optimal graft-to-endplate contact
with best-in-class instrumentation, unique implant designs and
multiple retractor options.
Up to 94% more
to promote greater
* Burak M. Ozgur, MD FAANS, Erin Gleckman, PA-C (2013) InFill® Lateral System: a novel technique for optimizing graft filling and endplate contact in lumbar interbody fusion surgery.
©2017 All rights reserved, Pinnacle Spine Group LLC, 2921 Canton Street, Dallas TX 75226 USA InFill is a registered trademark of Pinnacle Spine Group, LLC.
Cage Area of
Note the biologic void,
the region of non-contact