Transforaminal Lumbar Interbody Fusion

Easy implantation – maximum support

The transforaminal cage offers an anatomically molded design and variable insertion techniques.


PEEK-OPTIMA® is a biocompatible polymer offering a number of benefits in such indications. In its strength it is comparable to cortical bone and due to its excellent MRI compatibility permits artifact-free imaging.

With WOMBAT, we offer a TLIF implant that, by contrast to the classic banana-shaped cages, is positioned diagonally in the intervertebral space. Bilateral support is thereby achieved in spite of the unilateral access - and that with in just one surgical step!

Besides the simple implantation technique, the bone-implant contact area and the filling volume can in addition be maximized by utilization of the entire diagonal diameter of the vertebral body.
The large fenestration in the implant permits the cage to be packed with natural or synthetic bone graft substitute such as Kainos® Inject.
Due to its biconvex design, the implant can be aligned perfectly with the curvature of the vertebral body and so is ideally suited for unilateral, posterior access (TLIF) in the L1-S1 region of the spine.
Combined with an additional posterior instrumentation and toothed endplate, the inserted cage ensures high primary stability and optimal conditions for vertebral body fusion.
Restoration of the intervertebral space can be guaranteed by a large selection of implants that at the same time offer a high degree of intraoperative flexibility. In addition to plane-parallel implants, the
WOMBAT cage is also available with a 6° lordotic angle.

The flattened nose facilitates implantation.

In addition to plane-parallel implants, the WOMBAT Cage is also available with a 6° lordotic angle.

The WOMBAT cage is used in combination with posterior stabilization for spinal segments L1 to S1, in the following indications:

  • Mechanical instability
  • Disc prolapse
  • Spondylolisthesis
  • Degenerative disc diseases
  • Spinal canal stenosis
  • Osteochondrosis

Productspecific advantages

Diagonal implant placement

  • Easy and rapid implantation in a single surgical step
  • No complicated turning of the implant as needed for banana-shaped cages

Flattened implant apex

  • Easier implantation with self-distracting design
  • No removal of the posterior edges of vertebral bodies

Large contact area with the vertebral body

  • Secure implant positioning
  • Reduced risk of subsidence

Biconvex design with or without lordosis

  • Anatomical adaptation in the intervertebral space
  • Optimal restoration of the sagittal alignment

Proven SIGNUS toothed cage design

  • Secure anchoring in the bone owing to high primary stability
  • Reduced risk of implant migration

Smooth lateral surfaces

  • Less preparation required
  • Protection of nerve roots