A Novel Treatment
for Posterior Fixation

Preserves

Karma® leaves the natural facet joint intact helping to protect the adjacent level.

Secures

Karma anchors around dense cortical bone for secure fixation.

Fuses

Compress the facets and stabilizes the decompressed spinal segment.

Maximizes

Karma is a non-metal, low-profile device for patient satisfaction.

A New Treatment for Posterior Fixation

Stabilization by Subtraction

Traditional fixation does achieve clinical goals but not without unintended consequence.

  • Rigid fixation can lead to:
    • Stiffness of the instrumented segments1
    • Stress concentration of implants1
    • Stress shielding of interbody space
    • Adjacent segment disease and hardware related discomfort may occur2
  • Fixation and stability in patients with poor bone quality can be challenging
  • Screws loosening rates are >60% in osteoporotic bone3
  • Mal-positioning of screws can lead to neurological damage and reoperations
Overwatch MIS Traditional Spine Fixation_Spinal Elements
Pierce Nunley MD bio pic

Pierce Nunley M.D., Shreveport, LA

 

“Karma is not just another iteration of a procedure or device. This is innovation in the true sense of the word — it is disruptive and improves the lives of our patients.”

A New Treatment for Posterior Fixation

Fixation with Anatomical Preservation

Karma can be used to achieve the clinical goals of traditional fixation without the unintended consequences.

  • Karma is a novel metal-free posterior fixation system
  • Procedures are reproducible and straightforward
  • Patient-centric implant
    • Metal-free with minimal radiologic artifact
    • Preserves the native posterior anatomy
    • Minimal implant density
    • Physiologically designed – positioned close to native IAR
Karma_Zip-Tie_Product Image_Spinal Elements
Brian Anderson-MD-MHA-bio-pic

Brian Anderson, M.D., MHA, Lehi, UT

“The Karma fixation system represents a significant advancement in the treatment of degenerative spondylolisthesis and stenosis…”

“…offering a less invasive, yet highly effective alternative to traditional fixation methods.
Its innovative approach not only reduces surgical time but also minimizes the risk associated with extensive tissue disruption, making it a preferable option for patients.”

Fixation
Karma Mean Bone Density2_Spinal Elements

Strong and Stable Cortical Fixation

  • Lumbar cortical density and thickness are greater in the posterior elements4
  • Cortical fixation can be a reliable alternative to patients with poor bone quality
  • Karma utilizes anatomy with the highest Bone Mineral Density
  • Unlike pedicle screws Karma does not use the vertebral body which has the least Bone Mineral Density
Terrence Crowder MD bio pic

Terrence Crowder M.D., Gilbert, AZ

“Those with severe leg pain (neurogenic claudication or radiculopathy) and degenerative spondylolisthesis are ideal for this device. It’s fantastic that…”

“…you can do this surgery on an outpatient basis, meaning less blood loss, a smaller incision, and patients can leave the same day. Because this is a less disruptive overall, even diabetic and/or obese patients, as well as those with COPD, can have a laminectomy with Karma. In our efforts to ‘do no harm,’ we should consider not putting an older person through a larger-than-necessary surgery.”

Want to learn more about the Karma® system contact us.

  1. Liu et al. BMC Musculoskeletal Disorders (2018) 19:231 https://doi.org/10.1186/s12891-018-2132-5.
  2. Hsieh et al. BMC Musculoskeletal Disorders (2020) 21:100 https://doi.org/10.1186/s12891-020-3111-1.
  3. Kafchitsas et al. The impact of surgical fixation technique on pedicle screw anchorage; SENSE Presentation June 2022 Literature Review 43 full papers Reviewed.
  4. Pedicle Screws Challenged: Lumbar Cortical Density and Thickness are Greater in the Posterior Elements Than in the Pedicles. Khalid Odeh, MD, Alexander Rosinski, MS, Jeremi Leasure, MSE, and Dimitriy Kondrashov MD. Global Spine Journal (AO spine) 1-10 2019.