Clinical Trials

Inclusion Criteria:

• Male or female, age 21-80 (inclusive) with at least 3 years of life expectancy.
• The subject has a primary diagnosis of symptomatic lumbar degeneration with or without foraminal or recess stenosis of the lumbar spine at a single level from L1/L2 to L5/S1 confirmed by subject history and radiographic imaging (CT, MRI, X-rays) with no more than a Grade 1 (< 25% translation) spondylolisthesis. Symptomatic lumbar degeneration that may be associated with a co-morbid condition such as:
  • Herniated nucleus pulposus;
  • Scarring/thickening of the ligamentum flavum, annulus fibrosus, or facet joint capsule;
  • Facet joint degeneration/osteophyte formation;
  • Spondylosis (defined by the presence of osteophytes);
  • Disc degeneration and/or annular degeneration; and/or
  • Lumbar stenosis defined by spinal cord or nerve root compression.
• Exhausted conservative treatment (e.g. bed rest, physical therapy, medications, TENS, manipulation, and/or spinal injections) for at least 3 months or has a neurologic emergency.
• Preoperative Oswestry Disability Index score ≥ 40/100 at baseline.
• Psychosocially, mentally and physically able to fully comply with this protocol including adhering to follow-up schedule and requirements and filling out forms
• Signed informed consent.

Exclusion Criteria: 

• More than one vertebral level requiring treatment.
• Previous instrumented surgery (i.e., anterior disc replacement, spinal fusion, interspinous device, etc.) at the index lumbar level or an adjacent level.
• Degenerative or lytic spondylolisthesis greater than Grade 1 (< 25% translation).
• Rotatory scoliosis at the level to be treated.
• Congenital bony and/or spinal cord abnormalities at the level to be treated.
• Subcaudal defect, disrupting the integrity of the pedicle.
• Clinically compromised vertebral bodies at the involved level due to current or past trauma, e.g., by the radiographic appearance of the fracture callus, malunion or nonunion.
• Disrupted anterior longitudinal ligament at the index level.
• Overlying thoracolumbar kyphosis (greater than or equal to 15 degrees) within one level (includes target and adjacent level) of the level to be treated.
• Back pain of unknown etiology without leg pain.
• Severe spondylosis at the level to be treated as characterized by any of the following:
  • Autofusion (solid arthrodesis) determined radiographically (CT);
  • Totally collapsed disc, or;
  • Vertebral body that cannot be mobilized.
• Known allergy to cobalt, chromium, molybdenum, nickel, polyethylene, titanium, or vitamin E.
• Unable to undergo an MRI scan, CT scan or other radiograph assessments.
• Osteopenia: The SCORE/MORES will be utilized to screen if a DEXA scan is indicated. If SCORE/MORES value ≥ 6, then a DEXA scan is required. If DEXA is required, exclusion will be defined as a DEXA bone density measured T score ≤ -1. An existing DEXA is allowed if completed within 6 months of subject screening.
• Has history of any endocrine or metabolic disorder known to affect osteogenesis (e.g., Paget's disease, renal osteodystrophy, Ehler-Danlos syndrome, or osteogenesis imperfecta).
• Insulin-dependent diabetes mellitus.
• Lactating, pregnant or interested in becoming pregnant in the next 3 years; 18. Active infection – systemic or local.
• Any medical condition requiring treatment with any drug known to potentially interfere with bone/soft tissue healing or receiving radiation therapy that is expected to continue for the duration of the study.
• Body Mass Index > 40.
• Recurrent history of deep vein thrombosis, symptoms of arterial insufficiency, or thromboembolic disease.
• Systemic disease including Lupus disease, Reiter’s disease, Rheumatoid disease, AIDS, HIV, hepatitis or autoimmune disease that requires immunosuppressive therapy, including biologics, for systemic inflammation.
• Spinal tumor.
• Active malignancy: A patient with a history of any invasive malignancy (except non-melanoma skin cancer), unless he/she has been treated with curative intent and there have been no clinical signs or symptoms of the malignancy for at least 5 years.
• Any degenerative muscular or neurological condition that would interfere with evaluation of outcomes, including but not limited to Parkinson’s disease, amyotrophic lateral sclerosis (ALS), or multiple sclerosis.
• Has chronic or acute renal and/or hepatic impairment and/or failure or prior history of renal and/or hepatic parenchymal disease.
• Has a Waddell Signs of Inorganic Behavior score of 3 or greater.
• In the opinion of the investigator, the subject has a behavioral, cognitive, social or medical problem that may interfere with the assessment of the safety or effectiveness of the device.
• Current or recent history of chemical/alcohol abuse or dependency using standard medical definition of DSM-5 code.
• Currently smoking or using tobacco products, including e-cigarette products (e.g., vaping) (Use within 30 days of screening date is considered ‘current’).
• Currently pursuing or in active spinal litigation for medical negligence, or trauma, or workers compensation.
• Is a prisoner, incarcerated, or has been coerced to participate in the study that could impact the validity of results.
• Is currently participating in an investigational therapy (device and/or pharmaceutical) within 30 days prior to entering the study or such treatment is planned during the 24 months following enrollment into the study.

Note: Other protocol defined Inclusion/Exclusion Criteria may apply.

Eligibility last updated 10/3/23. Questions regarding updates should be directed to the study team contact.