Try the modernized beta website. Learn more about the modernization effort.
Working… Menu

Study of Posterior Cervical Stabilization System (PCSS) as Part of Circumferential Fusion to Treat Multilevel DDD (FUSE)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. Identifier: NCT04229017
Recruitment Status : Recruiting
First Posted : January 14, 2020
Last Update Posted : April 19, 2022
Information provided by (Responsible Party):
Providence Medical Technology, Inc.

Brief Summary:
This study will evaluate the safety and effectiveness of a device called "Posterior Cervical Stabilization System or PCSS" when used along with posterior cervical fusion (PCF) in combination with anterior cervical discectomy and fusion (ACDF) in the treatment of multi-level cervical degenerative disease.

Condition or disease Intervention/treatment Phase
Degenerative Disc Disease Procedure: Anterior Cervical Discectomy and Fusion Device: Posterior Cervical Stabilization System (PCSS) Not Applicable

Detailed Description:

Degenerative disc disease (DDD) is a condition in which people experience pain because of compression on the spinal cord or nerve roots caused by degenerating cervical discs. Discs sit between the bones of the spine to provide cushioning, shock absorption, mobility, and load-bearing. When the discs break down, the space between the bones gets smaller and squeezes on the spinal cord or nerve roots causing radiating pain down the neck, shoulders, or arms.

A surgical approach to address cervical (neck) DDD is to fuse the bones together to prevent further compression. This can be done with or without removing the disc material itself. The most common way to perform a cervical spinal (neck) fusion to address DDD is to come in from the front of the neck, decompress the spine to relieve pain, and fuse the bones together to prevent further pain in a procedure called Anterior Cervical Discectomy and Fusion (ACDF). Another option is to come in from the back of the neck in a procedure called Posterior Cervical Fusion (PCF). Sometimes these procedures are combined to provide further decompression and stability in the bones of the neck to promote fusion leading to quicker pain relief and return to function.

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 330 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description: prospective, randomized, controlled multi-center trial
Masking: Single (Participant)
Masking Description: Patients will be randomly assigned to either the treatment or control arms at 1:1 ratio.
Primary Purpose: Treatment
Official Title: Safety and Effectiveness of Posterior Cervical Stabilization System (PCSS) as an Adjunct to Posterior Cervical Fusion, When Used in Combination With ACDF in Treatment of Multi-level Cervical Degenerative Disease
Actual Study Start Date : March 18, 2020
Estimated Primary Completion Date : October 2023
Estimated Study Completion Date : December 2023

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Active Comparator: Anterior Cervical Discectomy and Fusion (ACDF)
ACDF is a a standard of care procedure that is performed using standard instruments and completed with an allograft interbody implant and anterior plate. The plate is intended to stabilize the treated levels until fusion occurs.
Procedure: Anterior Cervical Discectomy and Fusion
Anterior Cervical Decompression and Fusion (ACDF) is a standard of care procedure that is performed using standard instruments and completed with an allograft interbody implant and anterior plate.
Other Name: ACDF

Experimental: Circumferential Cervical Fusion (CCF)
Circumferential Cervical Fusion (CCF) is a combination of ACDF and Posterior Cervical Fusion (PCF) procedures. The PCF is completed with Posterior Cervical Stabilization System (PCSS).
Device: Posterior Cervical Stabilization System (PCSS)
Posterior Cervical Stabilization System (PCSS) is non-segmental instrumentation with integrated screw fixation intended to provide immobilization and stabilization of spinal segments. PCSS achieves bilateral facet fixation by spanning the interspace at each level with points of fixation at each end of the construct.

Primary Outcome Measures :
  1. Superiority in Fusion Success in CCF (treatment) compared to ACDF (control) [ Time Frame: 12 months ]
    An individual subject is considered a fusion success if there is evidence of bridging trabecular bone across endplates and < 2° total angular motion

Secondary Outcome Measures :
  1. Non-inferiority Composite Safety Success in CCF (treatment) compared to ACDF (control) [ Time Frame: 24 months ]

    An individual subject is considered a success if all of the following safety criteria are met:

    1. Fusion success - as defined by evidence of bridging trabecular bone across endplates and < 2° total angular motion
    2. Improvement in Neck Disability Index (NDI)
    3. Improvement in Neurological function
    4. Absence of secondary surgical interventions (SSI)

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   18 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Age 18-80 years (Skeletally Mature)
  2. Indicated for ACDF treatment of degenerative disc disease (DDD) between and including C3-C7 at 3 contiguous levels
  3. NDI Score of ≥15/50
  4. Unresponsive to non-operative, conservative treatment (rest, heat, electrotherapy, physical therapy, chiropractic care and/or analgesics)
  5. Reported to be medically cleared for surgery
  6. Physically and mentally able and willing to comply with the Protocol, including the ability to read and complete required forms and willing and able to adhere to the scheduled follow-up visits and requirements of the Protocol.
  7. Written informed consent provided by subject

Exclusion Criteria:

  1. Body Mass Index (BMI) greater than 40 kg/m2
  2. Active systemic infection or infection at the operative site
  3. History of or anticipated treatment for active systemic infection, including HIV or Hepatitis C
  4. Previous trauma to the C3 to C7 levels resulting in significant bony or disco- ligamentous cervical spine injury that may prevent device placements
  5. A prior spine surgery or pseudoarthrosis at the operative levels
  6. Axial neck pain in the absence of other symptoms of radiculopathy or myeloradiculopathy justifying the need for surgical intervention
  7. Symptomatic DDD or significant cervical spondylosis at more than three levels
  8. Diagnosis of spondylolisthesis, grade >2
  9. Overt (Segmental) instability measured as a movement on dynamic flex/ext x-rays >3.5 mm
  10. Congenital bony and/or spinal cord abnormalities that affect spinal stability
  11. Diagnosis of Paget's disease, osteomalacia or any other metabolic bone disease other than osteoporosis
  12. Osteoporosis, defined as either the SCORE or MORES ≥ 6 and a DEXA bone density measured T-score of ≤ -2.5
  13. Active malignancy or a history of any invasive malignancy (except non-melanoma skin cancer), unless treated with curative intent and without clinical signs or symptoms of the malignancy for at least five years
  14. Has an uncontrolled seizure disorder
  15. Use of epidural steroids within 14 days prior to surgery
  16. A concomitant condition requiring daily, high-dose oral and/or inhaled steroids
  17. Known allergy to titanium (Ti).
  18. Fixed or permanent neurologic deficit related to the target treatment levels that cannot be improved with surgical decompression
  19. Has, in the Investigator's opinion, any disease or condition that would preclude accurate clinical evaluation (e.g. neuromuscular disorders).
  20. Is pregnant or nursing at time of screening, or with plans to become pregnant within the next three years.
  21. A current or recent history (≤ 1 year prior to screening) of substance abuse (alcoholism and/or narcotic addiction) that required treatment.
  22. Long term use (>6 months) of opioids (max. daily amount=120 mg morphine equivalents).
  23. A mental illness or belongs to a vulnerable population, as determined by the investigator (e.g., prisoner or developmentally disabled), that would compromise ability to provide informed consent or compliance with follow-up requirements.
  24. Any other condition or anatomy (e.g. fused facet) that makes posterior fusion treatment infeasible
  25. Use of any other investigational drug or medical device within the last 30 days prior to surgery.
  26. A pending personal litigation relating to spinal injury (worker's compensation is not exclusionary).
  27. Anticipated or potential relocation greater than 50 miles that may interfere with completion of follow-up examinations.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT04229017

Layout table for location contacts
Contact: Erik Summerside, Ph.D. 920-227-5878
Contact: Victoria Sumners 678-357-2876

Show Show 17 study locations
Sponsors and Collaborators
Providence Medical Technology, Inc.
Layout table for investigator information
Study Director: Victoria Sumners Providence Medical Technology, Inc.
Layout table for additonal information
Responsible Party: Providence Medical Technology, Inc. Identifier: NCT04229017    
Other Study ID Numbers: PMT0003
First Posted: January 14, 2020    Key Record Dates
Last Update Posted: April 19, 2022
Last Verified: April 2022

Layout table for additional information
Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: Yes
Keywords provided by Providence Medical Technology, Inc.:
cervical spine
cervical spine fusion
circumferential cervical fusion
degenerative disease
Additional relevant MeSH terms:
Layout table for MeSH terms
Intervertebral Disc Degeneration
Spinal Diseases
Bone Diseases
Musculoskeletal Diseases