ClinicalTrials.gg
Enrolling by invitationNCT04689854Updated Dec 22, 2025

Cervical Interbody Implant Study

An observational study in Degenerative Disc Disease and Cervical Spinal Instability, sponsored by NuVasive. Enrolling by invitation at 7 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-12-22.

Sponsored by NuVasive (part of Globus Medical) · Observational

From the registry’s dates

  • Primary completion was expected by Dec 2025, 10 months ago, but the record still lists the study as enrolling by invitation.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
150
Ages
18 Years and older
Sex
All
01

Study summary

The primary objective of this study is to evaluate the safety and performance of cervical spine surgery using interbody implants as measured by reported complications, radiographic outcomes, and patient-reported outcomes (PROs).

Read the detailed description

This study is a prospective, uncontrolled, multicenter study to evaluate the safety and performance of select interbody implant devices in patients who undergo interbody fusion surgery of the cervical spine. Consecutive patients at a given site who meet eligibility requirements will be asked to consent to participate in the study. These patients will present with degenerative conditions in the cervical spine that are amenable to surgical treatment and will be screened prior to study enrollment. Once enrolled into the study, subjects will undergo interbody fusion surgery using one of the NuVasive interbody implant groups based on the surgeon's standard of care. At least 150 subjects (a minimum of 75 patients in each implant group) will be enrolled and will be followed for 24 months after the surgery.

02

Conditions studied

  • Degenerative Disc Disease
  • Cervical Spinal Instability
03

In context

Intervertebral Disc Degeneration

462 studies on the registry are indexed under Intervertebral Disc Degeneration; 100 are open to participants now.

This study's planned enrollment of 150 is above the median of 119 across 170 observational studies indexed under Intervertebral Disc Degeneration.

Browse Intervertebral Disc Degeneration studies →

Lead sponsor

NuVasive is the lead sponsor of 38 studies on the registry; 8 are open to participants now.

First submitted before NuVasive became part of Globus Medical.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

The Enrolled Population will include all subjects who meet the criteria for enrollment, specifically, those subjects who:

  • Satisfied the inclusion and exclusion criteria
  • Signed the informed consent
  • Underwent the surgical procedure, as defined in this protocol

Subjects not meeting any of these criteria will not be considered enrolled in the study, and therefore not included in any study population or analysis.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Patients who are ≥18 years of age at the time of consent
  2. Have a planned spine surgery using interbody implants at one or more cervical levels (C2-T1) for degenerative disc disease and/or cervical spinal instability
  3. Using one of the following implants (NuVasive, Inc., San Diego, CA):

    1. Cohere Cervical
    2. Modulus Cervical
  4. With interbody fusion using autograft and/or allograft (i.e., cancellous and/or corticocancellous allograft bone) and NuVasive supplemental internal fixation cleared by the applicable regulatory body for use in the cervical spine
  5. Able to undergo surgery based on physical exam, medical history, and surgeon judgment
  6. Understands the conditions of enrollment, is willing to follow medical advice including postoperative activity restrictions per the surgeon's standard of care, and is willing to sign an form to participate in the study

Exclusion criteria

Exclusion Criteria:

  1. Use of any bone graft that is not cleared by the applicable regulatory body for use within interbody implants. Examples of these include:

    1. Bone morphogenic protein (BMP) (i.e., Infuse (Medtronic))
    2. Synthetic bone graft extenders (e.g., Formagraft (NuVasive), Mastergraft (Medtronic), Vitoss (Stryker), Actifuse (Baxter), nanOss (RTI Surgical), Fibergraft (Prosidyan/Depuy Synthes), and ChronOs (Depuy Synthes))
    3. Demineralized bone matrices (DBM) regulated as medical devices by the FDA (e.g., Grafton Putty/Gel (Medtronic), DBX (MTF/Depuy Synthes), Accell Evo3 (IsoTis), and Propel Putty/Gel (NuVasive))
    4. Peptide enhanced bone graft (e.g., iFactor (Cerapedics))
  2. Previous cervical fusion surgery at the level(s) to be treated (adjacent level surgery is acceptable; prior decompression is acceptable)
  3. Patient is involved in active litigation relating to the spine (worker's compensation claim is allowed if it is not contested)
  4. Use of bone growth stimulators postoperatively
  5. Active smoking within 6 weeks before surgery
  6. Patient has known sensitivity to the materials implanted
  7. Systemic or local infection (latent or active) or signs of local inflammation
  8. Patient has inadequate bone stock or bone quality, or a physical or medical condition that would prohibit beneficial surgical outcome based on surgeon judgment
  9. Patient is a prisoner
  10. Patient is participating in another clinical study that would confound study data
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
150 participants (estimated)
Patient registry
No

Groups and cohorts

  • Cohere Cervical
  • Modulus Cervical
06

What researchers measure

Primary outcomes

  1. Complications of Interbody Implants

    Rate of complications (i.e., safety) attributable to the use of the interbody implants to be studied.

    Time frame: 24 months

  2. Radiographic Fusion Success

    The proportion of subjects with apparent radiographic fusion (i.e., performance) of the index surgical level(s) at 24 months postoperative.

    Time frame: 24 months

Secondary outcomes

  1. Percentage of subjects meeting minimal clinically important difference (MCID) as compared to baseline for neck/arm pain measured by visual analog scale (VAS).

    Neck and arm pain measured using a visual analog scale (VAS) will be assessed to determine the percentage of subjects who meet MCID (2.5 points and 2.5 points respectively) where 0 is "No Pain" and 10 is "Unbearable Pain".

    Time frame: 24 months

  2. Percentage of subjects meeting minimal clinically important difference (MCID) as compared to baseline for disability measured by the neck disability index.

    Disability measured by the neck disability index (NDI) will be assessed to determine the percentage of subjects who meet MCID (7.5 points) where a higher score on the NDI indicates a more severe disability.

    Time frame: 24 months

  3. Percentage of subjects meeting minimal clinically important difference (MCID) as compared to baseline measured by overall physical and mental health from PROMIS-10.

    Overall physical and mental health measured by PROMIS-10 will be assessed to determine the percentage of subjects who meet MCID (5 points). PROMIS-10 scoring uses a T-score metric in which 50 is the mean of a relevant reference population and 10 is the standard deviation (SD) of that population.

    Time frame: 24 months

  4. Percentage of subjects meeting Substantial clinical benefit (SCB) as compared to baseline for disability measured by the neck disability index (NDI).

    Disability measured by the neck disability index (NDI) will be assessed to determine the percentage of subjects who meet SCB (9.5 points) where a higher score on the NDI indicates a more severe disability.

    Time frame: 24 months

  5. Percentage of subject meeting Substantial Clinical Benefit (SCB) as compared to baseline for neck/arm pain measured by visual analog scale (VAS).

    Neck and arm pain measured using a visual analog scale (VAS) will be assessed to determine the percentage of subjects who meet SCB (3.5 points) where 0 is "No Pain" and 10 is "Unbearable Pain"

    Time frame: 24 months

  6. Percentage of subjects meeting Substantial Clinical Benefit (SCB) as compared to baseline for measure by overall physical and mental health from PROMIS-10

    Overall physical and mental health measured by PROMIS-10 will be assess to determine the percentage of subjects how meet SCB (6.8 points). PROMIS-10 scoring uses a T-score metric in which 50 is the mean of the relevant reference population and 10 is the standard deviation (SD) of that population.

    Time frame: 24 months

  7. Rate of complications attributable to the use of any additional NuVasive instruments, implants, or technologies.

    Rate of complications attributable to the use of any additional NuVasive instruments, implants, or technologies.

    Time frame: 24 months

07

Study locations

7 sites
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jul 2020 (actual). Primary completion is estimated for Dec 2025, 65 months after the start.

Of 80 observational studies under Intervertebral Disc Degeneration, half reached primary completion within 61 months of starting (the median), counting those still running; a quarter within 45 and three quarters within 84. This study's planned 65 months is close to that.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 28, 2020
First posted
Dec 30, 2020
StartActual
Jul 7, 2020
Primary completionEst.
Dec 31, 2025
CompletionEst.
Dec 31, 2025
Last update
Dec 22, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 22, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04689854
Lead sponsor
NuVasive
Responsible party
Sponsor
First posted
Dec 30, 2020
Start date
Jul 7, 2020
Primary completion
Dec 31, 2025 (estimated)
Completion
Dec 31, 2025 (estimated)
Last update
Dec 22, 2025

Study contacts

Kyle Malone, MS
study director · Globus Medical

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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No contact was published for this record. The registry link below has the sponsor’s details.

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