Comparison of Artificial Disc Implants in Cervical Disc Arthroplasty

Study Purpose

This study will comprehensively evaluate the outcomes and endpoints of these two different FDA-approved artificial disc implants used to treat cervical spondylotic myelopathy and/or radiculopathy today: Biomet Zimmer Mobi-C and Nuvasive Simplify. Both implants are structurally different with the Nuvasive Simplify implementing a three-piece design with two endplates and a semi-constrained mobile core while the Biomet Zimmer Mobi-C implements an unconstrained three piece design. Subjects will be age-matched and randomly assigned to either implant with informed consent. All subjects will undergo a variety of assessments that evaluate neck disability, quality of life, pain, physiological outcome (radiographic assessments), and neck range-of motion before and after their procedure. One baseline testing will be conducted along with three post-operation visits (three months, six months, and one year) in accordance to standard follow-up procedure. Thus, the duration of participation in the study will be approximately one and a half years.

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

No
Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.


An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.


Searching Both is inclusive of interventional and observational studies.

Observational
Eligible Ages 18 Years - 60 Years
Gender All
More Inclusion & Exclusion Criteria

Inclusion Criteria:

  • - Patient is skeletally mature and between 18 to 60 years of age.
  • - Experiences cervical spondylotic myelopathy and/or radiculopathy typically caused by disc herniation or degenerative disc disease at a single level between C3 to C7.
  • - Is unresponsive to at least six weeks of non-surgical conservative care.
  • - Has the intention of undergoing cervical arthroplasty for their chief complaint.
  • - Signed informed consent form.

Exclusion Criteria:

  • - Patient has had prior cervical spine surgery.
  • - Has more than two diseased levels requiring surgery.
  • - Has a known allergy to a metal alloy or polyethylene.
  • - Is morbidly obese.
  • - Has active local or system infection.
- Has any circumstances or conditions such that their ability to provide informed consent comply with follow-up requirements, or provide self-assessments is compromised (eg: psychiatric disorders, chronic alcohol or substance abuse, etc.)

Trial Details

Trial ID:

This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.

NCT05701059
Phase

Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

University of California, Los Angeles
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

Daniel C Lu, MD, PhDMark T Yamamoto, BS
Principal Investigator Affiliation University of California, Los AngelesUniversity of California, Los Angeles
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Other
Overall Status Recruiting
Countries United States
Conditions

The disease, disorder, syndrome, illness, or injury that is being studied.

Cervical Spondylosis With Myelopathy, Cervical Radiculopathy, Cervical Disc Herniation, Degenerative Disc Disease
Additional Details

In cases where surgery is indicated, treatment for cervical spondylotic myelopathy and/or radiculopathy (typically caused by disc herniation or degenerative disc disease) has traditionally been performed by a procedure known as anterior cervical discectomy and fusion (ACDF) to treat a damaged disc in the neck area of the spine. However, medical advancement in this field has allowed for a new procedure often referred to as cervical arthroplasty that implements artificial disc implantation. These implants mimic the function and structure of discs by cushioning the neck's vertebral bones instead of fusing them and providing flexibility for head movements. The emergence of different artificial disc implants that are structurally and mechanistically different calls for a comparative analysis that evaluates performance across a comprehensive set of patient outcomes. This study will comprehensively evaluate the outcomes and endpoints of these two different FDA-approved artificial disc implants used to treat cervical spondylotic myelopathy and/or radiculopathy today: Biomet Zimmer Mobi-C and Nuvasive Simplify. Both implants are structurally different with the Nuvasive Simplify implementing a three-piece design with two endplates and a semi-constrained mobile core while the Biomet Zimmer Mobi-C implements an unconstrained three piece design. Subjects will be age-matched and randomly assigned to either implant with informed consent. All subjects will undergo a variety of assessments that evaluate neck disability, quality of life, pain, physiological outcome (radiographic assessments), and neck range-of motion before and after their procedure. One baseline testing will be conducted along with three post-operation visits (three months, six months, and one year) in accordance to standard follow-up procedure. Thus, the duration of participation in the study will be approximately one and a half years. This study has significant implications in better assessing the overall efficacy of cervical arthroplasty while providing insight to the differences in outcomes based on the artificial disc implanted. Findings can also contribute to characterizing the advantages and disadvantages of both implants to aid surgeons in making more informed and personalized treatment recommendations according to the needs of the patient.

Arms & Interventions

Arms

: Semi-Constrained Nuvasive Simplify

This group will be undergoing cervical arthroplasty with the Nuvasive Simplify artificial disc implant. The Nuvasive Simplify implements a three-piece design with two endplates and a semi-constrained mobile core.

: Unconstrained Biomet Zimmer Mobi-C

This group will be undergoing cervical arthroplasty with the Biomet Zimmer Mobi-C artificial disc implant. The Biomet Zimmer Mobi-C implements an unconstrained three piece design.

Interventions

Procedure: - Cervical arthroplasty

A joint replacement procedure administered by inserting an artificial disc between the vertebrae to replace a natural spinal disc after it has been removed.

Device: - Semi-Constrained Nuvasive Simplify

This weight-bearing implant consisting of PEEK (polyetheretherketone) endplates and one semi-constrained, fully articulating, mobile zirconia toughened alumina (ZTA) ceramic core will be administered by cervical arthroplasty into the specified single-level cervical region.

Device: - Unconstrained Biomet Zimmer Mobi-C

This unconstrained, three-piece implant will be administered by cervical arthroplasty into the specified single-level cervical region.

Contact a Trial Team

If you are interested in learning more about this trial, find the trial site nearest to your location and contact the site coordinator via email or phone. We also strongly recommend that you consult with your healthcare provider about the trials that may interest you and refer to our terms of service below.

UCLA, Los Angeles, California

Status

Recruiting

Address

UCLA

Los Angeles, California, 90095

Site Contact

Daniel C Lu, MD PhD

[email protected]

310-825-4321