Pivotal IDE Study of the BRYAN(R) Cervical Disc Prosthesis in the Treatment of DDD Versus ACDF

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. Read our disclaimer for details. Identifier: NCT00437190
Recruitment Status : Completed
First Posted : February 19, 2007
Last Update Posted : May 13, 2016
Information provided by (Responsible Party):
Medtronic Spinal and Biologics

Brief Summary:
The purpose of this study is to establish the safety and effectiveness of the BRYAN(R) Cervical Disc Prosthesis in treating single-level degenerative disc disease of the cervical spine.

Condition or disease Intervention/treatment Phase
Radiculopathy Myelopathy Cervical Degenerative Disc Disease Device: ATLANTIS™ Cervical Plate System and allograft Device: BRYAN Cervical Disc Prosthesis Not Applicable

Detailed Description:
Bryan(R) Cervical Disc Prosthesis is indicated in skeletally mature patients for reconstruction of the disc from C3 to C7 following single level discectomy for intractable radiculopathy and/or myelopathy.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 494 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Pivotal IDE Study of the BRYAN(R) Cervical Disc Prosthesis in the Treatment of Degenerative Disc Disease
Study Start Date : June 2003
Actual Primary Completion Date : December 2006
Actual Study Completion Date : May 2016

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Active Comparator: Anterior Cervical Discectomy Fusion Device: ATLANTIS™ Cervical Plate System and allograft
Control treatment is commercially available allograft (without bone matrix paste) used in conjunction with the Medtronic Safamor Danek ATLANTIS™ Cervical Plate System.
Other Names:
  • cervical plate
  • plate
  • fusion
  • cervical fusion

Experimental: BRYAN Cervical Disc Prosthesis
BRYAN Cervical Disc Prosthesis is a cervical intervertebral disc prosthesis designed to provide for motion like the normal cervical functional spinal unit.
Device: BRYAN Cervical Disc Prosthesis
The intent is to treat stable degenerative disc disease by implanting the BRYAN Cervical Disc Prosthesis to provide motion like the normal cervical functional spinal unit.
Other Names:
  • disc
  • cervical disc
  • artificial disc

Primary Outcome Measures :
  1. Improvement in patient pain and ability to function [ Time Frame: 24 months ]
    The self-administered Neck Disability Index patient questionnaire is used to assess patient pain and ability to function. A successful outcome will be declared if: Postoperative Score - Postoperative Score is ≥ 15.

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Ages Eligible for Study:   21 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

The indication studied was degenerative disc disease (DDD) at a single level between C3 and C7 for any combination of disc herniation with radiculopathy, spondylotic radiculopathy, disc herniation with myelopathy, or spondylotic myelopathy.

The following additional inclusion criteria had to be present:

  • At least 6 weeks unsuccessful conservative treatment, except in cases of myelopathy requiring immediate treatment (e.g., acute onset of clinically significant signs);
  • Requirement for surgical treatment demonstrated by CT, myelography and CT, and/or MRI;
  • Skeletally mature (≥ 21 years of age);
  • Preoperative Neck Disability Index score of ≥ 30 and at least one clinical sign associated with level to be treated;
  • Willing to sign informed consent and comply with protocol.

Exclusion Criteria:

Subjects were excluded if they had any of the following:

  • Any of the following at the treated level:

    • Significant cervical anatomical deformity; e.g., ankylosing spondylitis, rheumatoid arthritis, etc.
    • Moderate to advanced spondylosis. Patients who demonstrate advanced degenerative changes. Such advanced changes are characterized by any one or combination of the following: bridging osteophytes, marked reduction or absence of motion, collapse of the intervertebral disc space of greater than 50% of its normal height;
    • Radiographic signs of subluxation greater than 3.5 mm;
    • Angulation of the disc space more than 11 degrees greater than adjacent segments;
    • Significant kyphotic deformity or significant reversal of lordosis;
  • Axial neck pain as the solitary symptom;
  • Previous cervical spine surgery;
  • Metabolic bone disease, such as osteoporosis, defined as a BMD T-score equal to or worse than 2.5. If significant radiolucence is detected, a BMD scan in the spine, wrist, and femoral neck must be obtained.
  • Active systemic infection or infection at the operative site;
  • Known allergy or to titanium, polyurethane, or ethylene oxide residuals;
  • Concomitant conditions requiring steroid treatment;
  • Diabetes mellitus requiring daily insulin management;
  • Extreme obesity, as defined by NIH Clinical Guidelines Body Mass Index;
  • A medical condition that may interfere with the postoperative management program, such as advanced emphysema or Alzheimer's disease;
  • A medical condition that may result in patient death prior to study completion: unstable cardiac disease, active malignancy;
  • Pregnant;
  • Current or recent alcohol and/or drug abuser requiring intervention;
  • Signs of being geographically unstable, such as recent or pending divorce, or high level of job dissatisfaction.

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): NCT00437190

  Hide Study Locations
United States, Arizona
Barrow Neurosurgical Associates
Phoenix, Arizona, United States, 85013
United States, Arkansas
University of Arkansas for Medical Sciences
Little Rock, Arkansas, United States, 72205
United States, California
Silicon Valley Spine Institute
Campbell, California, United States, 95008
Cedars Sinai Medical Center
Los Angeles, California, United States, 90048
Hoag Memorial Hospital
Newport Beach, California, United States, 92663
Bay Area Spine Institute
Walnut Creek, California, United States, 94598
United States, Florida
North Florida Regional Medical Center
Gainesville, Florida, United States, 32605
University of Miami School of Medicine
Miami, Florida, United States, 33136
Tallahassee Neurological Clinic
Tallahassee, Florida, United States, 32308
United States, Georgia
Emory Orthopedics and Spine Center
Atlanta, Georgia, United States, 30329
United States, Illinois
Northwestern University Department of Neurosurgery
Chicago, Illinois, United States, 60611
University of Chicago Hospitals Section of Neurosurgery
Chicago, Illinois, United States, 60637
Chicago Inst. of Neurosurgery and Neuro Research
Chicago, Illinois, United States, 60640
United States, Indiana
Indiana University School of Medicine
Indianapolis, Indiana, United States, 46202
Indiana Spine Group
Indianapolis, Indiana, United States, 46260
United States, Maine
Neurosurgery Associates
Scarborough, Maine, United States, 04074
United States, Maryland
Maryland Brain & Spine
Annapolis, Maryland, United States, 21401
United States, Michigan
Neurosurgery of Kalamazoo
Kalamazoo, Michigan, United States, 49048
Marquette General Brain & Spine Center
Marquette, Michigan, United States, 49855
United States, Minnesota
Cervical Spine Specialists
Edina, Minnesota, United States, 55439
Twin Cities Spine Center
Minneapolis, Minnesota, United States, 55404
United States, Missouri
Columbia Orthopaedic Group
Columbia, Missouri, United States, 65201
Washington University Orthopedics
St. Louis, Missouri, United States, 63110
United States, Nevada
Spine Nevada
Reno, Nevada, United States, 89502
United States, New York
Rochester Brain and Spine Neuro
Rochester, New York, United States, 14623
Upstate Orthopedics
Syracuse, New York, United States, 13029
Crouse Hospital
Syracuse, New York, United States, 13210
United States, North Carolina
Carolina Neurosurgery and Spine Specialists
Charlotte, North Carolina, United States, 28204
Wake Forest University School of Medicine - Dept. of Neurosurgery Medical Center
Winston-Salem, North Carolina, United States, 27157
United States, Ohio
Neurosurgical Network, Inc.
Toledo, Ohio, United States, 43608
United States, Oregon
Kellogg MD Brain & Spine
Portland, Oregon, United States, 97086
Oregon Neurosurgery
Springfield, Oregon, United States, 97477
United States, Pennsylvania
Allegheny General Hospital
Pittsburgh, Pennsylvania, United States, 15212
United States, South Carolina
Southeastern Spine Institute
Mount Pleasant, South Carolina, United States, 29464
United States, Tennessee
Neurosurgical Associates
Nashville, Tennessee, United States, 37203
United States, Texas
NeuroSpine Consultants, PA
Plano, Texas, United States, 75093
United States, Utah
Neurosurgery Associates
Salt Lake City, Utah, United States, 84103
United States, Wisconsin
University of Wisconsin Medical School
Madison, Wisconsin, United States, 53792
Sponsors and Collaborators
Medtronic Spinal and Biologics
Principal Investigator: Rick C Sasso, MD Indiana Spine Group

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Medtronic Spinal and Biologics Identifier: NCT00437190     History of Changes
Other Study ID Numbers: BRYAN(R) Cervical Disc IDE
First Posted: February 19, 2007    Key Record Dates
Last Update Posted: May 13, 2016
Last Verified: May 2016

Keywords provided by Medtronic Spinal and Biologics:
Cervical Disc Replacement
Spondylotic radiculopathy
Spondylotic myelopathy

Additional relevant MeSH terms:
Intervertebral Disc Degeneration
Spinal Cord Diseases
Bone Marrow Diseases
Spinal Diseases
Bone Diseases
Musculoskeletal Diseases
Peripheral Nervous System Diseases
Neuromuscular Diseases
Nervous System Diseases
Central Nervous System Diseases
Hematologic Diseases