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Performance of the Hedrocel(R) Cervical Fusion Device

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Zimmer Biomet

Status and phase

Completed
Phase 3

Conditions

Symptomatic Cervical Disc Disease

Treatments

Device: Anterior Cervical Discectomy and Fusion

Study type

Interventional

Funder types

Industry

Identifiers

NCT00758758
IC 003-99

Details and patient eligibility

About

The objective of this clinical investigation is to compare patients treated with Anterior Cervical Discectomy and Fusion (ACDF) using the Hedrocel Cervical Fusion Device, with a concurrent, randomized, control group receiving autologous iliac crest bone graft or allograft and test the hypothesis that ACDF with Hedrocel is non-inferior to ACDF with allograft or autologous bone graft.

Full description

The objective of this clinical investigation is to compare patients treated with Anterior Cervical Discectomy and Fusion (ACDF) using the Hedrocel Cervical Fusion Device, with a concurrent, randomized, control group receiving autologous iliac crest bone graft. Success criteria include radiographic evidence of fusion, and improvement in pain, function and overall quality of life. If shown to be successful, the use of the Hedrocel Cervical Fusion Device would eliminate complications associated with harvesting autologous bone graft and provide an alternative for those who are unable to provide autologous bone graft from the iliac crest.

Enrollment

231 patients

Sex

All

Ages

18 to 70 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • The patient qualifies for ACDF based upon physical examination and medical history. The patient has single or two adjacent levels(s) symptomatic cervical disc disease (including disc herniation and/or spondylosis) from the C3-C4 disc to the C7-T1 disc with associated radiculopathy and/or myelopathy due to nerve root and/or spinal cord compression due to herniated nucleus pulposus or osteophyte formation on the posterior vertebral endplates. Patients who are candidates for surgery based on radicular symptoms must have at least one month of conservative treatment prior to inclusion in the study.
  • The patient has no history of previous anterior cervical fusion surgery at the involved levels.
  • The patient has no history of previous cervical fusion surgery at the adjacent levels.
  • The patient is willing and able to provide written informed consent.
  • The patient is likely to complete the required follow-up.

Exclusion criteria

  • The patient is mentally compromised (e.g., under treatment for a psychiatric disorder or has senile dementia or Alzheimer's disease), or has evidence of alcohol or other substance abuse for the previous 12 months.
  • The patient has a neuromuscular disorder that would engender unacceptable risk of instability, implant fixation failure, or complications in postoperative care.
  • The patient has a diagnosed systemic disease that requires the chronic administration of nonsteroidal anti-inflammatory and steroidal drugs.
  • The patient has osteopenia to a degree that would contraindicate spinal instrumentation (borderline osteoporosis).
  • The patient has osteoporosis to a degree that would contraindicate spinal instrumentation.
  • The patient is unable or unwilling to attend postoperative follow-up visits.
  • The patient has received an investigational drug within the previous six months or an investigational device within the previous 12 months.
  • The patient has a spinal condition other than Cervical DDD based upon physical examination and medical history.
  • The patient has an infection site distant from the involved levels that may spread to the involved levels hematogenously.
  • The patient has insufficient bone stock to fix the component.
  • The patient has a known sensitivity to metallic implants.
  • The patient is a prisoner.
  • The patient has a Body Mass Index (BMI) greater than or equal to 40.

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Single Blind

231 participants in 8 patient groups

Experimental Arm 1
Experimental group
Description:
Hedrocel 1 level - No plate
Treatment:
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion
Experimental Arm 2
Experimental group
Description:
Hedrocel 1 level with plate
Treatment:
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion
Experimental Arm 3
Experimental group
Description:
Hedrocel 2 levels with plate
Treatment:
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion
Control Arm 1
Active Comparator group
Description:
Autograft alone - Illiac crest
Treatment:
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion
Control Arm 2
Active Comparator group
Description:
Autograft 1 level with plate
Treatment:
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion
Control Arm 3
Active Comparator group
Description:
Allograft 1 level with plate
Treatment:
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion
Control Arm 4
Active Comparator group
Description:
Autograft 2 levels with plate
Treatment:
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion
Control Arm 5
Active Comparator group
Description:
Allograft 2 levels with plate
Treatment:
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion
Device: Anterior Cervical Discectomy and Fusion

Trial contacts and locations

13

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Data sourced from clinicaltrials.gov

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