About this trial
This study will be a prospective, open-label, multi-center study including 72 patients that will collect additional safety and efficacy data for the Spinal Stabilization Technologies PerQdisc Nucleus Replacement System.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Patient is skeletally mature aged 22-70.
Patient has Degenerative Disc Disease (DDD) at one or more levels between L1 and S1 but the discogenic pain must be limited to a single level.
Patient has adequate disc height (6mm) at the level to be treated
Patient has exhausted a minimum of 6 months of conservative treatment for their back (e.g. physical therapy, medications, injections, life style changes, etc).
Disqualifiers
Patient has less than 6 mm of disc height.
Patient has had prior lumbar spine surgery (nucleoplasty at non-index level is considered acceptable).
Patient has had spinal fusion in the lumbar or thoracic intervertebral spaces. Cervical fusion is allowed as long as there are no neurologic deficits in the lower extremities.
Patient has spondyloarthropathy or other spondylolisthesis greater than 2 mm.
Trial design
Single group
Treatments tested in this trial
PerQdisc Nucleus Replacement System
DeviceLumbar spine disc nucleus replacement system. All patients meeting all inclusion criteria and no exclusion criteria will be considered for nucleus replacement surgery following a review by the Medical Advisory Board.
Treatment groups
Trial outcomes
Primary outcomes
Perfromance: ODI
Change in in Oswestry Disability Index (ODI) comparing baseline to follow up visits using a patient-reported outcome tool
Perfromance: ODI
Change in in Oswestry Disability Index (ODI) comparing baseline to follow up visits using a patient-reported outcome tool
Performance: VAS
Change in back pain as measured by the 100 - millimeter Visual Analog Scale (VAS)
Performance: VAS
Change in back pain as measured by the 100 - millimeter Visual Analog Scale (VAS)
Secondary outcomes
Safety: Revision Surgery
Incidence of revision surgery
Safety: Expulsion & Device Failure
Incidence of device expulsion and device failure following surgery based on follow up X-rays and MRI's
Performance: Disc Height
Preservation of intervertebral disc height (in mm) as measured on MRI post-surgery compared to baseline
Performance: RoM
Preservation of range of movement (expressed in degrees) at the index and adjacent levels at baseline compared to follow-up using flexion/extension radiographs
Sponsors and contacts
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