N/A
N=302
The MiDAS ENCORE Study
Spinal Stenosis, Lumbar Region, With Neurogenic Claudication
Bottom Line
View on ClinicalTrials.gov: NCT02093520 ↗Enrolled (actual)
302
Serious AEs
10.3%
Results posted
Jul 2017
Primary outcome: Primary: Number of Participants Who Achieved a Clinically Significant Improvement in the Oswestry Disability Index at 12 Months — 83; 35 Participants
Study Design & Population
- Study type
- Interventional
- Phase
- N/A
- Interventions
- MILD Procedure (Procedure); Epidural Steroid Injection (Drug)
- Age
- Older Adult · 65+ yrs
- Sex
- All
- Sponsor
- Vertos Medical, Inc.
- Primary completion
- May 2016
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Number of Participants Who Achieved a Clinically Significant Improvement in the Oswestry Disability Index at 12 Months |
83; 35 | — |
| SECONDARY Number of Participants Who Acheived a Clinical Significant Improvement in the Numeric Pain Rating Scale (NPRS) at 12 Months |
82; 35 | — |
| SECONDARY Number of Participants Who Achieved a Clinically Significant Improvement in the Zurich Claudication Questionnaire (ZCQ) at 12 Months |
74; 41; 63; 23; 88; 43 | — |
Summary
Study Objective: To compare patient outcomes following treatment with either the MILD procedure or epidural steroid injections (ESIs) in patients with painful lumbar spinal stenosis exhibiting neurogenic claudication and having verified ligamentum flavum hypertrophy as a contributing factor.
Eligibility Criteria
Inclusion Criteria
- 65 years or older and a Medicare beneficiary.
- Patients experiencing neurogenic claudication symptoms for at least 3 months duration which has failed to respond or poorly responded to physical therapy, home exercise programs, and oral analgesics.
- LSS with neurogenic claudication diagnosed via:
- Symptomatic diagnosis and
- Radiologic evidence of LSS with unilateral or bilateral ligamentum flavum >2.5mm confirmed by pre-op MRI or CT performed within 12 months of baseline visit.
- Patients with comorbid conditions commonly associated with spinal stenosis, such as osteophytes, facet hypertrophy, minor spondylolisthesis, foraminal stenosis, and/or disk protrusion may be included unless the treating physician has determined that the condition is too advanced.
- Available to complete 6 month and one year follow-up visits.
Exclusion Criteria
- ODI Score < 31 (0-100 ODI Scale).
- NPRS Score < 5 (0-10 NPRS Scale).
- Prior surgery at any treatment level.
- History of recent spinal fractures with current related pain symptoms.
- Patients with Grade III or higher spondylolisthesis.
- Motor deficit or disabling back and/or leg pain from causes other than LSS neurogenic claudication (e.g., acute compression fracture, metabolic neuropathy, or vascular claudication symptoms, etc.).
- Unable to walk ≥ 10 feet unaided before being limited by pain. In this context, 'unaided' means without the use of a cane, walker, railing, wall, another person or any other means of walking assistance.
- Patients previously randomized and/or treated in this clinical study.
- Patients that have previously received the MILD procedure.
- ESI during eight weeks prior to study enrollment.
- Epidural lipomatosis (if it is deemed to be a significant contributor of canal narrowing by the physician).
- On (or pending) Workman's Compensation or known to be considering litigation associated with back pain.
Data sourced from ClinicalTrials.gov (NCT02093520). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.