- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01792609
Min Implants Max Outcomes Clinical Trial (MIMOCT)
Minimize Implants Maximize Outcomes (MIMO) Clinical Trial
Objectives Primary objective: Determine if there is a clinically significant difference in percent Cobb curve correction in a low- vs. high-implant density cohort through a prospective randomized controlled trial.
Design and Outcomes Randomized clinical trial of equivalence to test the efficacy and safety of low vs. high implant density instrumentation for spine deformity surgery in AIS patients with Lenke IA curve patterns.
Interventions and Duration Intervention: low-implant density group or high-implant density group. Duration: 2 years. Sample Size and Population Target population: 10 to 17 years old with AIS who will undergo instrumented spinal fusion. Sample size needed (power = 90%) is 174 subjects with 87 in each group.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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Quebec
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Montreal, Quebec, Canada, H3T1C5
- Centre Hospitalier Universitaire Sainte-Justine
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-
-
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Colorado
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Aurora, Colorado, United States, 80045
- Children's Hospital Colorado
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Delaware
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Wilmington, Delaware, United States, 19803
- Nemours/ Alfred I. duPont Hospital for Children
-
-
District of Columbia
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Washington, District of Columbia, United States, 20010-2916
- Children's Research Institute
-
-
Florida
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Gainesville, Florida, United States, 32611
- University of Florida
-
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Georgia
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Atlanta, Georgia, United States, 30329
- Emory University
-
-
Iowa
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Iowa City, Iowa, United States, 52242
- University of Iowa
-
-
Kentucky
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Louisville, Kentucky, United States, 40207
- Norton Leatherman Spine Center
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-
Maryland
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Baltimore, Maryland, United States, 21205
- Johns Hopkins University
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Minnesota
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Minneapolis, Minnesota, United States, 55454
- University of Minnesota
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Rochester, Minnesota, United States, 55905
- Mayo Clinic
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Missouri
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Saint Louis, Missouri, United States, 63110
- The Washington University in St. Louis
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New York
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Rochester, New York, United States, 14618
- University of Rochester
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Texas
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Dallas, Texas, United States, 75219
- Texas Scottish Rite Hospital for Children
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Patients aged ≥10 and ≤ 18 years
- Male or Female
- Diagnosis of idiopathic scoliosis for which surgery is recommended to prevent the curvature or to correct trunk disfigurement Lenke 1A curve pattern
- Curve cobb of 45° to 65°
- T5-T12 kyphosis measuring 0° to 40°
- Spina bifida Oculta is permitted
- Spondylolisthesis and Spondylolysis are permitted, as long as non- operative
Exclusion Criteria:
- Prior spinal surgery
- MRI abnormalities (including >4mm of Syrinx and/or Chiari malformation)
- Neuromuscular or other serious co-morbidities
- Thoracogenic or cardiogenic scoliosis
- Associated syndrome or developmental delay
- Unable or unwilling to firmly commit to returning for required follow-up
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Maximum Number of Screws
Once enrolled and consented, patients with Lenke 1A curves will be randomized to a high- or low-density screw cohort.
The high-density pattern will be designated as ≥ 1.8 implants per level fused.
The low density pattern will be ≤ 1.4 screws per level fused.
At least 75% of the implants must be pedicle screws for both cohorts.
|
The tools used for this arm of study are FDA approved with section 510 (k) K122433.
These screws are regularly used in all procedures pertaining to Cobb angle correction surgeries outside of the context of this study.
Other Names:
|
Active Comparator: Minimum Number of Screws
Once enrolled and consented, patients with Lenke 1A curves will be randomized to a high- or low-density screw cohort.
The high-density pattern will be designated as ≥ 1.8 implants per level fused.
The low density pattern will be ≤ 1.4 screws per level fused.
At least 75% of the implants must be pedicle screws for both cohorts.
|
The tools used for this arm of study are FDA approved with section 510 (k) K122433.
These screws are regularly used in all procedures pertaining to Cobb angle correction surgeries outside of the context of this study.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in Cobb Angle
Time Frame: pre-surgery ranging 1 year to 1 month and peri surgery at about 3-months, 1-year, and 2-year postoperative
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Radiographic, surgical, and patient-reported data will be gathered and analyzed to observe changes between time points.
All radiographs will be taken with 3D analysis capability, either with a calibration belt using standard radiograph techniques or with an EOS imaging system.
This will allow for additional detailed correction measures, such as change in spinal rotation (orientation of the planes of maximum curvature) and detailed coronal, sagittal and transverse plane measures.
Bending films will be taken according to institutional protocol.
The SRS-30, SAQ, and EQ5D will be collected at all clinical visits.
Study questions will be aligned as much as possible with other prospective scoliosis protocols so as to minimize patient and surgeon response burden.
The study protocol requires no additional visits or radiographs beyond standard of care.
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pre-surgery ranging 1 year to 1 month and peri surgery at about 3-months, 1-year, and 2-year postoperative
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Blood Loss
Time Frame: During surgery, 1 time occurence
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Blood loss amount that occured during the surgical procedure.
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During surgery, 1 time occurence
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Operative Time
Time Frame: 1 time measurement, occurs at surgery
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Length of time required to complete surgical procedure in either arm of the study (highest number or lowest number of screws).
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1 time measurement, occurs at surgery
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3D parameter correction
Time Frame: collected during surgical procedure
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Surgeon reported measure of screw manipulation during the surgery.
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collected during surgical procedure
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: David W Polly, MD, University of Minnesota
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 1208M18202
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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