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Hospital-Based Cluster Trial: Magnetically Controlled Growing Rods Using Distraction Intervals

Hospital-Based Cluster Stratified Randomization Control Trial: Determination of Best Magnetically Controlled Growing Rods Implementation Strategy Using Distraction Intervals

Status
Active, not recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04058561
Acronym
MCGR
Enrollment
210
Registered
2019-08-15
Start date
2019-11-01
Completion date
2027-12-31
Last updated
2024-10-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Early-Onset Scoliosis Deformity of Spine

Keywords

Spinal deformity, early onset scoliosis

Brief summary

A hospital-based cluster stratified randomization control study will be conducted to investigate spinal growth in Early Onset Scoliosis patients between 5 and 9 years of age. Patients must have a major coronal curve measuring over 50 degrees and be undergoing Magnetically Controlled Growing Rod treatment. We will be studying 6-week lengthening intervals compared to 16-week lengthening intervals on spinal growth within 3 years.

Detailed description

The Magnetically Controlled Growing Rod (MCGR) system consists of growing rods similarly implanted as with traditional approaches, but with subsequent noninvasive distractions. The implanted growing rods are magnetically controlled and adjusted outside the body using an external remote controller (ERC) following initial surgical insertion. No incision or anesthesia are used for rod lengthening procedures and they are performed by the surgeon in an outpatient or office setting. The purpose of this study is to determine the effect of a 6-week lengthening interval compared to a 16-week lengthening interval on spinal growth in Early Onset Scoliosis patients between 5 and 9 years of age with a major coronal curve over 50 degrees undergoing MCGR treatment within 3 years.

Interventions

DEVICEMAGEC® Spinal Bracing And Distraction System

The magnetically controlled growth rod (MCGR) system is a remotely distractible, magnetically controlled growing rod. The remote capabilities allow for less invasive and less time-consuming outpatient distraction visits, which solves many of the problems facing current growing rod technologies. The MCGR system allows for more frequent lengthenings, and the implanted growing rods can be lengthened more often, which allows MCGR to better approximate normal spine growth compared to Traditional Growing Rods.

Sponsors

Columbia University
CollaboratorOTHER
Pediatric Spine Foundation
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)

Masking description

Radiographs will be uploaded by each site to the coordinating team and will not have access to the information on exposure arms.

Intervention model description

Sites will be randomized into two arms of lengthening intervals: 6 weeks (+/- 2 weeks) or 16 weeks (+/- 2 weeks).

Eligibility

Sex/Gender
ALL
Age
5 Years to 9 Years
Healthy volunteers
No

Inclusion criteria

* All patients with diagnosis of Early Onset Scoliosis (scoliosis before age 10) * Between 5 and 9 years of age (5.0 to 9.9 years) * Major curve greater than 50 degrees at time of index surgery * Dual-rod Magnetically Controlled Growing Rod implantation only * Spine or rib-based constructs * Pre-operative and intra-operative halo gravity traction is allowed

Exclusion criteria

* Patients with previous spine surgery, including other growth friendly techniques * Patients who cannot abide by the study requirements due to geographical or other similar constraints

Design outcomes

Primary

MeasureTime frameDescription
Spinal growth3 yearsT1-S1 growth

Secondary

MeasureTime frameDescription
Complications3 yearsWound related, implant related, intraoperative complications, pseudoarthrosis, neurologic injury/impairment, pulmonary, pain, non-surgical, other
Curve correction3 yearsChange in magnitude of coronal spinal curvature from pre-op to post-op at 3 years
Health related quality of life: questionnaire3 yearsEarly onset scoliosis 24 item questionnaire; This is a patient reported outcome measure for quality of life, parental/financial burden, and satisfaction (4 main domains). There are 11 sub-domains: General health, pain/discomfort, pulmonary function, transfer, physical function, daily living, fatigue/energy level, emotion, parental impact, financial impact, and satisfaction. Within satisfaction, there is child and parent satisfaction. The raw score for each item is from 1-5. This can be turned into scale scores of 0-100. The higher values represent a better outcome. Average sub-domain scores as well as domain scores can be calculated.
Burden of care3 yearsEarly onset scoliosis 24 item questionnaire;This is a patient reported outcome measure for quality of life, parental/financial burden, and satisfaction (4 main domains). There are 11 sub-domains: General health, pain/discomfort, pulmonary function, transfer, physical function, daily living, fatigue/energy level, emotion, parental impact, financial impact, and satisfaction. Within satisfaction, there is child and parent satisfaction. The raw score for each item is from 1-5. This can be turned into scale scores of 0-100. The higher values represent a better outcome. Average sub-domain scores as well as domain scores can be calculated.

Countries

Canada, Finland, Hong Kong, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026