In brief
- A widely cited evidence review in cerebral palsy care, State of the Evidence Traffic Lights 2019, graded 182 interventions using a traffic light system. Dynamic Movement Intervention does not appear in it.
- That is because DMI was introduced in 2021 and the review's literature search was carried out in 2019. DMI was not assessed and rejected. It was not assessed at all.
- Being absent from a review is not the same as being red-lighted in one. In that review, a red light means high-quality evidence that an intervention is ineffective or harmful. There is no such finding against DMI.
- DMI's co-founders say the approach is congruent with several interventions green-lighted in that review, including goal-directed training, strength training, and task-specific training. The authors of a January 2026 critique call that claim misleading.
- No controlled study of DMI has been published. Published outcome reports are limited to a conference abstract on two children and a case report on one child, neither with a comparison group. A randomized trial comparing DMI with the Bobath approach completed in June 2026, and its results are pending.
State of the Evidence Traffic Lights 2019, a widely cited review of cerebral palsy interventions, graded 182 interventions using a traffic light system. Dynamic Movement Intervention does not appear in it. That is because DMI was introduced in 2021 and the review's literature search was carried out in 2019. DMI was not assessed and rejected. It was not assessed at all.
What the evidence reviews are
When a clinician says an intervention is or isn't "evidence-based" for cerebral palsy, they are usually referring to a body of systematic reviews led by Iona Novak and colleagues. The most recent edition of their traffic-light review, State of the Evidence Traffic Lights 2019, was published in Current Neurology and Neuroscience Reports in February 2020.
It reviewed the available evidence from 2012 to 2019, graded it using GRADE and an Evidence Alert Traffic Light System, and combined those findings with an earlier 2013 review. Interventions come out green, yellow, or red: worth doing, uncertain, or don't do it.
Why DMI is not in it
DMI was established in 2021. The review's literature search closed in 2019. There was nothing to assess.
This matters because of how the absence gets read. A parent who searches whether DMI is evidence-based may find these reviews, not find DMI in them, and conclude it was looked at and found wanting. It wasn't. It postdates the review entirely.
An intervention that was assessed and red-lighted has been tested and found not to work. An intervention that is absent has not been tested. Those are different situations and they call for different decisions.
What the reviews do say about DMI's building blocks
DMI is not a wholly novel idea. It evolved from Cuevas Medek Exercises, developed in the early 1970s, and it works by placing a child in positions that demand active postural responses against gravity, with support withdrawn progressively as control improves.
DMI's co-founders argue that the approach is congruent with 17 items in the traffic-light review, including green-lighted interventions such as goal-directed training, strength training, and task-specific training. The authors of the January 2026 critique call that claim misleading. They argue those interventions are grounded in contemporary motor learning principles, such as child-led practice of real-life tasks, that differ fundamentally from the theoretical underpinnings of DMI.
Neither argument is evidence about outcomes. Whether DMI works has to be tested directly, and it has not yet been tested in a controlled study.
What is still unresolved
Two things are true at the same time, and careful sources say both.
No controlled study of DMI has been published. Published outcome reports are limited to a conference abstract describing two children with spinal muscular atrophy and a March 2026 case report describing one girl with Apert syndrome, whose gross motor scores rose over eight months of DMI. Neither had a comparison group, so neither can show whether DMI caused the gains. A critical review in Pediatric Physical Therapy in January 2026 argued that DMI should not be presented to families as an established treatment, and DMI's co-founders published a response.
And a randomized controlled trial comparing DMI with the Bobath approach in children with spastic cerebral palsy completed in June 2026. Its results have not been published. When they are, they will be controlled outcome data, which neither of those papers could offer.
What this means for your decision
If you have been told DMI isn't evidence-based, the accurate version is narrower than it sounds: DMI has not yet been studied in a published trial. It has not been studied and failed.
That is a reasonable basis for caution and a reasonable basis for trying it, depending on your child's situation, what conventional therapy has produced so far, and what you can afford. What it is not is a basis for anyone telling you the question is settled in either direction.
Ask any provider what they expect for your child, over what timeframe, and what would tell them to stop. That question is more useful than the evidence-base question, because it is answerable now.
Questions to ask before booking
Sources
- State of the Evidence Traffic Lights 2019, Current Neurology and Neuroscience Reports: PubMed
- Full text (PMC): PMC
- Where's the Evidence? Pediatric Physical Therapy, January 2026: DOI: 10.1097/PEP.0000000000001261
- NCT07238634: DMI vs Bobath in Spastic Cerebral Palsy: ClinicalTrials.gov
- DMI and "Red Light, Green Light": Finding Common Ground and Paving the Way for the Future, DMI Therapy blog, May 2024: DMI Therapy
- Parent Resources and FAQ, DMI Therapy: DMI Therapy
- Early Motor Development and Rehabilitation Outcomes in Apert Syndrome: Gross Motor Function Measures—Case Report, Pathophysiology, March 2026: PMC
Nothing here is medical advice, and no single study or review should change your child's care on its own. Discuss anything you read here with your child's pediatrician or therapist.