AI learns to spot the two cues that define cerebral palsy motor levels
NCT ID NCT07824531
First seen Sep 17, 2026 · Last updated Sep 18, 2026 · Updated 1 time
Summary
The GMFCS sorts children with cerebral palsy into five levels of gross motor function, largely based on two visible things: whether an adult physically helps the child move, and whether the child bears weight on an external object like a walker or furniture. Scoring these cues takes an experienced clinician and is hardest between ages 2 and 6. This two-center study films 26 children with cerebral palsy performing everyday movements from multiple camera angles, then asks whether a vision-language AI model can detect those two cues from the video frames. The model answers only two yes-or-no questions per attempt, and a fixed rule turns those answers into a call on whether the movement was unaided. Researchers compare the model's calls with a human annotator's blind records. The study does not assign GMFCS levels; it tests whether the observations the GMFCS relies on can be read reliably from video.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- a vision-language artificial intelligence model that reads movement videos
- What this could lead to
- If it works, the model could give clinicians a second set of eyes for scoring gross motor function in young children with cerebral palsy, where assessment is hardest.
- What could go wrong
- This is a small feasibility study of 26 children at two hospitals, so the model may not perform as well across different settings, camera setups, or children. It does not assign GMFCS levels and is not meant to replace a clinician.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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26 people
The number who actually took part.
- Started
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May 2025
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Children with cerebral palsy aged 2 to 6 years under the care of the department of physical and rehabilitation medicine at Samsung Medical Center or Asan Medical Center, each with a GMFCS level assigned by the treating clinician. All five GMFCS levels are represented. Children were enrolled as they attended, without random selection.
- Ages
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2 to 6 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Clinical diagnosis of cerebral palsy * Aged 2 to 6 years at the time of video recording * Under the care of the department of physical and rehabilitation medicine at Samsung Medical Center or Asan Medical Center * A GMFCS level assigned by the treating clinician * Written informed consent from a parent or legal guardian for video recording Exclusion Criteria: * Consent for video recording is not given * GMFCS level cannot be clearly assessed * The child or the parent or legal guardian declines to take part in the study Withdrawal Criteria: * The child or the parent or legal guardian requests withdrawal during the study * The collected video is not of adequate quality for analysis * The participant's health status changes substantially during the study period
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Asan Medical Center
Seoul, 05505, South Korea
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Samsung Medical Center
Seoul, 06351, South Korea
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Other studies related to the condition(s) this trial covers.
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