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Gmfm
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Assessment & diagnosis
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Understanding
At what age is the GMFM developmental assessment used for a child?
The Gross Motor Function Measure (GMFM) is used across childhood — most commonly from about 5 months to around 16 years of age. It was developed and validated mainly for children with cerebral palsy, and works because its tasks span the earliest infant movements (lying, rolling, sitting) right up to standing, walking, running and jumping. Rather than fitting one age, it tracks how a child's gross motor skills change over time and how they respond to therapy. It is a clinician-administered observation tool, not a diagnosis.
Read the answer AnswerWhat Is the Gross Motor Function Measure (GMFM)?
The Gross Motor Function Measure (GMFM) is a clinician-administered, observational assessment of large-muscle movement — lying and rolling, sitting, crawling and kneeling, standing, and walking, running and jumping. Used most often with children who have cerebral palsy and other motor conditions, it maps what a child can do today and is especially valued for measuring progress over time. It is play-based and child-friendly, never a test a child can pass or fail.
Read the answerAssessment & diagnosis
How the GMFM Compares with the AbilityScore Assessment
The GMFM and the AbilityScore answer different questions, so they complement each other. The GMFM is a focused, validated tool measuring gross motor skills — sitting, crawling, walking, running — and is widely used to track motor change, especially in cerebral palsy. The AbilityScore is a broader clinician-administered structured assessment across many developmental domains, building a whole-child baseline. Neither is a diagnosis, and both are most valuable when interpreted by a qualified Pinnacle clinician.
Read the answer AnswerShould my child have a GMFM assessment, and what does it involve?
The GMFM is a gentle, clinician-administered measure of big-body movement — rolling, sitting, crawling, standing and walking — used most often for children with motor conditions like cerebral palsy. It maps current ability and tracks progress over time against your child's own baseline. Whether your child should have one is a clinical decision made with your physiotherapist; it is a measure of movement skill, never a diagnosis.
Read the answer AnswerGMFM: indications, strengths and limits in early childhood
The GMFM is a criterion-referenced, clinician-administered measure of gross motor function indicated for tracking change over time in children with cerebral palsy and related conditions. Its strength is validated sensitivity to change across five motor dimensions; its limits are that it measures quantity not quality, may show floor effects in very young children, and does not capture participation or real-world function. It is an outcome tool, never a diagnosis.
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