Paeds Vivas · growth-development-and-behaviour
Cerebral palsy early recognition — branching viva
Viva on CP definition, early detection tools, GMFCS/MACS and communication.
On this page & tools
Target exams
Branch A — Definition
Examiner: What is cerebral palsy?
Candidate: A group of permanent disorders of the development of movement and posture attributed to non-progressive disturbances in the developing fetal or infant brain, often with associated impairments such as epilepsy, sensation, cognition and communication difficulties. [2] [3]
Branch B — Early detection
Examiner: This high-risk infant is only four months corrected. Can you talk about CP yet?
Candidate: Yes — I use high-probability language when risk history, movement quality, HINE and imaging converge. I do not wait for independent walking if tools already point strongly to CP. [1] [10] [11]
Branch C — Examination tools
Examiner: Which tools help?
Candidate: Structured neurological examination with HINE in trained settings, General Movements Assessment principles for movement quality, and clinical observation of tone, asymmetry and functional play. Formal GMA needs training. [1] [10] [11]
Branch D — Classification
Examiner: How do you classify?
Candidate: Motor type (spastic, dyskinetic, ataxic, mixed), topography (unilateral versus bilateral patterns), and function with domain systems — GMFCS for gross motor, MACS for hands, and others as relevant. I assign function from real-world performance, not as a quiz for parents. [3] [4] [5] [6]
Branch E — Imaging
Examiner: Must MRI be abnormal?
Candidate: MRI pattern classification supports counselling and research communication, but clinical CP can stand with variable imaging. Unexpected progressive features reopen the differential. [18] [19]
Branch F — Management start
Examiner: Therapy now or later?
Candidate: Start early intervention when probability is high. Evidence supports early motor intervention; investigations and specialist review continue in parallel. [1] [13]
Branch G — Communication
Examiner: Counsel the family.
Candidate: I explain what we see, what high probability means, what we will do this week, and that labels refine over time. I use plain language, check understanding, and avoid both false reassurance and catastrophic certainty. [1]
Examiner traps
- Waiting until walking age despite high-probability tools.
- Collapsing GMFCS with motor type.
- Missing progressive disease red flags.
- Withholding therapy until every test is complete. [1] [4] [19]
References
- [1]Novak I Early, Accurate Diagnosis and Early Intervention in Cerebral Palsy: Advances in Diagnosis and Treatment. JAMA pediatrics, 2017.PMID 28715518
- [2]Bax M Proposed definition and classification of cerebral palsy, April 2005. Developmental medicine and child neurology, 2005.PMID 16108461
- [3]Rosenbaum P A report: the definition and classification of cerebral palsy April 2006. Developmental medicine and child neurology. Supplement, 2007.PMID 17370477
- [4]Palisano R Development and reliability of a system to classify gross motor function in children with cerebral palsy. Developmental medicine and child neurology, 1997.PMID 9183258
- [5]Palisano RJ Content validity of the expanded and revised Gross Motor Function Classification System. Developmental medicine and child neurology, 2008.PMID 18834387
- [6]Eliasson AC The Manual Ability Classification System (MACS) for children with cerebral palsy: scale development and evidence of validity and reliability. Developmental medicine and child neurology, 2006.PMID 16780622
- [10]Romeo DM Hammersmith Infant Neurological Examination in infants born at term: Predicting outcomes other than cerebral palsy. Developmental medicine and child neurology, 2022.PMID 35201619
- [11]Fehlings D The Hammersmith Infant Neurological Exam Scoring Aid supports early detection for infants with high probability of cerebral palsy. Developmental medicine and child neurology, 2024.PMID 38818710
- [13]Morgan C Effectiveness of motor interventions in infants with cerebral palsy: a systematic review. Developmental medicine and child neurology, 2016.PMID 27027732
- [18]Himmelmann K MRI classification system (MRICS) for children with cerebral palsy: development, reliability, and recommendations. Developmental medicine and child neurology, 2017.PMID 27325153
- [19]Smithers-Sheedy H What constitutes cerebral palsy in the twenty-first century? Developmental medicine and child neurology, 2014.PMID 24111874