Developmental Medicine and Child Neurology

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Hypertonia in childhood may arise because of a variable combination of neuronal and non-neuronal factors. Involuntary muscle contraction may be due to spasticity or dystonia, which represent disorders of the spinal reflex arch and of central motor output respectively. Whilst consensus definitions for dystonia have been established, definitions of spasticity vary, highlighting the lack of a single unifying nomenclature in the field of clinical movement science. The term spastic dystonia refers to involuntary tonic muscle contraction in the context of an upper motor neuron (UMN) lesion...

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AIM: To compare transcranial magnetic stimulation (TMS)-derived measures of primary motor cortex (M1) physiology between children with and without Tourette syndrome, and to dimensionally analyze TMS measures with Tourette syndrome-related symptom severity. METHOD: We used a cross-sectional experimental design. Sixty 8- to 12-year-old children participated (30 with Tourette syndrome: three females, mean age 10 years 10 months, standard deviation [SD] 1 year 3 months; 30 typically developing children: seven females, mean age 10 years 7 months, SD 1 year 3 months)...

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Placebo responses are frequently observed in research studies and clinical contexts, yet there is limited knowledge about the placebo effect among children with neurodevelopmental disorders. Here, we review the placebo effect in autism spectrum disorder (ASD). Placebo responses are widely evident in ASD clinical trials and could partly operate via so-called placebo-by-proxy, whereby caregivers or clinicians indirectly shape patient outcomes. Understanding the role of placebo effects in ASD may help discern genuine treatment effects from contextual factors in clinical trials...

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AIM: To examine the impact of parent-led massage on the sleep electroencephalogram (EEG) features of typically developing term-born infants at 4 months. METHOD: Infants recruited at birth were randomized to intervention (routine parent-led massage) and control groups. Infants had a daytime sleep EEG at 4 months and were assessed using the Griffiths Scales of Child Development, Third Edition at 4 and 18 months. Comparative analysis between groups and subgroup analysis between regularly massaged and never-massaged infants were performed...

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AIM: This overview of Cochrane systematic reviews (CSRs) reports on current evidence on the effectiveness of rehabilitation interventions for individuals with cerebral palsy (CP) and the quality of the evidence. METHOD: Following the inclusion criteria defined by the World Health Organization, all CSRs tagged in the Cochrane Rehabilitation database that were relevant for individuals with CP were included. A mapping synthesis was used to group outcomes and comparisons of included CSRs indicating the effect of rehabilitation interventions and the certainty of evidence...

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AIM: To investigate the efficacy of aerobic exercise on the functioning (participation, activities, and body functions and structures) and quality of life (QoL) of children and adolescents with cerebral palsy (CP). METHOD: A systematic review with meta-analysis was performed. A comprehensive search of articles was performed using the electronic databases Embase, PubMed, PEDro, and CINAHL. Methodological quality and certainty of evidence were evaluated with the PEDro and Grading of Recommendations Assessment, Development, and Evaluation (GRADE) scales respectively...

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AIM: To identify subtypes of developmental coordination disorder (DCD) in children. METHOD: Children with DCD diagnosed through comprehensive evaluation at Robert-Debré Children's University Hospital (Paris, France) were consecutively enrolled from February 2017 to March 2020. We performed an unsupervised hierarchical clustering based on principal component analysis using a large set of variables encompassing cognitive, motor, and visuospatial scores (Wechsler Intelligence Scale for Children, Fifth Edition; Developmental Neuropsychological Assessment, Second Edition; Movement Assessment Battery for Children, Second Edition)...

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AIM: To report survival probability of a large cohort of children with cerebral palsy (CP) after spinal fusion. METHOD: All children with CP who had spinal fusion between 1988 and 2018 at the reporting facility were reviewed for survival. Death records of the institutional CP database, institutional electronic medical records, publicly available obituaries, and the National Death Index through the US Centers for Disease Control were searched. Survival probabilities with different surgical eras, comorbidities, ages, and curve severities were compared using Kaplan-Meier curves...