Plantar response profile of high-risk infants at one year of life

D I Zafeiriou1, I G Tsikoulas, G M Kremenopoulos

  • 1First Pediatric Clinic, Aristotle University of Thessaloniki, Greece. jeff@med.auth.gr

Insights

The extensor plantar response in infants can predict cerebral palsy. This reflex, observed early, aids in the timely diagnosis of spastic cerebral palsy, crucial for intervention.

Area of Science:

  • Neuroscience
  • Developmental Pediatrics
  • Clinical Neurology

Background:

  • The plantar reflex is a key indicator of neurological development in infants.
  • Understanding its evolution is vital for identifying neurodevelopmental abnormalities early.
  • Previous research has not fully clarified the plantar reflex profile in various infant neurodevelopmental categories.

Purpose of the Study:

  • To prospectively examine the plantar reflex profile in high-risk infants at 1 year of age.
  • To correlate plantar responses with neurodevelopmental outcomes, including cerebral palsy and developmental retardation.
  • To assess the diagnostic utility of the plantar response for early detection of spastic cerebral palsy.

Main Methods:

  • Prospective examination of plantar responses in 204 high-risk infants.
  • Follow-up evaluations at 3 years of age to categorize neurodevelopmental outcomes.
  • Analysis of plantar response patterns (extensor vs. flexor, combined extensor response) in relation to diagnoses.

Main Results:

  • Neurologically normal infants showed an extensor plantar response (82.3%) at 1 month, transitioning to flexor by 9-11 months (68.5%-86.3%).
  • A combined extensor plantar response was observed in 42.9% of infants with spastic cerebral palsy as early as the first month.
  • Spastic quadriplegia and hemiplegia were more frequently associated with combined extensor responses than diplegia.

Conclusions:

  • The combined extensor plantar response is a reliable prognostic indicator for spastic cerebral palsy.
  • This reflex can facilitate earlier diagnosis of spastic cerebral palsy, even within the first month of life.
  • Early identification through plantar reflex assessment supports timely therapeutic interventions.

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