The rise and fall of the plantar response in infancy

To determine when the plantar response becomes reliably flexor in infants, 169 infants underwent serial evaluation from 2 weeks to 12 months of age during routine well-child visits. The plantar response, elicited in a standardized fashion, was extensor in 95.5%, 64.8%, 10.9%, 0.7%, and 0% of the inf...

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Bibliographic Details
Published in:The Journal of pediatrics 1998-10, Vol.133 (4), p.568-570
Main Authors: Gingold, Monique K., Jaynes, Margaret E., Bodensteiner, John B., Romano, Judy T., Hammond, Mary T.
Format: Article
Language:English
Subjects:
Age Factors
Anatomy
Biological and medical sciences
Brain
Feedback (Response)
Foot - physiology
Gestational Age
Humans
Individual Instruction
Infant
Infant, Newborn
Investigative techniques, diagnostic techniques (general aspects)
Medical sciences
Muscle, Skeletal - physiology
Neonates
Nervous system
Neurology
Pathology. Cytology. Biochemistry. Spectrometry. Miscellaneous investigative techniques
Persistence
Reflex - physiology
Spinal Cord - physiology
Statistical Analysis
Young Children
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Summary:To determine when the plantar response becomes reliably flexor in infants, 169 infants underwent serial evaluation from 2 weeks to 12 months of age during routine well-child visits. The plantar response, elicited in a standardized fashion, was extensor in 95.5%, 64.8%, 10.9%, 0.7%, and 0% of the infants at 2, 4, 6, 9, and 12 months, respectively. The plantar response becomes predominately flexor by 6 months of age in normal infants. This maturation of response correlates closely with that of other infantile reflexes. (J Pediatr 1998;133:568-70)
ISSN:0022-3476
1097-6833
DOI:10.1016/S0022-3476(98)70071-X