Prospective follow-up of primitive reflex profiles in high-risk infants: clues to an early diagnosis of cerebral palsy.

To clarify reflex profiles in the first year of life in connection with categories of neurologic abnormality, eight primitive reflexes (i.e., the palmar grasp reflex, the plantar grasp reflex, the Galant response, the asymmetric tonic neck reflex, the suprapubic extensor reflex, the crossed extensor reflex, the Rossolimo reflex, and the heel reflex) were prospectively examined in 204 high-risk infants, of whom 58 developed cerebral palsy, 22 had developmental retardation, and 124 were normal at follow-up examination at 2 years of age. The change in the retention time of reflex activity for each of these reflexes was characteristic for each category or type of neurologic abnormality: retention of palmar grasp reflex, suprapubic extensor reflex, crossed extensor reflex, Rossolimo reflex, and heel reflex in spastic cerebral palsy, as well as retention of plantar grasp reflex, Galant reflex, and asymmetric tonic neck reflex in athetoid cerebral palsy and somewhat weaker retention of these reflexes in developmental retardation (statistical significance P < .001 compared with normally developed patients). These characteristic changes imply that a presumptive diagnosis can be made in neurologically high-risk infants by examination of the primitive reflexes, which are of specific significance among the other neurologic criteria within the first year of life.