Cerebral palsy is a non-progressive cerebral sensori-motor defect, acquired either prenatally or in an early life and evolves over the first few years. Until recently many people believed that asphyxia at birth was a major cause of cerebral palsy and that the prevention of asphyxia at birth by improving perinatal care would reduce the number of cerebral palsy children. However the incidence of cerebral palsy in children has remained steady or ever risen slightly. The real cause of cerebral palsy is still unbaron to us.

This analysis was undertaken to determine the clinical features of cerebral palsy in Korea by the retrospective study of 98 children. Over a half of infants with cerebral palsy (64.2%) was recognized by parents before 1 year of corrected age, and their chief complaints were delayed developments or equinus foot deformities.

The most common type of cerebral palsy was spastic type (64.2%) which was followed by athetoid (10.5%), ataxia and hypotonia types (4.2% each). The mixed type was 19.4% Among 98 cerebral palsies, the preterm infants were 42.9% and the infants with low birth weight were 41.4%. The cerebral palsies with low birth weight and preterm infants were more likely to have spastic diplegia.

The most frequent abnormal primitive reflex was absent protective extension(78.3%). No significant associations of the type of cerebral palsy with primitive reflexes were found. An increased risk of cerebral palsy with increased maternal age was not observed in this study.

Of 55 MRI findings, no abnormalities were seen in 27.2%, periventricular leukomalacias in 34.5%, brain atrophies in 21.8%, cerebral infarcts in 10.9%, intracerebral hemorrhage in 3.6%, and delayed myelinations in 1.8%. The periventricular leukomalacias were associated with the preterm infants in 63.2%.