O-073 Total And Regional Corpus Callosum Volumes Are Related To Intelligence And Motor Function In Dyskinetic Cerebral Palsy

Background The relationship between corpus callosum (CC) morphology and mainly motor outcomes has been studied in spastic cerebral palsy (CP) but not yet in dyskinetic CP, which has been recently related to a diffuse brain injury pattern. This study aims to analyse the relationship of total and regional CC volumes with intelligence and motor impairment severity in dyskinetic CP. Methods 15 subjects (age range, 12–34) with dyskinetic CP and signs of perinatal asphyxia underwent a MRI. CC total, anterior, central and posterior volumes were calculated (Figure 1). The intelligence and motor scales most commonly used in CP were administered. Results The CC total volume and most of its parts were related to intelligence and motor measures (Table 1). Conclusions Total CC volume may be indicative of intelligence and motor status in dyskinetic CP. Regionally, the posterior part is the most related to intelligence, in agreement with recent theories of intelligence. The anterior part of the CC is not found to be related to motor function. This result agrees with the fact that premotor and sensorimotor fibres are located more posteriorly than previously thought.