Abstract

The neurodevelopmental consequences of nonsyndromic single-suture (NSS) craniosynostosis are the subject of continued debate. Although the predictive validity of the Bayley Scales of Infant and Toddler Development (Third Edition) (BSID-III) have been questioned, this neurodevelopmental testing battery continues to be widely utilized among multidisciplinary craniofacial teams. The purpose of this study is to evaluate the neurodevelopmental functioning of patients with NSS craniosynostosis before and after surgical correction and the impact of surgical correction on neurodevelopmental trajectory based on BSID-III testing. All patients with NSS craniosynostosis who underwent cranial vault remodeling between 2009 and 2020 were considered for inclusion. Patients who failed to complete BSID-III testing within 2 months of surgery preoperatively and 2 years of surgery postoperatively were excluded. A total of 66 patients met criteria for the study. On language testing, both the preoperative mean score ( P =0.007) and postoperative mean score ( P =0.003) were significantly lower than the population norm. Furthermore, on motor testing, both the preoperative mean score ( P =0.005) and postoperative mean score ( P =0.001) were significantly lower than the population norm. Bayley Scales of Infant and Toddler Development (Third Edition) testing revealed no significant change between preoperative and postoperative neurodevelopmental functioning. Overall, this study suggests that patients with NSS craniosynostosis experience modest delays in language and motor development, which are present before and after cranial vault remodeling. In addition, this study provides evidence that cranial vault remodeling does not significantly impact the neurodevelopmental trajectory. Multicenter st udies and refined neurodevelopmental testing methods are necessary to definitively establish the neurodevelopmental implications of NSS craniosynostosis.

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