Special issue on pain and intellectual and developmental disabilities

reported in CP. Pain prevalence and orthopedic outcomes were doc umented retrospectively and factors that predicted pain at 1- year follow- up were identified. This study emphasizes the importance of attending to chronic pain before surgery to improve pain and func tional outcomes. These five papers, originating from around the world, report on innovative approaches to understanding the complexities of pain in children with IDD. Initiatives like the International Association for the Study of Pain (IASP)'s 2019 global year of pain in the most vul nerable as well as IASP's new Special Interest Group on Pain and Intellectual and Developmental Disabilities (PIDDSIG) and this cur rent special issue with Paediatric and Neonatal Pain are all examples of recent momentum to bring attention to pain and IDD. These ini -tiatives, among others, aim to mobilize researchers and healthcare providers to work together and with children with IDD and their families to generate clinically relevant knowledge and ultimately to ensure that knowledge improves the lives of children with IDD.