This chapter has well written text and 13 well illustrated diagrams and pictures showing spinal dysraphic states. Anatomy and physiology of development of spinal dysraphic states, their different locations are described in detail. Incidence, pathogenesis of spinal dysraphic states along with clinical presentation are given in detail. Investigations of spinal dysraphic states are described with the help of diagrams. Management, prognosis and post operative complications of spinal dysraphic states are described at the end of the chapter. 121 references are given for further reading to conclude this chapter.