An estimated 9 million children every year are affected by pediatric spinal deformities, encompassing a broad spectrum of pathologies. New classification systems, innovative imaging modalities, and advances in surgical techniques have contributed to a continually evolving, evidence-based treatment paradigm. Patient variables such as the age of onset, severity, course of deformity progression, as well as the availability of technology pose individualized challenges. AOSpine Masters Series, Volume 9: Pediatric Spinal Deformity is a concise yet comprehensive review of fundamental surgical and nonsurgical approaches, contemporary issues, and treatment obstacles. Internationally renowned spine surgeons Luis Roberto Vialle, Marinus de Kleuver, and Sigurd Berven and a cadre of esteemed contributors deliver a state-of-the-art reference on deformities of the pediatric spine. From early childhood to adolescent spine disorders, 17 richly illustrated chapters cover diagnosis, preoperative evaluation, imaging, spine surgery interventions, non-fusion procedures, and long-term management.