In Brief:
A total of 121 of 135 individuals, who had undergone nonoperative treatment for adolescent idiopathic scoliosis (AIS) with a minimum follow-up of 10 years, responded to a questionnaire on pain, disability, psychological well-being, health-related quality of life, and general questions about their disease; 81 of the individuals participated in a radiologic and clinical follow-up investigation. Patients with moderate to large curves (≥45°) reported significantly more pain in the Visual Analog Scale. Overall long-term outcome of nonoperatively treated AIS is satisfactory, and no significant compromise of disability and overall quality of life was shown compared with normative values.