Context Previous long-term studies of idiopathic scoliosis have included patients with other
etiologies, leading to the erroneous conclusion that all types of idiopathic scoliosis inevitably
end in disability. Late-onset idiopathic scoliosis (LIS) is a distinct entity with a unique natural
history. Objective To present the outcomes related to health and function in untreated
patients with LIS. Design, Setting, and Patients Prospective natural history study performed
at a midwestern university with outpatient evaluation of patients who presented between …