Idiopathic scoliosis: a 20-year retrospective analysis of the surgical activity in a highly specialized clinic

Objective. To analyze the number of patients with idiopathic scoliosis operated on using segmental instrumentation in a highly specialized clinic during the period of 20 years and the severity of their deformities. Material and Methods. The study included patients over 10 years of age with idiopathic scoliosis operated on using segmental instrumentation (CDI, Horizon, M8, Legacy, Expedium, NITEK) in the Children and Adolescents Spine Surgery Clinic of Novosibirsk RITO n.a. Y.L. Tsivyan in 1996–2015. For each year within this period, the number of surgically treated patients, the average Cobb angle of the primary curve, and the number of patients with primary curve less than 90°, from 91° to 120°, and greater than 120° were specified. Results. Analysis of the dynamics of annual surgical activity related to idiopathic scoliosis showed that number of cases has been growing for a number of years and then stabilized. The severity of spinal deformities in operated patients increased over the years, and for several years the most severe deformities (Cobb angle greater than 90°) exceeded 30 %. Later on, the average severity of deformities significantly decreased, which suggests that active surgical work allowed to operate on a significant portion of patients with advanced spinal deformities. Conclusion. The presented data may be useful in the formation of a national registry of patients with scoliosis