• Olga M Pavlova, Sergey O Ryabykh, Danil A Kozyrev, and Alexander V Gubin.
• Russian Ilizarov Scientific Center, Kurgan, Russia. Electronic address: pavlova.neuro@mail.ru.
• World Neurosurg. 2017 Oct 1; 106: 551-556.

ObjectivesWe sought to evaluate long-term results of surgical treatment of thoracolumbar segmental spinal dysgenesis (SSD).MethodsWe analyzed 8 patients with thoracolumbar SSD treated in our institution. Each case was evaluated for specific clinical and radiologic criteria and types and outcomes of treatment.ResultThe average age of primary surgery was 3.4 years (median 3.4 years, range 1.7-7 years). The average correction of kyphosis was 49.3° (mean 45°, from 25°-75°) and scoliosis 10.6° (mean 10°, from 0°-25°). Average follow-up time was 3.2 years (mean 2.6 years, from 1.8-5.6 years). Neurologic improvement was also achieved in all patients. The Japanese Orthopaedic Association scale score (Benzel's modification) was increased by 2.5 points on average (mean 2.5 points, from 2-5 points). One patient had complications: pseudarthrosis and rod fracture followed by refusion.ConclusionsOur treatment strategy provides favorable deformity correction and neurologic improvement. It is limited by immature vertebral structures in newborns and infants, who should be carefully monitored from birth with braces until they reach the age when a fixing tool can be used.Copyright © 2017 Elsevier Inc. All rights reserved.

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