POSTERIOR SPONDYLOSYNDESIS IN THE TREATMENT OF IDIOPATHIC THORACIC SCOLIOSIS 

Sosnin Andrey Gennad'evich, Candidate of medical sciences, traumatologist-orthopedist, Privolzhsky District Medical Center of the Federal Medical and Biological Agency of Russia (2 Nizhnevolzhskaya embankment, Nizhny Novgorod , Russia), E-mail: sosdoc@yandex.ru
Aleynik Aleksandr Yakovlevich, Candidate of medical sciences, neurosurgeon/traumatologist-orthopedist, department of oncology and neurosurgery, University Clinic, Privolzhsky Research Medical University (10/1 Minina and Pozharskogo square, Nizhny Novgorod, Russia), E-mail: malchovetsky@gmail.com
Mlyavykh Sergey Gennad'evich, Candidate of medical sciences, neurosurgeon/traumatologist-orthopedist, department of oncology and neurosurgery, University Clinic, Privolzhsky Research Medical University (10/1 Minina nad Pozharskogo square, Nizhny Novgorod, Russia); head of the sub-department of traumatology, orthopedics and neurosurgery named after M. V. Kolokoltseva, Privolzhsky Research Medical University (10/1 Minina and Pozharskogo square, Nizhny Novgorod, Russia), E-mail: malchovetsky@gmail.com
Yarikov Anton Viktorovich, Candidate of medical sciences, neurosurgeon/traumatologist-orthopedist, Privolzhsky District Medical Center of the Federal Medical and Biological Agency of Russia (2 Nizhnevolzhskaya embankment, Nizhny Novgorod, Russia); City Clinical Hospital No. 39 (144 Moskovskoye highway, Nizhny Novgorod, Russia), E-mail: anton-yarikov@mail.ru
Smirnov Igor' Igorevich, Neurosurgeon, City Clinical Hospital No. 39 (144 Moskovskoye highway, Nizhny Novgorod, Russia), E-mail: igorev_19931993@mail.ru 

617-089.844 

10.21685/2072-3032-2020-3-1 

Background. The distribution of idiopathic scoliosis is quite large and ranges from 50 to 80 % among all spinal deformities.
Materials and discussions. Preoperative clinical and radiological data and data 5 years after surgery in patients with idiopathic thoracic scoliosis operated on with the use of posterior transpedicular fixation and posterior fusion were analyzed. 179 patients (154 women, 25 men) aged from 10 to 25 years old (mean age is 16.1 years old) were examined and operated, divided into 2 two groups. Group I with mobile deformities included 72 patients (69:3), in whom only the main curvature arc was included in the area of posterior spondylosyndesis and fixation. Group II with rigid arches included 107 patients (85:22) with a more extensive spondylosyndesis zone. The average degree of correction was 78 % (from 45 to 98 %).
Results. There were no statistically significant demographic or perioperative indicators between the groups, except for the average number of levels of posterior spondylosyndesis (group I: 9.6 (from 4 to 13), group II: 11.5 (from 8 to 15); p<0.001)
Findings. The use of prognostic formulas to determine the indices of mobility and deformity correction made it possible for mobile deformities (group I) to limit the extent of interventions and to include only the main thoracic arch of the deformity in the zone of posterior spondylosyndesis. In rigid deformities (group II) with compensatory lumbar and residual arches> 25 ° (calculated from functional radiographs), the zone of fixation and posterior spondylosyndesis was extended by two or three spinal motion segments in the caudal direction to ensure sagittal and frontal balance. 

idiopathic scoliosis, spinal deformity, scoliosis, deformity correction, scoliosis surgery 

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