| Summary: | Background. The distribution of idiopathic scoliosis is quite large and ranges
from 50 to 80 % among all spinal deformities.
Materials and methods. 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)
Conclusions. 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.
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