• Merve Damla Korkmaz, Murat Korkmaz, Nalan Capan, Goktug Sanli, Yasar Tatar, and Ayse Resa Aydin.
• University of Health Sciences, Kanuni Sultan Suleyman Training and Research Hospital, Department of Physical Medicine and Rehabilitation - Istanbul, Turkey.
• Rev Assoc Med Bras (1992). 2022 May 1; 68 (5): 616-621.

ObjectiveThis study aimed to investigate the effect of an adaptive seating system on pelvic obliquity and spinal coronal/sagittal balance in children with nonambulatory cerebral palsy and scoliosis.MethodsThis was a single-blind, prospective, randomized interventional study. Nonambulatory children aged 6-15 years with cerebral palsy and scoliosis were included. The seating system was used for 4 h/day, and exercises were performed 3 days/week for 12 weeks. The Cobb angle, spinopelvic parameters, pelvic obliquity, Reimer's migration index, and Sitting Assessment Scale were measured before and after treatments.ResultsA total of 29 participants were randomized into two groups, namely, the seating system+exercise group (SSE-group; n=15) and the exercise group (E-group; n=14). There was no significant change in Cobb angle and Reimer's migration index for both hips in SSE-group, but there was a significant increase in E-group (p=0.002, 0.049, and 0.003, respectively). The sagittal vertical axis, pelvic incidence, and pelvic obliquity decreased in SSE-group. However, there was no difference in the other sagittal parameters and Sitting Assessment Scale-total scores among groups.ConclusionThe adaptive seating system was found to be superior in reducing the progression of Cobb angle and hip subluxation/dislocation, decreasing pelvic obliquity, and improving the sagittal balance of the spine/pelvis compared with exercise therapy.

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