Pelvic parameter improvement following deformity correction in adolescence idiopathic scoliosis: A case series

Scoliosis is defined as 3-dimensional deformity of the spine with lateral deviation more than 10° and rotation of the vertebrae. Adolescence idiopathic scoliosis (AIS) is scoliosis that affect children between the age of 11–18 years old without any identifiable cause or underlying disease. This study will compare the pelvic parameters and functional score of the patients before and after the procedure. Pelvic parameters are represented by 3 angles: pelvic incidence (PI), pelvic tilt (PT), and sacral slope (SS) of 5 adolescence idiopathic scoliosis patients. Functional outcomes were evaluated using Indonesian SF-36 questionnaire and also pain scale of preoperative and postoperative. An important outcome of this study was a statistically significant improvement in coronal alignment, functional capacity, pain, and role of limitation due to physical health. Coronal angle deformity correction of AIS patients is correlated with sagittal improvement which caused by compensatory alteration of pelvic parameter. This finding correlates with the improvement of functional outcome of the patients. •Coronal angle deformity correction of AIS patients is correlated with sagittal improvement which caused by compensatory alteration of pelvic parameter•Sagittal improvement is correlated to coronal angle deformity correction in AIS patients which caused by compensatory alteration of pelvic parameter•Compensatory alteration of pelvic parameter that caused by sagittal improvement correlated to coronal angle deformity correction in AIS patients