Patterns of coronal and sagittal deformities in adolescent idiopathic scoliosis

Abstract Background Thoracic scoliosis has been shown to be associated with hypokyphosis in adolescent idiopathic (AIS). However, the relationship of sagittal spino-pelvic parameters different coronal curve patterns and their influence on patient-perceived quality life is unknown. This study aims determine association between malalignment patients AIS effects SRS-22r scores. Methods A cross-sectional was conducted 1054 consecutive AIS. The Cobb angle, thoracic kyphosis (TK), lumbar lordosis (LL), pelvic incidence (PI), PI-LL mismatch (PI-LL), tilt (PT), sacral slope (SS) were measured standing radiographs. angle (mild: 10–20°; moderate: > 20–40°; severe: 40°) PI (low: < 35°; average: 35–50°; high: 50°) divided into 3 sub-groups for comparison. Relationship magnitudes studied as Results Low had smaller SS (30.1 ± 8.3° vs 44.8 7.7°; p 0.001), PT (? 0.3 8.1° 14.4 7.5°; LL (42.0 13.2° 55.1 10.6°; negative 12.1 13.1° 4.1 10.5°; 0.001) compared large PI. There no significant relationships TK ( = 0.905) or magnitude 0.431). No differences observed mild, moderate severe angles. scores only correlated larger angles negatively function, appearance pain domains. Conclusions profile especially but not pattern. All have a similar regardless type. it appears that deformity greater outcomes those 40°.