Comparison of Spinopelvic Configuration and Roussouly Alignment Types Between Pediatric and Adult Populations

• Published in: Spine (Philadelphia, Pa. 1976) Pa. 1976), 2022-09, Vol.47 (18), p.1303-1313
• Main Authors: Charles, Yann Philippe, Lamas, Vincent, Ilharreborde, Brice, Blondel, Benjamin, Prost, Solène, Bauduin, Eloïse, Laouissat, Féthi, Riouallon, Guillaume, Wolff, Stéphane, Challier, Vincent, Obeid, Ibrahim, Boissière, Louis, Ferrero, Emmanuelle, Solla, Federico, Le Huec, Jean-Charles, Bourret, Stéphane, Faddoul, Joe, Abi Lahoud, Georges N., Fière, Vincent, Vande Kerckhove, Michiel, Lebhar, Jonathan, Giorgi, Hadrien, Faure, Aymeric, Sauleau, Erik A., Pesenti, Sébastien
• Format: Article
• Language: English
• ISSN: 0362-2436; 1528-1159
• DOI: 10.1097/BRS.0000000000004411

STUDY DESIGNRetrospective cross-sectional study. OBJECTIVEThe aim was to describe spinopelvic alignment types by pelvic incidence (PI) and age to compare the Roussouly classification between pediatric and adult populations. SUMMARY OF BACKGROUND DATAThe Roussouly classification was validated for adults. Alignment types may vary during growth. MATERIALS AND METHODSRadiographs of 1706 non pathologic individuals (5-49 yr) were analyzed. Individuals ≤19 years were stratified by chronological age and skeletal maturity (triradiate cartilage, Risser), and compared with adults. Global and spinopelvic alignment parameters were assessed. Roussouly Types 1, 2, 3, 3A (anteverted pelvis), and 4 were determined. The distribution of parameters was analyzed by Bayesian inference. The relationship between PI and age by Roussouly type was modeled by linear regression. RESULTSThe Sagittal Vertical Axis C7 decreased during growth and was significantly smaller in adults (20-34 yr) (Pr>0.99). Thoracic kyphosis and lumbar lordosis increased during growth and were larger in adults (Pr