Smyrnis, P. N., Sekouris, N., & Papadopoulos, G. (2009). Surgical assessment of the proximal thoracic curve in adolescent idiopathic scoliosis. European Spine Journal, 18, 522–530. https://doi.org/10.1007/s00586-009-0902-3

Article  PubMed  PubMed Central  Google Scholar 

Zhang, S., Zhang, L., Feng, X., & Yang, H. (2018). Incidence and risk factors for postoperative shoulder imbalance in scoliosis: A systematic review and meta-analysis. European Spine Journal, 27, 358–369. https://doi.org/10.1007/s00586-017-5289-y

Article  PubMed  Google Scholar 

Bagó, J., Carrera, L., March, B., & Villanueva, C. (1996). Four radiological measures to estimate shoulder balance in scoliosis. Journal of Pediatric Orthopedics. Part B, 5, 31–34. https://doi.org/10.1097/01202412-199605010-00006

Article  PubMed  Google Scholar 

Yang, S., Feuchtbaum, E., Werner, B. C., Cho, W., Reddi, V., & Arlet, V. (2012). Does anterior shoulder balance in adolescent idiopathic scoliosis correlate with posterior shoulder balance clinically and radiographically? European Spine Journal, 21, 1978–1983. https://doi.org/10.1007/s00586-012-2434-5

Article  PubMed  PubMed Central  Google Scholar 

Kuklo, T. R., Lenke, L. G., Graham, E. J., Won, D. S., Sweet, F. A., Blanke, K. M., et al. (2002). Correlation of radiographic, clinical, and patient assessment of shoulder balance following fusion versus nonfusion of the proximal thoracic curve in adolescent idiopathic scoliosis. Spine (Phila Pa 1976), 27, 2013–2020. https://doi.org/10.1097/00007632-200209150-00009

Article  PubMed  Google Scholar 

Wei Chan, C. Y., Chiu, C. K., Ng, Y. H., Goh, S. H., Ler, X. Y., Ng, S. J., et al. (2020). An analysis of preoperative shoulder and neck balance and surgical outcome in 111 adolescent idiopathic scoliosis patients with two subtypes of Lenke 1 curves. Journal of Neurosurgery. Spine, 34, 37–44. https://doi.org/10.3171/2020.5.Spine20397

Article  PubMed  Google Scholar 

Akel, I., Pekmezci, M., Hayran, M., Genc, Y., Kocak, O., Derman, O., et al. (2008). Evaluation of shoulder balance in the normal adolescent population and its correlation with radiological parameters. European Spine Journal, 17, 348–354. https://doi.org/10.1007/s00586-007-0546-0

Article  PubMed  Google Scholar 

Lee, C. S., Hwang, C. J., Lim, E. J., Lee, D. H., & Cho, J. H. (2016). A retrospective study to reveal factors associated with postoperative shoulder imbalance in patients with adolescent idiopathic scoliosis with double thoracic curve. Journal of Neurosurgery. Pediatrics, 25, 744–752. https://doi.org/10.3171/2016.6.Peds16162

Article  PubMed  Google Scholar 

Yagi, M., Takemitsu, M., & Machida, M. (2013). Chest cage angle difference and rotation of main thoracic curve are independent risk factors of postoperative shoulder imbalance in surgically treated patients with adolescent idiopathic scoliosis. Spine (Phila Pa 1976), 38, E1209-1215. https://doi.org/10.1097/BRS.0b013e31829e0309

Article  PubMed  Google Scholar 

Cao, K., Watanabe, K., Hosogane, N., Toyama, Y., Yonezawa, I., Machida, M., et al. (2014). Association of postoperative shoulder balance with adding-on in Lenke Type II adolescent idiopathic scoliosis. Spine (Phila Pa 1976), 39, E705-712. https://doi.org/10.1097/brs.0000000000000325

Article  PubMed  Google Scholar 

Yang, Y., Yang, M., Zhao, J., Zhao, Y., Yang, C., & Li, M. (2019). Postoperative shoulder imbalance in adolescent idiopathic scoliosis: Risk factors and predictive index. European Spine Journal, 28, 1331–1341. https://doi.org/10.1007/s00586-019-05933-2

Article  PubMed  Google Scholar 

O’Brien MF, Kuklo TR, Blanke KM LL. Spinal Deformity Study Group’s Radiographic Measurement Manual.: Memphis: Medtronic Sofamor Danes Inc; 2008.

Kuklo, T. R., Potter, B. K., Schroeder, T. M., & O’Brien, M. F. (2006). Comparison of manual and digital measurements in adolescent idiopathic scoliosis. Spine (Phila Pa 1976), 31, 1240–1246. https://doi.org/10.1097/01.brs.0000217774.13433.a7

Article  PubMed  Google Scholar 

Kwan, M. K., & Chan, C. Y. (2016). Is there an optimal upper instrumented vertebra (UIV) tilt angle to prevent post-operative shoulder imbalance and neck tilt in Lenke 1 and 2 adolescent idiopathic scoliosis (AIS) patients? European Spine Journal, 25, 3065–3074. https://doi.org/10.1007/s00586-016-4529-x

Article  PubMed  CAS  Google Scholar 

Li, J., Hwang, S. W., Shi, Z., Yan, N., Yang, C., Wang, C., et al. (2011). Analysis of radiographic parameters relevant to the lowest instrumented vertebrae and postoperative coronal balance in Lenke 5C patients. Spine (Phila Pa 1976), 36, 1673–1678. https://doi.org/10.1097/BRS.0b013e3182091fba

Article  PubMed  Google Scholar 

Bravo, G., & Potvin, L. (1991). Estimating the reliability of continuous measures with Cronbach’s alpha or the intraclass correlation coefficient: Toward the integration of two traditions. Journal of Clinical Epidemiology, 44, 381–390. https://doi.org/10.1016/0895-4356(91)90076-l

Article  PubMed  CAS  Google Scholar 

Menon, K. V., Pillay, H. M., & Tahasildar, M. A. N. (2015). Post-operative shoulder imbalance in adolescent idiopathic scoliosis: a study of clinical photographs. Scoliosis, 10, 31. https://doi.org/10.1186/s13013-015-0055-6

Article  PubMed  PubMed Central  Google Scholar