» Articles » PMID: 31194037

Imbalanced Development of Anterior and Posterior Thorax is a Causative Factor Triggering Scoliosis

Abstract

Objective: Scoliosis is a common disease characterized by spinal curvature with variable severities. There is no generally accepted theory about the physical origin of the spinal deformation of scoliosis. The aim of this study was to explore a new hypothesis suggesting that the curvatures in scoliosis may be associated with the imbalance growth between thoracic vertebral column and sternum.

Methods: We undertook a comparative computed tomography (CT) based morphology study of thoracic vertebrae and sternum of patients with adolescent idiopathic scoliosis (AIS) and age-gender matched normal subjects. We further measured the ratios between the lengths of the sternum and thoracic vertebra of mice with deficiency of fibroblast growth factor receptor 3 (FGFR3), which exhibit scoliosis. Three-week-old C57BL/6J mice were used to generate bipedal and sternal growth plate injury model. Radiographs and histological images were obtained to observe the presence of sternal and spinal deformity.

Results: There was a significant correlation between the severities of scoliosis and the ratios of the sternum to thoracic vertebral lengths. We also found that FGFR3 deficient mice showed smaller ratio of the sternum to thoracic vertebra lengths than that of the wild-type mice, which were similar with that of the AIS patients. Surgery-induced injuries of sternal growth plates can accelerate and aggravate the scoliosis in bipedal mice and imbalanced development of anterior and posterior thoracic occurred before the appearance of scoliosis.

Conclusions: Our findings suggest that the imbalanced growth between the thoracic vertebral column and the sternum is an important causative factor for the pathogenesis of scoliosis including AIS.

The Translational Potential Of This Article: Imbalanced growth between the thoracic vertebral column and the sternum is associated with scoliosis. Surgical or rehabilitation intervention for scoliosis should focus on all components involved in the pathogenesis of curvature to obtain better outcome.

Citing Articles

In vivo kinematic study of lumbar center of rotation under different loads.

Li Z, Liu Z, Yang Y, Zhang Z, Meng L, Miao J BMC Musculoskelet Disord. 2025; 26(1):155.

PMID: 39953502 PMC: 11827185. DOI: 10.1186/s12891-025-08410-8.


Patients with Adolescent Idiopathic Scoliosis Have Higher Metabolic Cost during High-Intensity Interval Training.

Lau R, Kwan R, Cheng J, Hui S, Lam T Int J Environ Res Public Health. 2023; 20(3).

PMID: 36767522 PMC: 9915977. DOI: 10.3390/ijerph20032155.


Incidentally Detected Pericardial Defect in a Patient with Pneumothorax as Confirmed on Video-Assisted Thoracoscopic Surgery.

Cho H, Kang E, Kim M, Jeong S, Lee K Taehan Yongsang Uihakhoe Chi. 2022; 82(3):749-755.

PMID: 36238774 PMC: 9432441. DOI: 10.3348/jksr.2020.0057.


Electromyographic Analysis of Paraspinal Muscles of Scoliosis Patients Using Machine Learning Approaches.

Liang R, Yip J, Fan Y, Cheung J, To K Int J Environ Res Public Health. 2022; 19(3).

PMID: 35162203 PMC: 8835103. DOI: 10.3390/ijerph19031177.


Letter to the editor concerning "Imbalanced development of anterior and posterior thorax is a causative factor triggering scoliosis" by Chen et al., , 2019, https://doi.org/10.1016/j.jot.2018.12.001.

Brink R, Castelein R J Orthop Translat. 2020; 22:142.

PMID: 32440510 PMC: 7231951. DOI: 10.1016/j.jot.2019.07.008.

References
1.
Guo X, Chau W, Chan Y, Cheng J . Relative anterior spinal overgrowth in adolescent idiopathic scoliosis. Results of disproportionate endochondral-membranous bone growth. J Bone Joint Surg Br. 2003; 85(7):1026-31. DOI: 10.1302/0301-620x.85b7.14046. View

2.
Guo X, Chau W, Chan Y, Cheng J, Burwell R, Dangerfield P . Relative anterior spinal overgrowth in adolescent idiopathic scoliosis--result of disproportionate endochondral-membranous bone growth? Summary of an electronic focus group debate of the IBSE. Eur Spine J. 2005; 14(9):862-73. DOI: 10.1007/s00586-005-1002-7. View

3.
Zhu F, Qiu Y, Yeung H, Lee K, Cheng J . Histomorphometric study of the spinal growth plates in idiopathic scoliosis and congenital scoliosis. Pediatr Int. 2006; 48(6):591-8. DOI: 10.1111/j.1442-200X.2006.02277.x. View

4.
Weinstein S, Dolan L, Cheng J, Danielsson A, Morcuende J . Adolescent idiopathic scoliosis. Lancet. 2008; 371(9623):1527-37. DOI: 10.1016/S0140-6736(08)60658-3. View

5.
Doi T, Harimaya K, Matsumoto Y, Iwamoto Y . Aortic location and flat chest in scoliosis: a prospective study. Fukuoka Igaku Zasshi. 2011; 102(1):14-9. View