Purpose: Knowledge on the factors affecting the correction rate (CR) aids in the surgical planning among severe idiopathic scoliosis (IS) patients. This study aimed to investigate the independent factors affecting CR among patients with severe IS (Cobb angle ≥ 90°) who underwent single-staged posterior spinal fusion (PSF).
Methods: We retrospectively reviewed 128 severe IS patients who underwent single-staged PSF. Factors including age, height, weight, body mass index, Risser sign, Lenke subtypes, preoperative major Cobb angle, side bending major Cobb angle, side bending flexibility (SBF), motion segments of the major curve, AR curve, number of levels fused, screw density, operative time and postoperative major Cobb angle were analysed using linear regression analysis.
Results: The mean age was 15.5 ± 4.5 years with mean Risser sign of 3.1 ± 1.6. The mean preoperative Cobb, SBF, postoperative Cobb and CR were 102.8 ± 12.3°, 37.5 ± 13.7%, 44.4 ± 13.5° and 57.2 ± 10.8%, respectively. From stepwise multiple linear regression analysis, SBF, Risser sign and AR curve were the independent predictive factors for CR, with R value of 0.345 (p < 0.001). CR can be predicted using the formula: 47.21 + (0.34 × SBF)-(1.47 × Risser sign) + (3.69 × AR), where AR = 1 and non-AR = 0.
Conclusion: The flexibility of the major curve, Risser sign and AR curve were the most important predictors for CR in a single-staged PSF among patients with severe IS.
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http://dx.doi.org/10.1007/s00586-020-06701-3 | DOI Listing |
J Pediatr Orthop
December 2024
Department of Orthopaedic Surgery and Orthopaedic Research Institute, West China Hospital, Sichuan University, Chengdu.
Objective: Proximal junctional kyphosis (PJK) is a prevalent postoperative complication after posterior hemivertebra (HV) resection. Previous research has demonstrated a strong correlation between the development of PJK and reduced bone mineral density. The vertebral bone quality (VBQ) score, derived from magnetic resonance imaging, is considered a predictive and evaluative tool for bone mineral density.
View Article and Find Full Text PDFBackground: Previous studies found decreased ESR1 expression of concave paraspinal muscle progenitor cells could contribute to the initiation and progression of adolescent idiopathic scoliosis (AIS). The current study investigated the clinical characteristics of AIS with asymmetrical ESR1 expression in paraspinal muscle progenitor cells.
Materials And Methods: Bilateral deep paraspinal muscle progenitor cells were obtained from 25 consecutive eligible female patients with AIS.
World Neurosurg
November 2024
General Hospital of Ningxia Medical University, Yinchuan, Ningxia, China. Electronic address:
Objective: To develop and validate a nomogram predicting the postoperative adding-on phenomenon in Lenke 1/2 adolescent idiopathic scoliosis patients, providing a quantitative tool for therapeutic benefit assessment and personalized risk prediction.
Methods: A retrospective analysis was conducted using clinical data from 213 patients. The least absolute shrinkage selection operator was applied to identify the best predictors.
Spine Deform
November 2024
Institut de Biomécanique Humaine Georges Charpak, Arts et Métiers, HESAM Université, Paris, France.
Purpose: Our objective was to analysis the barycentremetry, obtained from the external envelope reconstruction of biplanar radiographs, in adolescent idiopathic scoliosis (AIS) and to determine whether assessing would help predict the distinction between progressive and stable AIS at the early stage.
Methods: A retrospective study with a multicentre cohort of 205 AIS was conducted. All AIS underwent a biplanar X-ray between 2013 and 2020.
World Neurosurg
December 2024
Department of Spine Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China. Electronic address:
Background: Radiographic methods for evaluating skeletal maturity traditionally include the Risser sign and the hand-wrist maturation method. While the cervical vertebral maturation (CVM) stage is widely recognized in orthodontics, its application in assessing spinal growth, particularly in adolescent idiopathic scoliosis (AIS), has been less explored. This study explores the correlation between CVM, chronological age, and the Risser sign to evaluate the feasibility of CVM in assessing skeletal development in adolescents.
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