Factors That Influence In-Brace Correction in Patients with Adolescent Idiopathic Scoliosis

Lang, Chuandong; Huang, Zifang; Sui, Wenyuan; Di, Muping; He, Shiliang; Fan, Hengwei; Deng, Yong; Yang, Junlin

doi:10.1016/j.wneu.2018.11.228

Cited by 29 publications

(37 citation statements)

References 31 publications

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“…Lang, et al [17] conducted a retrospective analysis with 112 AIS subjects who were undergoing rigid brace treatment and found that the Cobb's angle, sagittal and coronal balances and lumbar-pelvis relationship affect in-brace correction. Nevertheless, the data in this study show that there is no relationship between in-brace correction and the Cobb's angle.…”

Section: Discussionmentioning

confidence: 99%

WITHDRAWN: Anisotropic Textile Brace for Adolescent Idiopathic Scoliosis: Immediate in-brace effect and biomechanics

Fok

Yip

Yick

et al. 2020

Preprint

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Background Rigid bracing is a universal effective treatment for scoliosis. However, body movement restriction and discomfort usually are its shortcomings. The purpose of this case series study was to investigate the feasibility of novel anisotropic textile braces with an artificial hinge adopting the direct three-point pressure system for the initial spinal correction and its biomechanics. Methods Five scoliotic female patients who were on average 12.2 years old with a BMI of 18.7, Risser grade of 1.6 and Cobb’s angle of 22.3˚ were recruited. The outcome measures are spinal correction, contour asymmetry, and interface pressure distribution of the brace. The correlation between the rate of in-brace correction and variables such as the Cobb’s angle, posterior trunk asymmetry index and interface pressure were studied. Results The initial in-brace rate of spinal correction ranged between 9.7% and 87%. The rate of correction based on posterior trunk asymmetry index ranged between 14.1% and 43.2%. The interface pressure from the brace ranged from 4.1 kPa to 25.6 kPa, which is comparable to that exerted by rigid braces. Based on the data in this study, no correlation was found between the in-brace rate of correction and the Cobb’s angle and the pressure exerted by the pads. Conclusions The main finding is that the anisotropic textile brace offers good initial in-brace correction through the application of the three-point pressure system with textile materials. Nevertheless, further follow-up work is recommended to investigate its long-term efficacy. Trial registration: This study was registered at ClinicalTrials.gov (NCT02271256 – Registration date 22nd October 2014).

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Section: Discussionmentioning

confidence: 99%

WITHDRAWN: Anisotropic Textile Brace for Adolescent Idiopathic Scoliosis: Immediate in-brace effect and biomechanics

Fok

Yip

Yick

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…The negative correlation between CA and IBC has been confirmed in our study and previous studies. Studies also revealed that sagittal or coronal imbalance of the spine can decrease IBC and suggested that IS is a complex 3-dimensional deformity of the spine and that sagittal imbalance can affect the curve correction in the coronal plane [7,11]. Georges and Pierre et al made the same conclusion that pelvis morphology and standing balance parameters are correlated with CA, they suggested that IS is not only a question of trunk morphology distortion by itself, but is also related to pelvis asymmetrical bone growth and standing neuromuscular imbalance [12].…”

Section: Discussionmentioning

confidence: 99%

Pelvic rotation parameters related to in-brace correction in patients with idiopathic scoliosis

Zhang

2020

Eur J Med Res

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Background To identify the pelvic parameters affecting in-brace correction (IBC) in patients with idiopathic scoliosis (IS). Methods Patients with IS receiving Chêneau brace treatment in our scoliosis center from January 2019 to November 2019 were retrospectively analyzed. Pelvic rotation parameters, including pelvic incidence (PI), sacral slope (SS), pelvic tilt (PT), L/R ratio, were collected. Other radiographic data, such as Risser sign, coronal and sagittal balance, curve location, kyphosis, lordosis of each patient were also recorded to analyze their correlations with IBC. Correlation analyses were performed to identify the classified variables influencing IBC. The principal component analysis was used to extract common factors of radiographic parameters to eliminate interaction effects. The linear regression equation was established using principal components, the variables influencing IBC were identified. Results A cohort of 44 patients with IS (36 girls and 8 boys) were included in the present study. The mean IBC was 49.87% (range, 3%–100%). IBC of lumbar IS was negatively correlated with apical rotate factor (ARF, B = –0.385), mainly consisted of pelvic coronal plane rotation (PCPR, 0.449), Cobb angle (CA, 0.575), apical vertebral rotation (AVR, 0.918), and pelvic rotate factor (PRF, B = –0.387), mainly consisted of PT (0.861), PI (0.728), PCPR (–0.570). The regression equation of lumbar IS had statistical significance (F = 6.500, P = 0.005, R2 = 0.317), whereas statistically significance was not found in the regression equation of thoracic IS (F = 2.913, P = 0.106). The remaining parameters were not related to IBC. Conclusions For lumbar IS, ARF and PRF have negative effects on IBC, coronal and sagittal rotation of the pelvis is related to IBC.

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“…The negative correlation between CA and IBC has been con rmed in our study and previous studies. Studies also revealed that sagittal or coronal imbalance of the spine can decrease IBC and suggested that IS is a complex 3-dimensional deformity of the spine and that sagittal imbalance can affect the curve correction in the coronal plane [7,11]. Georges and Pierre et al got the same conclusion that pelvis morphology and standing balance parameters are correlated with CA, they suggested that IS is not only a question of trunk morphology distortion by itself but is also related to pelvis asymmetrical bone growth and standing neuromuscular imbalance [12].…”

Section: Discussionmentioning

confidence: 99%

Pelvic Rotation Parameters Related to In-Brace Correction in Patients with Idiopathic Scoliosis

Miao²,

Zhang

2020

Preprint

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BACKGROUND: To identify the pelvic parameters affecting in-brace correction (IBC) in patients with idiopathic scoliosis (IS). METHODS: Patients with IS receiving Chêneau brace treatment in our scoliosis center from January 2019 to November 2019 were retrospectively analyzed. Pelvic rotation parameters, including Pelvic incidence (PI), Sacral slope (SS), pelvic tilt (PT), L/R ratio, were collected. Other radiographic data, such as Risser sign, coronal and sagittal balance, curve location, kyphosis, lordosis of each patient was also recorded to analyze their correlations with IBC. Correlation analyses were performed to identify the classified variables influencing IBC. The principal component analysis was used to extract common factors of radiographic parameters to eliminate interaction effects. The linear regression equation was established using principal components, the variables influencing IBC were identified.RESULTS: A cohort of 44 patients with IS (36 girls and 8 boys) were included in the present study. The mean IBC was 49.87% (range, 3%∽100%). IBC of lumbar IS was negatively correlated with apical rotate factor (ARF, B=-0.385), mainly consisted of pelvic coronal plane rotation (PCPR, 0.449), cobb angle (CA,0.575), apical vertebral rotation (AVR, 0.918), and pelvic rotate factor (PRF, B=-0.387), mainly consisted of PT (0.861), PI (0.728), PCPR (-0.570). The regression equation of lumbar IS had statistical significance (F=6.500, P=0.005，R2=0.317). Whereas statistically significance was not found in the regression equation of thoracic IS (F=2.913, P=0.106). The remaining parameters were not related to IBC.CONCLUSIONS: For lumbar IS, ARF and PRF have negative effects on IBC, Coronal and sagittal rotation of the pelvis is related to IBC.

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Factors That Influence In-Brace Correction in Patients with Adolescent Idiopathic Scoliosis

Cited by 29 publications

References 31 publications

WITHDRAWN: Anisotropic Textile Brace for Adolescent Idiopathic Scoliosis: Immediate in-brace effect and biomechanics

WITHDRAWN: Anisotropic Textile Brace for Adolescent Idiopathic Scoliosis: Immediate in-brace effect and biomechanics

Pelvic rotation parameters related to in-brace correction in patients with idiopathic scoliosis

Pelvic Rotation Parameters Related to In-Brace Correction in Patients with Idiopathic Scoliosis

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