The Height Gain in Scoliotic Deformity Correction: Assessed by New Predictive Formula

Şarlak, Ahmet Yılmaz; Atmaca, Halil; Musaoğlu, Resul; Veliev, E. Veli

doi:10.1155/2012/167021

Cited by 13 publications

(38 citation statements)

References 11 publications

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“…Comparison of the Patient #24 and the Patient #29 confirmed the hypothesis stated by Sarlak et al that using the Cobb angle only for predicting the loss of body height associated with scoliosis may be inaccurate [12]. Two patients with similar curve pattern and Cobb angle values but with the difference in trunk height of 70 mm revealed to have similar loss of height due to their curves calculated by the four analyzed methods.…”

Section: Discussionsupporting

confidence: 73%

“…All methods employ sophisticated mathematical formulas which make their use in everyday clinical practice cumbersome. Potential for inaccuracy of the methods has been reported, because none of them consider the actual height of the subject with scoliosis [12]. In spite of this hypothesized limitation the methods are being used to calculate BMI or VC of patients with scoliosis [2,5,13,14].…”

Section: Introductionmentioning

confidence: 99%

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Calculation of corrected body height in idiopathic scoliosis: comparison of four methods

et al. 2014

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Purpose The aim of the study was to analyze four radiographic methods of calculating the loss of body height associated with scoliosis. Methods Thirty patients with right thoracic idiopathic scoliosis were examined with standing postero-anterior radiographs. Cobb angles of the upper thoracic, main thoracic and lumbar curves were measured. The loss of body height due to scoliosis was measured directly on the radiographs and then calculated using the methods of Bjure, Kono, Stokes and Ylikoski, respectively. The reproducibility of calculations was tested. Detailed analysis of two patients with similar Cobb angle but different trunk height was performed. Results The mean Cobb angle of the main thoracic curve was 46°(21°-74°). The mean loss of body height was 23 mm (11-43 mm) calculated by method of Bjure, 7 mm (-24 to 46 mm) by Kono, 20 mm (5-47 mm) by Stokes, 14 mm (3-36 mm) by Ylikoski, versus 18 mm (3-50 mm) measured directly on radiographs. The overall difference between the loss of body heights was significant (p \ 0.0001), with significant differences in pairs for: Bjure versus Kono (p \ 0.0001), Stokes versus Kono (p = 0.0002), Kono versus measured (p = 0.0061) and Bjure versus Ylikoski (p = 0.0386). Strong linear correlation between the methods was found (r C 0.92; p \ 0.0001). High reproducibility of height loss calculations was noticed. The two patients with similar Cobb angle and different trunk height revealed similar height loss calculated, while different loss measured on radiographs. Conclusions There existed no overall agreement between the four methods of calculation of the loss of body height associated with scoliosis. Calculations based on the Cobb angle produced inaccuracy and could be supplemented with data considering trunk size.

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Section: Discussionsupporting

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Calculation of corrected body height in idiopathic scoliosis: comparison of four methods

et al. 2014

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“…Several attempts have been made to identify the underlying factors that could affect the surgical spinal height gain. Significant correlation between correction of the Cobb angle and the increase in spinal longitudinal length was recognized in previous studies 4 5 6 7 . However, controversies still exist concerning the influence of sagittal profile 5 6 , as well as other features such as the length of the curve, number of instrumented vertebrae and curve pattern.…”

mentioning

confidence: 70%

“…As for the sagittal profile, Sarlak and Watanabe’s studies were limited by the fact that the average changes in kyphosis were relatively small 4 7 . Spencer’s study 6 confirmed that changes in kyphosis and lordosis were small and were non-significant predictors of height gain.…”

Section: Discussionmentioning

confidence: 99%

Factors favoring regain of the lost vertical spinal height through posterior spinal fusion in adolescent idiopathic scoliosis

Shi

Mao

et al. 2016

Sci Rep

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Height gain is a common beneficial consequence following correction surgery in adolescent idiopathic scoliosis (AIS), yet little is known concerning factors favoring regain of the lost vertical spinal height (SH) through posterior spinal fusion. A consecutive series of AIS patients from February 2013 to August 2015 were reviewed. Surgical changes in SH (ΔSH), as well as the multiple coronal and sagittal deformity parameters were measured and correlated. Factors associated with ΔSH were identified through Pearson correlation analysis and multivariate regression analysis. A total of 172 single curve and 104 double curve patients were reviewed. The ΔSH averaged 2.5 ± 0.9 cm in single curve group and 2.9 ± 1.0 cm in double curve group. The multivariate regression analysis revealed the following pre-operative variables contributed significantly to ΔSH: pre-op Cobb angle, pre-op TK (single curve group only), pre-op GK (double curve group only) and pre-op LL (double curve group only) (p < 0.05). Thus change in height (in cm) = 0.044 × (pre-op Cobb angle) + 0.012 × (pre-op TK) (Single curve, adjusted R2 = 0.549) or 0.923 + 0.021 × (pre-op Cobb angle1) + 0.028 × (pre-op Cobb angle2) + 0.015 × (pre-op GK)-0.012 × (pre-op LL) (Double curve, adjusted R2 = 0.563). Severer pre-operative coronal Cobb angle and greater sagittal curves were beneficial factors favoring more contribution to the surgical lengthening effect in vertical spinal height in AIS.

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“…Several formulas have been proposed by various authors to determine the increase in height after scoliosis correction. [6][7][8][9] However, these formulas are based on a combination of preoperative and post-operative radiological parameters. Using these formulas, the increase in height could only be determined after the surgery.…”

Section: Introductionmentioning

confidence: 99%

Prediction of height increment using preoperative radiological parameters following selective thoracic fusion with alternate-level pedicle screw construct in Lenke 1 and 2 adolescent idiopathic scoliosis patients

Keong

Aziz

Wei

2017

J Orthop Surg (Hong Kong)

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Purpose: This study aims to derive a formula to predict post-operative height increment in Lenke 1 and Lenke 2 adolescent idiopathic scoliosis (AIS) patients using preoperative radiological parameters. Methods: This study involved 70 consecutive Lenke 1 and 2 AIS patients who underwent scoliosis correction with alternate-level pedicle screw instrumentation. Preoperative parameters that were measured included main thoracic (MT) Cobb angle, proximal thoracic (PT) Cobb angle, lumbar Cobb angle as well as thoracic kyphosis. Side-bending flexibility (SBF) and fulcrumbending flexibility (FBF) were derived from the measurements. Preoperative height and post-operative height increment was measured by an independent observer using a standardized method.

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The Height Gain in Scoliotic Deformity Correction: Assessed by New Predictive Formula

Cited by 13 publications

References 11 publications

Calculation of corrected body height in idiopathic scoliosis: comparison of four methods

Calculation of corrected body height in idiopathic scoliosis: comparison of four methods

Factors favoring regain of the lost vertical spinal height through posterior spinal fusion in adolescent idiopathic scoliosis

Prediction of height increment using preoperative radiological parameters following selective thoracic fusion with alternate-level pedicle screw construct in Lenke 1 and 2 adolescent idiopathic scoliosis patients

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