Kyphosis in fractures: evaluation of digital measuring

Objective: This study evaluates the manual and digital reliability and reproducibility of five methods of measuring deformity (kyphosis) in thoracolumbar burst fractures. Method: Ninety (90) tomographic images were evaluated and, in each case, kyphotic deformity was measured, both manually and digitally, through the five most relevant methods described in the literature. For the assessment of intraobserver error, 20 cases were measured again. Results: The results show that all five methods are highly reliable and digitally reproducible, with estimated error near or lower than that indicated in the intraobserver error analysis. Cobb's method had the highest concordance (96%) while the sagittal index had the lowest concordance (75%). It is also suggested that digital assessment is more reliable then the manual method. Conclusion: All tested methods are highly reliable and digitally reproducible.

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Bibliographic Details
Main Authors: De Brito,Marcelo Botelho Soares, Bergamaschi,João Paulo Machado, Pellegrino,Luciano Antonio Nassar, Umeta,Ricardo Shigueaki Galhego, Caffaro,Maria Fernanda Silber, Meves,Robert, Avanzi,Osmar
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Coluna 2014
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1808-18512014000200133
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Summary:Objective: This study evaluates the manual and digital reliability and reproducibility of five methods of measuring deformity (kyphosis) in thoracolumbar burst fractures. Method: Ninety (90) tomographic images were evaluated and, in each case, kyphotic deformity was measured, both manually and digitally, through the five most relevant methods described in the literature. For the assessment of intraobserver error, 20 cases were measured again. Results: The results show that all five methods are highly reliable and digitally reproducible, with estimated error near or lower than that indicated in the intraobserver error analysis. Cobb's method had the highest concordance (96%) while the sagittal index had the lowest concordance (75%). It is also suggested that digital assessment is more reliable then the manual method. Conclusion: All tested methods are highly reliable and digitally reproducible.