Differences in Standing and Sitting Postures of Youth with Idiopathic Scoliosis from Quantitative Analysis of Digital Photographs

Fortin, Carole; Feldman, Debbie Ehrmann; Cheriet, Foued

doi:10.3109/01942638.2012.747582

Cited by 17 publications

(13 citation statements)

References 30 publications

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“…In previous photographic studies, the distance between the camera and the object was reported to be 173 cm [97, 100], 300 cm [73, 81, 95, 101], or 400 cm [55]. The camera was positioned at the height of 70, 127, 80 or 90 cm [81], while other authors set the camera by centering the lens at half of the child’s height [81, 95, 98].…”

Section: Discussionmentioning

confidence: 99%

Two-dimensional digital photography for child body posture evaluation: standardized technique, reliable parameters and normative data for age 7-10 years

et al. 2017

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BackgroundDigital photogrammetry provides measurements of body angles or distances which allow for quantitative posture assessment with or without the use of external markers. It is becoming an increasingly popular tool for the assessment of the musculoskeletal system. The aim of this paper is to present a structured method for the analysis of posture and its changes using a standardized digital photography technique.Material and methodsThe purpose of the study was twofold. The first one comprised 91 children (44 girls and 47 boys) aged 7–10 (8.2 ± 1.0), i.e., students of primary school, and its aim was to develop the photographic method, choose the quantitative parameters, and determine the intraobserver reliability (repeatability) along with the interobserver reliability (reproducibility) measurements in sagittal plane using digital photography, as well as to compare the Rippstein plurimeter and digital photography measurements. The second one involved 7782 children (3804 girls, 3978 boys) aged 7–10 (8.4 ± 0.5), who underwent digital photography postural screening. The methods consisted in measuring and calculating selected parameters, establishing the normal ranges of photographic parameters, presenting percentile charts, as well as noticing common pitfalls and possible sources of errors in digital photography.ResultsA standardized procedure for the photographic evaluation of child body posture was presented. The photographic measurements revealed very good intra- and inter-rater reliability regarding the five sagittal parameters and good reliability performed against Rippstein plurimeter measurements. The parameters displayed insignificant variability over time. Normative data were calculated based on photographic assessment, while the percentile charts were provided to serve as reference values. The technical errors observed during photogrammetry are carefully discussed in this article.ConclusionsTechnical developments are allowed for the regular use of digital photogrammetry in body posture assessment. Specific child positioning (described above) enables us to avoid incidentally modified posture. Image registration is simple, quick, harmless, and cost-effective. The semi-automatic image analysis, together with the normal values and percentile charts, makes the technique reliable in terms of child’s posture documentation and corrective therapy effects’ monitoring.Electronic supplementary materialThe online version of this article (10.1186/s13013-017-0146-7) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

Two-dimensional digital photography for child body posture evaluation: standardized technique, reliable parameters and normative data for age 7-10 years

et al. 2017

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“…However, we cannot determine the error of measurement related to patient position. Fortin et al found significant reliability of a photography technique similar to that used in our investigation [29,30]. To diminish this error only one trained investigator did all photographs.…”

Section: Shortcomingsmentioning

confidence: 90%

Does patient perception of shoulder balance correlate with clinical balance?

Matamalas

Bagó

D’Agata³

et al. 2015

Eur Spine J

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“…The performance and accuracy of the aforementioned methods with freehand 3-D ultrasound have not been evaluated in vivo , and the effect of the patient posture was not taken into account in above studies. It has been reported that the muscle balance and standing stability can be significantly influenced by body postures [32] , [33] . Chen et al [34] reported a preliminary study with four scoliosis patients to demonstrate the feasibility of measuring spine curvature based on a coronal view image formed using 3-D ultrasound imaging.…”

Section: Introductionmentioning

confidence: 99%

Freehand three-dimensional ultrasound system for assessment of scoliosis

Cheung

Zhou

Law

et al. 2015

Journal of Orthopaedic Translation

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SummaryBackground/ObjectiveStanding radiograph with Cobb's method is routinely used to diagnose scoliosis, a medical condition defined as a lateral spine curvature > 10° with concordant vertebral rotation. However, radiation hazard and two-dimensional (2-D) viewing of 3-D anatomy restrict the application of radiograph in scoliosis examination.MethodsIn this study, a freehand 3-D ultrasound system was developed for the radiation-free assessment of scoliosis. Bony landmarks of the spine were manually extracted from a series of ultrasound images with their spatial information recorded to form a 3-D spine model for measuring its curvature. To validate its feasibility, in vivo measurements were conducted in 28 volunteers (age: 28.0 ± 13.0 years, 9 males and 19 females). A significant linear correlation (R2 = 0.86; p < 0.001) was found between the spine curvatures as measured by Cobb's method and the 3-D ultrasound imaging with transverse process and superior articular process as landmarks. The intra- and interobserver tests indicated that the proposed method is repeatable.ResultsThe 3-D ultrasound method using bony landmarks tended to underestimate the deformity, and a proper scaling is required. Nevertheless, this study demonstrated the feasibility of the freehand 3-D ultrasound system to assess scoliosis in the standing posture with the proposed methods and 3-D spine profile.ConclusionFurther studies are required to understand the variations that exist between the ultrasound and radiograph results with a larger number of volunteers, and to demonstrate its potential clinical applications for monitoring of scoliosis patients. Through further clinical trials and development, the reported 3-D ultrasound imaging system can potentially be used for scoliosis mass screening and frequent monitoring of progress and treatment outcome because of its radiation-free and easy accessibility feature.

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Differences in Standing and Sitting Postures of Youth with Idiopathic Scoliosis from Quantitative Analysis of Digital Photographs

Cited by 17 publications

References 30 publications

Two-dimensional digital photography for child body posture evaluation: standardized technique, reliable parameters and normative data for age 7-10 years

Two-dimensional digital photography for child body posture evaluation: standardized technique, reliable parameters and normative data for age 7-10 years

Does patient perception of shoulder balance correlate with clinical balance?

Freehand three-dimensional ultrasound system for assessment of scoliosis

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