Diurnal Variation of Cobb Angle Measurement in Adolescent Idiopathic Scoliosis

Beauchamp, Marc; Labelle, Hubert; Grimard, Guy; Stanciu, C; Poitras, Benoît; Dansereau, J.

doi:10.1097/00007632-199309000-00002

Cited by 72 publications

(34 citation statements)

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“…This has also been quantified: in adolescents, regardless of curve magnitude. The mean difference between a standing radiograph and a supine one has been quantified as 9°Cobb [23], or around 20 % [24]. In ADIS it has been shown that in severe curves (mean Cobb angle: 60 degrees) performing an x-ray at different hours of the day [25] can give a measurement error due to the worsening of the curve as the days goes by ie from the morning to the evening: this can easily be attributed to the postural collapse of the spine.…”

Section: Discussionmentioning

confidence: 99%

Effects of Sitting Habits and Physical Activity Levels on Spine and Pelvis Deformations in School Children

Song¹,

Kong²,

Park³

et al. 2017

Exerc Sci

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Background: Scoliosis fusion surgery is generally considered the only means to stop the progression of adult idiopathic scoliosis (ADIS), but for patients refusing surgery there is lack of evidence in favour of conservative treatment. The aim of the present study was to verify the possible effectiveness of scoliosis-specific exercises when facing ADIS progression. Methods: We designed a retrospective cohort study. We included 34 ADIS patients in treatment at our Institute (5 males and 29 females, mean age was 38.0 ± 11.0), exclusively treated with specific Scoliosis Specific SEAS exercises. Instrumentation: SEAS exercises are scoliosis-specific exercises. In adult patients they are aimed to recover postural collapse, postural control and vertebral stability through an active self-correction. Postural integration is a key element, including the neuromotor integration of correct postures and an ergonomic education program. Therapy includes at least two weekly exercise sessions each lasting 45 min. Outcome measures: Radiographic progression was the main outcome and it was analysed as a continuous variable.

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Section: Discussionmentioning

confidence: 99%

Effects of Sitting Habits and Physical Activity Levels on Spine and Pelvis Deformations in School Children

Song¹,

Kong²,

Park³

et al. 2017

Exerc Sci

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“…The majority of them have analysed the reading error (on the same plate). Besides, variability connected to the procedure and to the postural changes are also to be considered [11,13,16,30].…”

Section: Discussionmentioning

confidence: 99%

A system for integrated measurement of ventilator settings, lung volume change and blood gases during high-frequency oscillatory ventilation

Markhorst

Genderingen

Leenhoven

et al. 2003

Journal of Medical Engineering & Technology

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The aim was to test a new instrument, the BACES system, an articulated arm connected to a computer, to improve noninvasive examination of the spine and to reduce X-ray examinations. To this aim, four observers performed three series of eight measurements on a dummy and two healthy volunteers. Data on the projection of the spine, any curve detectable on the frontal and sagittal plane, and any rotation at each thoracolumbar level were collected and analysed. To detect the role of the observer, of the procedure and of the object in measurement variability, a two-factor analysis of variance was performed. The results showed measurement errors for kyphosis and scoliosis generally below 3 degrees, whereas the lordosis showed a major variability, especially in volunteers, because of the attitude role. Rotations showed a limited variability too, generally below 2 degrees. In the clinical setting, > 2 SD may reasonably be considered a clinical change because it has not a great chance of being a measurement error. Thus, the BACES system allowed us to identify with fairly good precision kyphosis, scoliosis and trunk rotations. Even though at the moment no surface measurement method can replace X-rays, the instrument can integrate and limit the use of radiographic evaluations.

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“…Despite the fact that the intra-observer reliability of Cobb angle measurements of radiographs is not ideal [6,20], it is the current gold standard for the measurement of the deformity, as well as the accepted instrument for clinical decisionmaking. Previous studies [2,25] have monitored diurnal variation in Cobb angle and have reported wide differences that were explained by disc shrinkage. As first stated by Risser in 1958 [21] and now widely accepted, a 10°increase in Cobb angle indicates a clinically significant change that may require a major treatment decision.…”

Section: Inter-observer Reliabilitymentioning

confidence: 99%

Radiation-free quantitative assessment of scoliosis: a multi center prospective study

et al. 2006

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Accurate quantitative measurements of the spine are essential for deformity diagnosis and assessment of curve progression. There is much concern related to the multiple exposures to ionizing radiation associated with the Cobb method of radiographic measurement, currently the standard procedure for diagnosis and follow-up of the progression of scoliosis. In addition, the Cobb method relies on 2-D analysis of a 3-D deformity. The aim of this prospective study was to investigate the clinical value of Ortelius800 TM that provides a radiation-free method for scoliosis assessment in three planes (coronal, sagittal, apical), with simultaneous automatic calculation of the Cobb angle in both coronal and sagittal views. Analysis of the clinical value of the device for assessing spinal deformities was performed on patients with adolescent idiopathic scoliosis, deformity angles ranging from 10°t o 48°. Correlation between Cobb angles measured manually on standard erect posteroanterior radiographs and those calculated by Ortelius800 TM showed an absolute difference between the measurements to be significantly less than ± 5°for coronal measurements and significantly less than ± 6°for sagittal measurements indicating good correlation between the two methods. The measurements from four independent sites and six independent examiners were not significantly different. We found the novel clinical tool to be reliable for following mild and moderate idiopathic curves in both coronal and sagittal planes, without exposing the patient to ionizing radiation. Considering the need for further validation of this new method, any change in treatment protocol should still be based on radiographic control.

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Diurnal Variation of Cobb Angle Measurement in Adolescent Idiopathic Scoliosis

Cited by 72 publications

References 0 publications

Effects of Sitting Habits and Physical Activity Levels on Spine and Pelvis Deformations in School Children

Effects of Sitting Habits and Physical Activity Levels on Spine and Pelvis Deformations in School Children

A system for integrated measurement of ventilator settings, lung volume change and blood gases during high-frequency oscillatory ventilation

Radiation-free quantitative assessment of scoliosis: a multi center prospective study

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