Influence of cervical spine position on the radiographic parameters of the thoracic inlet alignment

Janusz, Piotr; Tyrakowski, Marcin; Główka, Paweł; Offoha, Roosevelt; Siemionow, Kris

doi:10.1007/s00586-015-4023-x

Cited by 37 publications

(30 citation statements)

References 18 publications

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“…Before the study, we suspected that the result of normal population might be different from previous studies of asymptomatic subjects since we excluded the disc degeneration asymptomatic subjects. However, most parameters including T1S (25.8 ± 5.1) in the NG was similar to asymptomatic subjects in previous studies, [ 13 ] even though asymptomatic subjects in previous studies might have contained some subjects with disc degeneration. We considered that the number of degenerative cervical discs generally was small and the level of degeneration was mild while the subjects with cervical disc degeneration were asymptomatic; therefore, we infer that a small number of degenerative discs and mild disc degeneration might not cause an obvious impact on T1S.…”

Section: Discussionsupporting

confidence: 79%

Characteristics of cervical sagittal parameters in healthy cervical spine adults and patients with cervical disc degeneration

Rong

Liu

et al. 2018

BMC Musculoskelet Disord

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BackgroundThe cervical sagittal parameters of the normal population and the impact of disc degeneration on cervical sagittal alignment have not been clearly defined yet. This study is applied to investigate the characteristics and relationships of cervical sagittal parameters in normal adults and patients with cervical disc degeneration.MethodsWe reviewed 50 normal control subjects (normal group, NG) and 50 patients with cervical disc degeneration (degeneration group, DG), who had both cervical MRI and radiographs obtained together, between January 2010 and September 2015. Data including C2–7 lordosis (CL), T1 slope (T1S), thoracic inlet angle (TIA), neck tilt (NT), C2–7 sagittal vertical axis (C2–7 SVA), cervical tilting, and cranial tilting on cervical radiographs were collected and analyzed.ResultsT1S in the NG was significantly greater than in the DG (P < 0.05), while NT and C2–7 SVA in the NG were significantly lower than in the DG (P < 0.01 and P < 0.05, respectively). T1S positively correlated with CL in both groups (Pearson correlation coefficients of 0.588 in the NG and 0.504 in the DG). No significant difference was seen in TIA between the NG and DG.ConclusionsT1S was involved in the occurrence and development of cervical disc degeneration, and TIA could be considered as a constant morphological parameter in both the normal population and cervical disc degeneration patients.Electronic supplementary materialThe online version of this article (10.1186/s12891-018-1951-8) contains supplementary material, which is available to authorized users.

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Section: Discussionsupporting

confidence: 79%

Characteristics of cervical sagittal parameters in healthy cervical spine adults and patients with cervical disc degeneration

Rong

Liu

et al. 2018

BMC Musculoskelet Disord

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“…The changes in T1 vertebral body orientation and shape will greatly affect the cervical sagittal alignment. Previous studies [ 9 , 11 ] have measured the sagittal parameters of the cervical spine on x-ray. However, because of the occlusion of the shoulders, especially in obese people, the upper edge of the sternum and T1 vertebral body cannot be identified on most x-ray films.…”

Section: Discussionmentioning

confidence: 99%

Magnetic resonance imaging

et al. 2017

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Background and Objectives:Convincing evidence supporting the use of magnetic resonance imaging (MRI) as an effective tool for evaluating cervical sagittal alignment is lacking. This study aims to analyze the differences and correlations between cervical sagittal parameters on x-ray and MRI in patients with cervical disc herniation and to determine whether MRI could substitute for cervical x-ray for measurement of cervical sagittal parameters.Methods:One hundred forty-three adults with cervical disc herniation were recruited. Each patient had both an x-ray and MRI examination of the cervical spine. The cervical sagittal parameters were measured and compared on x-ray and MRI including: C2–C7 Cobb angle, C2–C7 sagittal vertical axis (C2–C7 SVA), cervical tilt (CT), T1 Slope (T1S), and neck tilt (NT). The data were analyzed using a paired-samples t test, a Pearson correlation test, and linear regression.Results:The values of C2–C7 Cobb angle, C2–C7 SVA, CT and T1S on X-ray were larger than those on MRI (P < .05) and NT on X-ray was smaller than that on MRI (P < .05). Each of the cervical sagittal parameters had a significant correlation with the corresponding one on MRI (r = 0.699, 0.585, 0.574, 0.579 and 0.613, respectively) (C2–C7 Cobb MRI = 0.957 + 0.721 C2–C7 Cobb X, C2–C7 SVA MRI = 6.423 + 0.500 C2–C7 SVAX, CT MRI = 3.121 + 0.718 CTX, T1S MRI = 7.416 + 0.613 T1SX, NT MRI = 22.548 + 0.601 NTX).Conclusion:Although MRI and x-ray measurements of cervical sagittal parameters were different, there were significant correlations between the results. MRI could be used to evaluate the sagittal balance of the cervical spine with great reliability.

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“…According to Janusz et al, 7 the average TIA, T1 slope, and neck tilt values are 71.7 ± 9.5, 26.7 ± 6.3, and 44.9 ± 7.2, respectively.…”

Section: Discussionmentioning

confidence: 90%

Parameters for the Evaluation of Cervical Sagittal Balance in Idiopathic Scoliosis

et al. 2017

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Objective: There are no values defined as standard in the literature for the parameters of assessment of cervical sagittal balance in patients with idiopathic scoliosis. This study describes the sagittal cervical parameters in patients with idiopathic scoliosis. Methods: Study carried out in a tertiary public hospital in patients with adolescent idiopathic scoliosis, through the evaluation of panoramic radiographs in lateral view. The Cobb method was used to evaluate cervical lordosis from C2 to C7, distance from the center of gravity (COG) of the skull to C7, measurement of T1 slope, thoracic inlet angle (TIA), neck tilt, and plumb line from C7 to S1 (SVA C7-S1). A statistical analysis was performed, to demonstrate the relationship between the alignment of the thoracic spine in the sagittal plane and the cervical sagittal balance of patients with scoliosis. Results: Thirty-four patients were female (69.4%) and 15 male (30.6%). The mean values for COG-C7 were 0.71 mm (median 0.8 mm/standard deviation [SD]= 0.51 mm). For Cobb C2-C7, the mean was -11.7° (median -10°/SD= 20.4°). The mean slope of T1 was 23.5° (median 25°/ SD= 9.5°). The mean cervical version was 58.8° (median 60°/DP= 15.4°). The mean TIA was 81.8° (median 85°/SD= 16.7°). The mean plumb line C7-S1 was -0.28 (-0.3/SD= 1.0) Conclusion: The analysis of the results showed that the mean values for the cervical lordosis are lower than the values described as normal in the literature, suggesting a loss of sagittal cervical balance in these patients.Keywords: Scoliosis; Postural balance; Spine. 3/DP= 1,0 3/DE= 1,0 RESUMO 6%). A média dos valores para COG-C7 foi 0,71 mm (mediana 0,8 mm/desvio padrão [DP]= 0,51 mm). Para o Cobb de C2-C7, a média foi -11,7° (mediana -10°/DP= 20,4°). A média da inclinação de T1 foi 23,5° (mediana 25°/DP= 9,5°). A média da versão cervical foi 58,8° (mediana 60°/DP= 15,4°). A média do TIA foi 81,8°(mediana 85°/DP= 16,7°). A média da linha de prumo

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Influence of cervical spine position on the radiographic parameters of the thoracic inlet alignment

Cited by 37 publications

References 18 publications

Characteristics of cervical sagittal parameters in healthy cervical spine adults and patients with cervical disc degeneration

Characteristics of cervical sagittal parameters in healthy cervical spine adults and patients with cervical disc degeneration

Magnetic resonance imaging

Parameters for the Evaluation of Cervical Sagittal Balance in Idiopathic Scoliosis

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