scholarly journals Are there direct relationships in canal dimension and canal-body ratio between cervical and lumbar spine?

2021 ◽  
Author(s):  
Jung-Hee Lee ◽  
Kyung-Chung Kang ◽  
Ki-Tack Kim ◽  
Yong-Chan Kim ◽  
Tae-Soo Chang
Keyword(s):  
Computed Tomography ◽  
Lumbar Spine ◽  
Lumbar Vertebrae ◽  
Cervical Canal ◽  
Canal Diameter ◽  
Gender And Age ◽  
Computed Tomography Scans ◽  
Male Patients ◽  
Highly Correlated ◽  
Lumbar Spinal

Abstract A known prevalence of concurrent cervical and lumbar spinal stenosis was shown to be 5%-25%, but there is a lack of evidence regarding direct relationships in canal dimension and canal-body ratio between cervical and lumbar spine. Total 247 patients (mean age: 61 years, male: 135) with cervical and lumbar computed tomography scans were retrospectively reviewed. Midsagittal vertebral body and canal diameters in reconstructed images were measured at all cervical and lumbar vertebrae, and canal-body ratios were calculated. The canal diameter and ratio were also compared according to the gender and age, and correlation analysis was performed for each value. There were significant correlations between cervical (C3-C7) and lumbar (L1-L5) canal dimension (p < .001). C5 canal diameter was most significantly correlated with L4 canal diameter (r = .435, p < .001). Cervical canal-body ratios (C3-C7) were also correlated with those of lumbar spine (L1-L5) (p < .001). The canal-body ratio of C3 was most highly correlated with L3 (r = 0.477, p < .001). Meanwhile, mean canal-body ratios of C3 and L3 were significantly smaller in male patients than female (p = .038 and p < .001) and patient’s age was inversely correlated with C5 canal diameter (r=-.223, p < .001) and C3 canal-body ratio (r=-.224, p < .001). Spinal canal dimension and canal-body ratio have direct relationships between cervical and lumbar spine. Physicians can explain that if the cervical canal is narrow, the lumbar canal is also likely to be narrow.

scholarly journals Extent and characteristic of relationships in canal dimension and canal body ratio between cervical and lumbar spine

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jung-Hee Lee ◽  
Kyung-Chung Kang ◽  
Ki-Tack Kim ◽  
Yong-Chan Kim ◽  
Tae-Soo Chang
Keyword(s):  
Lumbar Spine ◽  
Lumbar Vertebrae ◽  
The Elderly ◽  
Cervical Canal ◽  
Elderly Male ◽  
Canal Diameter ◽  
Male Patients ◽  
Highly Correlated ◽  
Lumbar Spinal ◽  
Relationship Of

AbstractA known prevalence of concurrent cervical and lumbar spinal stenosis was shown to be 5–25%, but there is a lack of evidence regarding direct relationships in canal dimension and canal-body ratio between cervical and lumbar spine. Total 247 patients (mean age: 61 years, male: 135) with cervical and lumbar computed tomography scans were retrospectively reviewed. Midsagittal vertebral body and canal diameters in reconstructed images were measured at all cervical and lumbar vertebrae, and canal-body ratios were calculated. The canal diameter and ratio were also compared according to the gender and age, and correlation analysis was performed for each value. There were significant correlations between cervical (C3–C7) and lumbar (L1–L5) canal dimension (p < 0.001). C5 canal diameter was most significantly correlated with L4 canal diameter (r = 0.435, p < 0.001). Cervical canal-body ratios (C3–C7) were also correlated with those of lumbar spine (L1–L5) (p < 0.001). The canal-body ratio of C3 was most highly correlated with L3 (r = 0.477, p < 0.001). Meanwhile, mean canal-body ratios of C3 and L3 were significantly smaller in male patients than female (p = 0.038 and p < 0.001) and patient’s age was inversely correlated with C5 canal diameter (r = − 0.223, p < 0.001) and C3 canal-body ratio (r = − 0.224, p < 0.001). Spinal canal dimension and canal-body ratio have moderate degrees of correlations between cervical and lumbar spine and the elderly male patients show the tendency of small canal diameter and canal-body ratio. This relationship of cervical and lumbar spine can be an important evidence to explain to the patients.

scholarly journals The nasopalatine canal and its relationship with the maxillary central incisors: a cone-beam computed tomography study

2021 ◽  
Vol 10 (15) ◽  
pp. e351101522978
Author(s):  
Ana Carolina Neves Melgaço de Lima ◽  
Dominique A. Peniche ◽  
Thais M. C. Coutinho ◽  
Fábio R. Guedes ◽  
Maria Augusta Visconti ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Average Diameter ◽  
Cone Beam ◽  
Nasopalatine Canal ◽  
Gender And Age ◽  
Post Test ◽  
Male Patients ◽  
And Gender ◽  
Student’S T

Objective: To evaluate the dimensions of the nasopalatine canal (NPC) and its relationship with the maxillary central incisors (MCI) using cone-beam computed tomography (CBCT) and to determine variations in the NPC in relation to age and gender. Methods: CBCT scans from 333 patients (67% female; 35.9 ± 14.6 years) were included. The CBCT scan was analyzed to determine the length and diameter of the NPC, the distance between the NPC and the MCI, and to evaluate the morphology of the NPC. The data were analyzed using the independent Student's t-test, the Mann–Whitney and Kruskal–Wallis tests, and Dunn's post-test (p < 0.05). Results: The average diameter and length of the NPC were 2.92 ± 0.91 mm and 12.67 ± 3.32 mm, respectively. The minimum and maximum distance between the MCI and the NPC were 0.78 ± 0.42 mm and 2.56 ± 1.38 mm, respectively. The NPC of male patients was greater in length compared with the female patients (p < 0.05). The majority presented a funnel-like morphology (34.1%), followed by a cylindrical morphology (27.5%). Conclusions: There was variability in the dimensions of the NPC and its relationship with the MCI, which was influenced by gender and age.

scholarly journals Union Rate on Hinge Side after Open-Door Laminoplasty Using Maxillofacial Titanium Miniplate

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Koopong Siribumrungwong ◽  
Theerasan Kiriratnikom ◽  
Boonsin Tangtrakulwanich
Keyword(s):  
Computed Tomography ◽  
Cervical Canal ◽  
Open Door ◽  
Union Rate ◽  
Japanese Orthopedic Association ◽  
Computed Tomography Scans ◽  
Before And After ◽  
The Mean ◽  
Scan Data ◽  
Titanium Miniplate

Background. One of the important complications of open-door laminoplasty is a premature laminoplasty closure. In order to prevent premature laminoplasty closure many techniques have been described and a titanium miniplate is one of the instruments to maintain cervical canal expansion. This study was performed to evaluate the effectiveness of titanium miniplates on the union rate for open-door laminoplasty.Materials and Methods. We performed open-door laminoplasty in 68 levels of fourteen patients using maxillofacial titanium miniplates. Axial computed tomography scans were obtained at 6 months postoperatively to evaluate the union rates of the hinge side. The Japanese Orthopedic Association (JOA) score was used to compare the clinical outcomes before and after surgery.Results. Computed tomography scan data was available on 68 levels in 14 patients. There were no premature closures of the hinge or miniplate dislodgements. The union rate on the hinge side was 70.5% (48/68). The mean JOA score increased significantly from 7.0 before surgery to 10.2, 12.2, and 13.0 after surgery at 1, 3, and 6 months, respectively.Conclusion. Open-door laminoplasty using maxillofacial titanium miniplates can provide union rates comparable to other techniques. It can maintain canal expansion without failures, dislodgements, and premature closures.

scholarly journals Lumbar Morphometry: A Study of Lumbar Vertebrae from a Pakistani Population Using Computed Tomography Scans

2014 ◽  
Vol 8 (4) ◽  
pp. 421 ◽  
Author(s):  
Muhammad M Alam ◽  
Muhammad Waqas ◽  
Hussain Shallwani ◽  
Gohar Javed
Keyword(s):  
Computed Tomography ◽  
Lumbar Vertebrae ◽  
Pakistani Population ◽  
Computed Tomography Scans

scholarly journals Evaluating the Consistency, Repeatability, and Reproducibility of Osteometric Data on Dry Bone Surfaces, Scanned Dry Bone Surfaces, and Scanned Bone Surfaces Obtained from Living Individuals

2016 ◽  
Vol 29 (1-2) ◽  
pp. 33-53 ◽  
Author(s):  
L. Corron ◽  
F. Marchal ◽  
S. Condemi ◽  
K. Chaumoître ◽  
P. Adalian
Keyword(s):  
Computed Tomography ◽  
Statistical Tests ◽  
Intraclass Correlation ◽  
Lumbar Vertebrae ◽  
Correlation Coefficients ◽  
Intraclass Correlation Coefficients ◽  
Reconstructed Surfaces ◽  
Computed Tomography Scans ◽  
Repeatability And Reproducibility ◽  
Dry Bone

Applying dry bone osteometrics to virtual bone surfaces obtained via medical imaging raises the question of consistency between the variables. Variables obtained from virtual bone surfaces also need to be sufficiently repeatable and reproducible to be valid for anthropological studies. This is also true for the landmarks defining these variables and for their acquisition. The consistency between variables taken directly from dry bones and from the virtual surfaces of dry bones was tested on 40 clavicles. 30 virtual surfaces of iliae, fifth lumbar vertebrae, and clavicles reconstructed from computed tomography scans of living individuals were used to test the repeatability and reproducibility of 16 landmarks and 19 variables. Statistical tests, graphical and quantitative error evaluations, and intraclass correlation coefficients were applied. The differences between all variables taken on dry and virtual clavicles were less than ±1 mm. Bland–Altman plots showed more than 95% reliability between variables obtained on dry bone and their virtually reconstructed surfaces, confirming their consistency and thus validating their use in osteometric studies independently of the medium of study. Although not all landmarks were repeatable and reproducible, most variables were. To assess intra- or inter-observer errors, graphical representations or coefficients are more precise and accurate than statistical tests. These two evaluation methods should be given priority to test the repeatability and reproducibility of osteometric variables.

scholarly journals Can Mental Index be used on CBCT images to determine sexual dimorphism?

2020 ◽  
Vol 68 ◽  
Author(s):  
Ana Luiza Esteves CARNEIRO ◽  
Sabrina Evelyn Santos MACIEL ◽  
Daniela Miranda Richarte de Andrade SALGADO ◽  
Jéssica Rabelo Mina ZAMBRANA ◽  
Nataly Rabelo Mina ZAMBRANA ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Sexual Dimorphism ◽  
Cone Beam ◽  
Quantitative Index ◽  
Men And Women ◽  
Tomographic Images ◽  
Gender And Age ◽  
Male Patients ◽  
Level Of Significance ◽  
Examiner Agreement

ABSTRACT Objective: Radiomorphometric indices (RI) vary according to gender and age. The objective of this study was to assess bone quality in men and women, using tomographic images Methods: A total of 78 Cone Beam Computed Tomography (CBCT) images of female and male patients were analyzed. The images were obtained from LAPI-FOUSP database, São Paulo, Brazil, and the Mental Index, which is a quantitative index, was evaluated on those images. The images were divided into 2 groups: Group M – Men and Group W – Women and evaluated by one examiner in two different times (T1 and T2). The data was submitted to a statistical analysis with a 95% level of significance (p <0.05) Results: The ICC tests showed an average to good intra-examiner agreement. The age averages were: 48.46 ± 15.3 for group W and 53.87 ± 13.09 for group M. On the MI evaluation, statistically significant differences were observed between the two groups Conclusion: We concluded that MI can be used to determine sexual dimorphism, once the thickness of the mandible cortex in women is smaller than the thickness found in men.

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