Lumbar spine angles and intervertebral disc characteristics with end-range positions in three planes of motion in healthy people using upright MRI

Berry, David B.; Hernandez, Alejandra C.; Onodera, Keenan; Ingram, Noah; Ward, Samuel R.; Gombatto, Sara P.

doi:10.1016/j.jbiomech.2019.04.020

Cited by 21 publications

(14 citation statements)

References 53 publications

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“…anteflexed sitting [20], upright sitting [20,21], seated flexion [21,22], seated right and left axial rotation [21], reclined and forward inclined sitting [23]. An overview of the included studies' and subjects' characteristics is presented in Table 1.…”

Section: Resultsmentioning

confidence: 99%

“…2018 [16] evaluated subjects on a common natural sitting position comparing it with conventional standing lateral and/or sagittal radiographies. Few studies included more seated position variants in their analysis; namely erect sitting [17] , floor sitting [16 , 18] , sitting on a kneeling chair, sitting on a chair with back support, sitting on 90° angled chair, sitting on chair with anterior support, sitting on stool, sitting cross-legged [19] , kneel sitting [16] , anteflexed sitting [20] , upright sitting [20 , 21] , seated flexion [21 , 22] , seated right and left axial rotation [21] , reclined and forward inclined sitting [23] . An overview of the included studies' and subjects' characteristics is presented in Table 1 .…”

Section: Resultsmentioning

confidence: 99%

“…Sitting leads to a retroversion of the pelvis [20] , but lumbopelvic mobility appears poor among the elderly [25] . The realignment of the spine in sitting position leads to greater loading towards the intervertebral discs (IVDs) [28] , translocating the nucleus pulposus posteriorly [21] . Details regarding the changes in spinal alignment are presented in Table 2 .…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

The sitting vs standing spine

Tsagkaris,

Widmer,

Wanivenhaus

et al. 2022

North American Spine Society Journal (NASSJ)

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

The sitting vs standing spine

Tsagkaris,

Widmer,

Wanivenhaus

et al. 2022

North American Spine Society Journal (NASSJ)

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“…However, exposure to ionizing radiation poses health risks and is not ethical for use in a healthy population. More recently, other imaging modalities including fluoroscopy and Magnetic resonance imaging (MRI) have demonstrated acceptable measurements of motion [4,5,6]. Limitations of these imaging techniques are that the equipment of a bi-planar fluoroscopy system and standing MRI devices are extremely costly and are unlikely to be used for larger clinical studies.…”

Section: Introductionmentioning

confidence: 99%

Assessment of spinal curvatures in static postures using localized 3D ultrasound: A proof-of-concept study

Meszaros-Beller¹,

Antico²,

Fontanarosa³

et al. 2022

Preprint

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<div>Measurement of vertebral spinal motion is a difficult endeavor given the lack of reachable bony landmarks for placement of reflective markers for common optoelectronic systems and large skin movement artifacts along the spine affecting the accuracy of surface-mounted techniques. The objective of this proof-of-concept study was to develop an experimental framework to assess spinal curvatures with high accuracy by using ultrasound (US) imaging. A phantom spine model (T1-T12) immersed in water was scanned using both Magnetic resonance imaging (MRI) and three dimensional (3D) US. The US scans were obtained for the phantom spine in different postures while the US probe was localized by three electromagnetic tracking sensors (NDI system) attached to the probe head and later identified on the acquired US volumes via visual inspection. Spinal landmarks were selected on the US images and validated using US-MRI registration. Their position was then related to the position of the tracking sensors, enabling the precise localization of landmarks and reconstruction of spinal curvatures in a global reference frame. The obtained anatomical reconstructions were further refined using an automatic registration algorithm and validated by an experienced sonographer (ground-truth solution). Results of this study show that localized 3D US enables tracking of spinal landmarks and allows for an accurate reconstruction of static postures. A high reliability in sensor identification of 0.49 mm was found on average while the inter-observer variability was strongly correlated to the intra-observer error with maximum deviance of 0.8 mm. The NDI-based spine reconstruction had a mean error of 5.6 mm compared to the ground-truth, which is significantly lower than errors obtained by current gold standards (>10 mm). Combining US probe tracking and semi-automatic registration methods anatomical reconstructions comparable to clinical standards were obtained. This study implies that US holds the potential for advancing vertebral motion assessment and the reconstruction of spinal curvatures. In future, this could overcome limitations of marker-based approaches.</div>

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“…Radiography is a foremost technique for the examination of the body organs like joints, injured bones, and spines [9] and is helpful to examine the morphological characteristics of body part or organs for diagnosis purposes of orthopedics [10]. The magnetic resonance imaging [11] uses the radio waves, strong magnetic fields and magnetic field gradients to generate images of the spine with clear visualization [12]. A Computerized Tomography scan (CT scan) is the combination of computers and rotating X-ray machines to generate the crosssectional images of the body parts such as bones, soft tissues, blood vessels, etc.…”

Section: Introductionmentioning

confidence: 99%

3D modeling of human spine and the cobb angle measurement in scoliosis patients

Yang¹,

Baqir²,

Kashif³

et al. 2021

J Clin Images Med Case Rep

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Scoliosis is a disease caused by the abnormal curvature of spine. Generally, curvature above 10 degrees is considered as a scoliosis. About 2-4% of the world population is affected by this disease. Therefore, there is a need for such a tool that can help surgeons and bioengineers to study the behavior of a spine under various conditions. Considering the engineering perspectives, it is necessary to understand the fundamental anatomy of the human spine and pathological techniques associated with the orthopedic conditions, so that better technologies can be implemented. The main objective of this work is to develop a 3D model that can simulate various orthopedic conditions associated with the change in Cobb angle. CT scans of patients are obtained from the Spine center of G. hospital, Lahore. 3D Models of actual patients are created using 3D Slicer and Radiant software. Only spine portions are extracted to understand the type of scoliosis, curvature region, and Cobb angles. The cobb angle of each of the patients is measured using Solid Works software. Considering the real data of patients, the severity level of scoliosis in the patients is discussed. Keywords: anthropometry; Cobb angles; CT scans; scoliosis; Spine deformity; vertebra.

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Lumbar spine angles and intervertebral disc characteristics with end-range positions in three planes of motion in healthy people using upright MRI

Cited by 21 publications

References 53 publications

The sitting vs standing spine

The sitting vs standing spine

Assessment of spinal curvatures in static postures using localized 3D ultrasound: A proof-of-concept study

3D modeling of human spine and the cobb angle measurement in scoliosis patients

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