cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.6179390.v1
title: THE “PENDULUM LAW” - HOW TO EXPLAIN THE SPINAL SHAPE? PART I

description: ABSTRACT The author uses the classical parameters that allow studying the sagittal form of the spine, following a vertebral semantics (lordosis, kyphosis, spinopelvic parameters, and sagittal balance). Then he proposes a very different perspective that analyzes the shape of the column, not in the sagittal-coronal plane but in the vertical plane, that is, integrating gravity as a three-dimensional construction axis. Beginning with an analysis of the global body scheme of which the column is part, the muscular synergies are introduced using reference points, defining tension lines, anatomical and functional arches, highlighting the importance of the respiratory function that stabilizes the shape of the thoracolumbar spine. This shows that, whatever the pelvic or frequent anomalies, the biomechanical scheme depends on a single unique law related to gravity: the “pendulum law”. This allows us to define an ideal shaped spine, in comparison to different models, evoking the semantic practical and therapeutic interest of such a perspective.
DOI: 10.6084/m9.figshare.6179390
title: THE “PENDULUM LAW” - HOW TO EXPLAIN THE SPINAL SHAPE? PART I

description: ABSTRACT The author uses the classical parameters that allow studying the sagittal form of the spine, following a vertebral semantics (lordosis, kyphosis, spinopelvic parameters, and sagittal balance). Then he proposes a very different perspective that analyzes the shape of the column, not in the sagittal-coronal plane but in the vertical plane, that is, integrating gravity as a three-dimensional construction axis. Beginning with an analysis of the global body scheme of which the column is part, the muscular synergies are introduced using reference points, defining tension lines, anatomical and functional arches, highlighting the importance of the respiratory function that stabilizes the shape of the thoracolumbar spine. This shows that, whatever the pelvic or frequent anomalies, the biomechanical scheme depends on a single unique law related to gravity: the “pendulum law”. This allows us to define an ideal shaped spine, in comparison to different models, evoking the semantic practical and therapeutic interest of such a perspective.
DOI: 10.6084/m9.figshare.6179531.v1
title: THE “PENDULUM LAW” - HOW TO EXPLAIN THE COLUMN SHAPE BASED ON COMMON ANOMALIES? PART II

description: ABSTRACT In Part I, the author defines an organizational law of the body schema: the “pendulum law”, describing an ideal biomechanical structure of the spine. Thus, he shows how the common variations and anomalies, whether isolated or associated, modify the standard biomechanical scheme. The variations of isolated “curl/roll up” of the sacrum. Anomalies of the lumbosacral joint in the sagittal (LSS) and/or rotational (LSR) plan. Anomalies of stabilization of the capsule of the hip joint and the sacro-diaphyseal angle. Specific anomalies with grade 1 spondylolysis (SL). Segmental anomalies of the vertebral discs in flexion (Rx). Associated anomalies (SL + Rx + ASL= Rx). The interest of studying the impact on the vertical construction of the vertebral column, according to the “ideal” scheme is to establish the physiological limits of this gravitational law, to identify the anomalies, to classify schemes and types, and the biomechanical degenerative consequences.
DOI: 10.6084/m9.figshare.6179531
title: THE “PENDULUM LAW” - HOW TO EXPLAIN THE COLUMN SHAPE BASED ON COMMON ANOMALIES? PART II

description: ABSTRACT In Part I, the author defines an organizational law of the body schema: the “pendulum law”, describing an ideal biomechanical structure of the spine. Thus, he shows how the common variations and anomalies, whether isolated or associated, modify the standard biomechanical scheme. The variations of isolated “curl/roll up” of the sacrum. Anomalies of the lumbosacral joint in the sagittal (LSS) and/or rotational (LSR) plan. Anomalies of stabilization of the capsule of the hip joint and the sacro-diaphyseal angle. Specific anomalies with grade 1 spondylolysis (SL). Segmental anomalies of the vertebral discs in flexion (Rx). Associated anomalies (SL + Rx + ASL= Rx). The interest of studying the impact on the vertical construction of the vertebral column, according to the “ideal” scheme is to establish the physiological limits of this gravitational law, to identify the anomalies, to classify schemes and types, and the biomechanical degenerative consequences.
DOI: 10.6084/m9.figshare.6179522
title: EPIDEMIOLOGY OF SPINAL TRAUMA SURGICALLY TREATED AT THE UNICAMP HOSPITAL DAS CLÍNICAS

description: ABSTRACT Objective: To report the epidemiological profile of patients operated for treatment of spinal trauma in the UNICAMP Hospital das Clínicas. Methods: Patients older than 14 years with spinal trauma operated in the service from 2012 to 2017 with complete radiological and clinical data were evaluated. Results: A total of 143 patients were included, 120 men and 23 women, with a mean age of 37.8 years. Falls from height (32%), motorcycle (26%) and car accidents (24%) were the most common trauma mechanisms. The most affected vertebral level was C6 (11%) and most patients (55%) had some neurological deficits. The overall postoperative complication rate was 23%. Conclusions: Spinal trauma has a high socioeconomic impact due to its high morbidity and mortality, and it is necessary to study its epidemiology for the development of public policies for prevention and treatment financing. Level of Evidence: III. Type of study: Retrospective study.
DOI: 10.6084/m9.figshare.6179522.v1
title: EPIDEMIOLOGY OF SPINAL TRAUMA SURGICALLY TREATED AT THE UNICAMP HOSPITAL DAS CLÍNICAS

description: ABSTRACT Objective: To report the epidemiological profile of patients operated for treatment of spinal trauma in the UNICAMP Hospital das Clínicas. Methods: Patients older than 14 years with spinal trauma operated in the service from 2012 to 2017 with complete radiological and clinical data were evaluated. Results: A total of 143 patients were included, 120 men and 23 women, with a mean age of 37.8 years. Falls from height (32%), motorcycle (26%) and car accidents (24%) were the most common trauma mechanisms. The most affected vertebral level was C6 (11%) and most patients (55%) had some neurological deficits. The overall postoperative complication rate was 23%. Conclusions: Spinal trauma has a high socioeconomic impact due to its high morbidity and mortality, and it is necessary to study its epidemiology for the development of public policies for prevention and treatment financing. Level of Evidence: III. Type of study: Retrospective study.
DOI: 10.7294/19969019
title: Groundwater volume change time series over San Joaquin Valley California associated with Journal of Geophysical Research: Solid Earth Publication: Groundwater Loss and Aquifer System Compaction in San Joaquin Valley During 2012–2015 Drought by Ojha et al. 2019

description: This dataset contains time series of accumulated groundwater volume changes based on 1-D poroelastic model applying GPS vertical land motion observations over San Joaquin Valley, California, from October 2011 to September 2015. Details of the processing are provided in the publication of Ojha et al. (2019): C. Ojha, S. Werth, M. Shirzaei, Groundwater Loss and Aquifer System Compaction in San Joaquin Valley During 2012–2015 Drought. J. Geophys. Res. Solid Earth. 124, 3127–3143 (2019). Data provided in the file GPSbasedGWVchange_Fig8_JGR_Ojha_etal_2019.csv is a time series of GPS-based monthly accumulated groundwater volume changes and 1-sigma error, as shown in Figure 8 of Ojha et al. (2019). Unit is km<sup>3</sup>. The files three columns contain time (column 1, in decimal year), groundwater volume change (column 2, in km<sup>3</sup>) and 1-sigma error (column 3, in km<sup>3</sup>). <br>
DOI: 10.7294/19969019.v1
title: Groundwater volume change time series over San Joaquin Valley California associated with Journal of Geophysical Research: Solid Earth Publication: Groundwater Loss and Aquifer System Compaction in San Joaquin Valley During 2012–2015 Drought by Ojha et al. 2019

description: This dataset contains time series of accumulated groundwater volume changes based on 1-D poroelastic model applying GPS vertical land motion observations over San Joaquin Valley, California, from October 2011 to September 2015. Details of the processing are provided in the publication of Ojha et al. (2019): C. Ojha, S. Werth, M. Shirzaei, Groundwater Loss and Aquifer System Compaction in San Joaquin Valley During 2012–2015 Drought. J. Geophys. Res. Solid Earth. 124, 3127–3143 (2019). Data provided in the file GPSbasedGWVchange_Fig8_JGR_Ojha_etal_2019.csv is a time series of GPS-based monthly accumulated groundwater volume changes and 1-sigma error, as shown in Figure 8 of Ojha et al. (2019). Unit is km<sup>3</sup>. The files three columns contain time (column 1, in decimal year), groundwater volume change (column 2, in km<sup>3</sup>) and 1-sigma error (column 3, in km<sup>3</sup>). <br>
DOI: 10.6084/m9.figshare.20014073
title: SAGITTAL BALANCE IN ADOLESCENT IDIOPATHIC SCOLIOSIS

description: ABSTRACT Objective The objective of this study is to achieve a better understanding of the parameters that influence sagittal balance in a population with adolescent idiopathic scoliosis (AIS). Methods A retrospective study of 80 patients with adolescent idiopathic scoliosis (AIS) was conducted. The parameters evaluated were: age, sex, pelvic incidence (PI), sacral slop (SS), pelvic tilt (PT), sagittal balance (SB), coronal balance (CB), lumbar lordosis (LL), thoracic kyphosis (TK) divided into upper (between T1 and T5) and lower (between T5 and T12), cervical spine alignment (CSA), and Cobb’s coronal angle (CCA) of primary scoliotic curvature. Results Regarding the sagittal balance, this study demonstrated a significant statistical positive correlation with cervical shape (p&lt;0.01) and upper thoracic kyphosis (from T1 to T5) (p&lt;0.05), but not with the other variables. LL had a strong influence on lower thoracic curvature (from T5 to T12) and was strongly influenced by the PI and SS. Conclusions Sagittal balance is a parameter that is influenced by multiple factors. In fact, it is closely related to cervical shape and the upper thoracic curvature (from T1 to T5), which in turn, is closely linked to the severity of the scoliotic kyphosis. The Cobb angle of the lower thoracic spine (from T5 to T12) is more closely correlated with the angle of lumbar lordosis than with the upper thoracic kyphosis (from T1 to T5). Level of evidence IV; Case Series.
DOI: 10.6084/m9.figshare.20014073.v1
title: SAGITTAL BALANCE IN ADOLESCENT IDIOPATHIC SCOLIOSIS

description: ABSTRACT Objective The objective of this study is to achieve a better understanding of the parameters that influence sagittal balance in a population with adolescent idiopathic scoliosis (AIS). Methods A retrospective study of 80 patients with adolescent idiopathic scoliosis (AIS) was conducted. The parameters evaluated were: age, sex, pelvic incidence (PI), sacral slop (SS), pelvic tilt (PT), sagittal balance (SB), coronal balance (CB), lumbar lordosis (LL), thoracic kyphosis (TK) divided into upper (between T1 and T5) and lower (between T5 and T12), cervical spine alignment (CSA), and Cobb’s coronal angle (CCA) of primary scoliotic curvature. Results Regarding the sagittal balance, this study demonstrated a significant statistical positive correlation with cervical shape (p&lt;0.01) and upper thoracic kyphosis (from T1 to T5) (p&lt;0.05), but not with the other variables. LL had a strong influence on lower thoracic curvature (from T5 to T12) and was strongly influenced by the PI and SS. Conclusions Sagittal balance is a parameter that is influenced by multiple factors. In fact, it is closely related to cervical shape and the upper thoracic curvature (from T1 to T5), which in turn, is closely linked to the severity of the scoliotic kyphosis. The Cobb angle of the lower thoracic spine (from T5 to T12) is more closely correlated with the angle of lumbar lordosis than with the upper thoracic kyphosis (from T1 to T5). Level of evidence IV; Case Series.
DOI: 10.6084/m9.figshare.20014075.v1
title: EXPERIMENTAL STUDY OF THE NEUROTOXIC EFFECTS OF PHOTODYNAMIC THERAPY ON THE SPINAL CORD

description: ABSTRACT Objective To evaluate the effects of photodynamic therapy (PDT) on the dura mater using the photosensitizers aluminum chloride phthalocyanine and methylene blue in in vivo assays. Methods Fifty-six male Wistar rats were divided into two groups; one submitted to PDT and the other submitted to the photosensitizers without their photoactivation (control). The photosensitizers were applied to the dura mater after laminectomy at the T10 level. The methods used for assessment were the Basso, Beattie and Bresnahan (BBB) functional evaluation scale and study of the dura mater by light microscopy. Results No changes in motor activity were observed in the animals submitted to PDT compared to control. Histological and pathological evaluation did not show any differences between the group exposed to activated photosensitizers and the control group with regard to the inflammatory process and tissue necrosis. Conclusion The joint use of PDT with the photosensitizing pharmaceuticals aluminum chloride phthalocyanine and methylene blue did not induce any clinical neurotoxic effects or histological changes in the dura mater of the animals studied. Level de evidence V; Expert Opnion.
DOI: 10.6084/m9.figshare.20014075
title: EXPERIMENTAL STUDY OF THE NEUROTOXIC EFFECTS OF PHOTODYNAMIC THERAPY ON THE SPINAL CORD

description: ABSTRACT Objective To evaluate the effects of photodynamic therapy (PDT) on the dura mater using the photosensitizers aluminum chloride phthalocyanine and methylene blue in in vivo assays. Methods Fifty-six male Wistar rats were divided into two groups; one submitted to PDT and the other submitted to the photosensitizers without their photoactivation (control). The photosensitizers were applied to the dura mater after laminectomy at the T10 level. The methods used for assessment were the Basso, Beattie and Bresnahan (BBB) functional evaluation scale and study of the dura mater by light microscopy. Results No changes in motor activity were observed in the animals submitted to PDT compared to control. Histological and pathological evaluation did not show any differences between the group exposed to activated photosensitizers and the control group with regard to the inflammatory process and tissue necrosis. Conclusion The joint use of PDT with the photosensitizing pharmaceuticals aluminum chloride phthalocyanine and methylene blue did not induce any clinical neurotoxic effects or histological changes in the dura mater of the animals studied. Level de evidence V; Expert Opnion.
DOI: 10.6084/m9.figshare.20014078
title: LEG LENGTH DISCREPANCY IN ADOLESCENT IDIOPATHIC SCOLIOSIS

description: ABSTRACT Objective The objective of this study is to evaluate leg length discrepancy in adolescent idiopathic scoliosis. Methods A retrospective study of 80 subjects with adolescent idiopathic scoliosis (AIS) was conducted. The inclusion criteria were patients aged 10 to 18 years old with posteroanterior (PA) and lateral full-length radiographs. The exclusion criteria were patients subjected to surgery or orthotic treatment, those with other spinal disease, and those with poor quality x-rays. The parameters evaluated were: age, sex, Risser stage (RS), triradiate cartilage (TC), scoliotic curvatures, differentiated according to Lenke classification, sagittal (SB) and coronal balance (CB), and leg length discrepancy, which was assessed through the difference between the femoral heads (LLD) and through the assessment of pelvic obliquity (PO). Results The majority of patients with AIS demonstrated a mild LLD (&lt;1 cm). The mean LLD was significantly different (p&lt;0.01) between the scoliotic population with a main thoracolumbar curvature and those with a main lumbar curvature. When there was an LLD, it was the left limb that was shortened in most cases. The side of the longer lower limb had a direct influence on the CB (p=0.052). Conclusions This study demonstrates that in an AIS population with small LLD values, the extent of the shortening has a stronger impact on coronal balance and location than on the dimension of the main scoliotic curvature. These results demonstrate the importance of a more in-depth study on the effects of LLD &lt;1 cm in the development of AIS and coronal imbalance. Level of evidence IV; Case Series.
DOI: 10.6084/m9.figshare.20014078.v1
title: LEG LENGTH DISCREPANCY IN ADOLESCENT IDIOPATHIC SCOLIOSIS

description: ABSTRACT Objective The objective of this study is to evaluate leg length discrepancy in adolescent idiopathic scoliosis. Methods A retrospective study of 80 subjects with adolescent idiopathic scoliosis (AIS) was conducted. The inclusion criteria were patients aged 10 to 18 years old with posteroanterior (PA) and lateral full-length radiographs. The exclusion criteria were patients subjected to surgery or orthotic treatment, those with other spinal disease, and those with poor quality x-rays. The parameters evaluated were: age, sex, Risser stage (RS), triradiate cartilage (TC), scoliotic curvatures, differentiated according to Lenke classification, sagittal (SB) and coronal balance (CB), and leg length discrepancy, which was assessed through the difference between the femoral heads (LLD) and through the assessment of pelvic obliquity (PO). Results The majority of patients with AIS demonstrated a mild LLD (&lt;1 cm). The mean LLD was significantly different (p&lt;0.01) between the scoliotic population with a main thoracolumbar curvature and those with a main lumbar curvature. When there was an LLD, it was the left limb that was shortened in most cases. The side of the longer lower limb had a direct influence on the CB (p=0.052). Conclusions This study demonstrates that in an AIS population with small LLD values, the extent of the shortening has a stronger impact on coronal balance and location than on the dimension of the main scoliotic curvature. These results demonstrate the importance of a more in-depth study on the effects of LLD &lt;1 cm in the development of AIS and coronal imbalance. Level of evidence IV; Case Series.
DOI: 10.6084/m9.figshare.20014079
title: CORRECTION OF SEVERE DYSTROPHIC SCOLIOSIS IN NEUROFIBROMATOSIS 1 WITH POSTERIOR VERTEBRAL COLUMN RESECTION IN MULTIPLE LEVELS

description: ABSTRACT Objective To evaluate the results after multiple posterior vertebral column resection (PVCR) in patients with severe kyphoscoliosis secondary to neurofibromatosis type 1 (NF-1). Methods Retrospective study of 4 adult male patients, mean age of 26.5 years, with severe rigid deformity, mean kyphosis of 122º and scoliosis of 88º, through clinical analysis and complementary exams. Results The mean postoperative follow-up was 27 months. Three vertebrae were resected on average. Interbody consolidation of arthrodesis was confirmed by CT in all cases. The correction rates of sagittal and coronal deformities were 54.09% and 70.45%, respectively. Prior to surgery, all patients were neurologically intact and as a post-surgical complication one patient had motor deficit (ASIA D) and pneumothorax also occurred in two patients. Conclusions The correction of severe kyphoscoliosis in adult patients with NF-1 is technically demanding and is not free of major complications. However, in view of the limited possibility of correction of these deformities, multiple-level PVCR has proved to be a safe and effective technique. Level of evidence IV; Case Series.
DOI: 10.6084/m9.figshare.20014079.v1
title: CORRECTION OF SEVERE DYSTROPHIC SCOLIOSIS IN NEUROFIBROMATOSIS 1 WITH POSTERIOR VERTEBRAL COLUMN RESECTION IN MULTIPLE LEVELS

description: ABSTRACT Objective To evaluate the results after multiple posterior vertebral column resection (PVCR) in patients with severe kyphoscoliosis secondary to neurofibromatosis type 1 (NF-1). Methods Retrospective study of 4 adult male patients, mean age of 26.5 years, with severe rigid deformity, mean kyphosis of 122º and scoliosis of 88º, through clinical analysis and complementary exams. Results The mean postoperative follow-up was 27 months. Three vertebrae were resected on average. Interbody consolidation of arthrodesis was confirmed by CT in all cases. The correction rates of sagittal and coronal deformities were 54.09% and 70.45%, respectively. Prior to surgery, all patients were neurologically intact and as a post-surgical complication one patient had motor deficit (ASIA D) and pneumothorax also occurred in two patients. Conclusions The correction of severe kyphoscoliosis in adult patients with NF-1 is technically demanding and is not free of major complications. However, in view of the limited possibility of correction of these deformities, multiple-level PVCR has proved to be a safe and effective technique. Level of evidence IV; Case Series.
DOI: 10.6084/m9.figshare.20014081
title: THE IMPORTANCE OF CLAVICLE ANGLE AND HEIGHT OF THE CORACOID PROCESS IN IDIOPATHIC SCOLIOSIS

description: ABSTRACT Objective The aim of this study was to correlate the parameters of shoulder alignment with the Cobb angle value of the proximal thoracic curve in the pre and postoperative periods. Methods A retrospective data collection study was carried out, in which 30 medical records and radiographic examinations of patients submitted to surgical treatment for correction of deformity in AIS were performed in a single center from 2010 to 2017. Results The risk of CHD&gt; 3 mm at 1 year postoperatively was similar between patients who had high thoracic curve (HTC) less than or equal to 25 degrees and those who had HTC greater than 25 degrees and not structured (relative risk = 1.75, P-value = 0.552). The risk of presenting CA&gt; 2 degrees in the postoperative period of 1 year was similar between patients having HTC less than or equal to 25 degrees and those who had HTC greater than 25 degrees and not structured (relative risk = 1.31, P-value = 0.567). Conclusions We observed that when the proximal thoracic curve is not structured, even with a high Cobb angle, there is no need for instrumentation, presenting a satisfactory shoulder alignment in the postoperative period . Level of Evidence III; Retrospective and Comparative.
DOI: 10.6084/m9.figshare.20014081.v1
title: THE IMPORTANCE OF CLAVICLE ANGLE AND HEIGHT OF THE CORACOID PROCESS IN IDIOPATHIC SCOLIOSIS

description: ABSTRACT Objective The aim of this study was to correlate the parameters of shoulder alignment with the Cobb angle value of the proximal thoracic curve in the pre and postoperative periods. Methods A retrospective data collection study was carried out, in which 30 medical records and radiographic examinations of patients submitted to surgical treatment for correction of deformity in AIS were performed in a single center from 2010 to 2017. Results The risk of CHD&gt; 3 mm at 1 year postoperatively was similar between patients who had high thoracic curve (HTC) less than or equal to 25 degrees and those who had HTC greater than 25 degrees and not structured (relative risk = 1.75, P-value = 0.552). The risk of presenting CA&gt; 2 degrees in the postoperative period of 1 year was similar between patients having HTC less than or equal to 25 degrees and those who had HTC greater than 25 degrees and not structured (relative risk = 1.31, P-value = 0.567). Conclusions We observed that when the proximal thoracic curve is not structured, even with a high Cobb angle, there is no need for instrumentation, presenting a satisfactory shoulder alignment in the postoperative period . Level of Evidence III; Retrospective and Comparative.