Relationship between bodyweight and spinopelvic alignment in Chinese adult people: A pilot study

Abstract Background The purpose of this study is to evaluate the correlation between spinal alignment and the obesity parameters in healthy Chinese adult volunteers.Methods This pilot study included 100 Chinese healthy adult volunteers, 36 males and 64 females. The obesity parameters measured were BMI, waist circumference (WC), sagittal abdominal diameter (SAD), transverse abdominal diameter (TAD) and RR (the ratio of SAD to TAD). The sagittal spinopelvic parameters included pelvic incidence (PI), pelvic tilt (PT), pelvic angulation (PA), sacral slope (SS), sacral inclination (SI), lumbar lordosis (LL) and the disc angle of L5/S1. The coronal spinopelvic parameters included the Cobb angel of the major curve of the spine, lumbar scoliosis (LS) and pelvic obliquity (PO).Results The mean BMI of the males and females was 28.7 ± 3.7 kg/m2 and 26.8 ± 2.3 kg/m2 respectively; mean WC, 88.39 ± 9 cm and 82.6 ± 2.7 cm respectively. In the females, strong correlation was found between BMI and PI, WC and PT, and WC and PI. In the males, no strong correlation was found between the obesity and spinopelvic alignment parameters. RR showed a positive linear correlation with PA and PT in both groups. None of the coronal spinopelvic parameters showed a correlation with the obesity parameters in either group.Conclusions BMI and WC had a strong influence on some spinopelvic parameters, but only in females. In individuals with abdominal obesity, the sagittal spinopelvic alignment is likely to change, however there is little effect on the coronal spinopelvic.

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Relationship between bodyweight and spinopelvic alignment in Chinese adult people: A pilot study

10.21203/rs.2.14664/v2 ◽

2020 ◽

Author(s):

QingXi Zhang ◽

FuQiang Gao ◽

YunTing Wang ◽

ZiRong Li ◽

Ozaki Koji ◽

...

Keyword(s):

Pilot Study ◽

Strong Correlation ◽

Sacral Slope ◽

Spinopelvic Parameters ◽

Sagittal Abdominal Diameter ◽

Spinopelvic Alignment ◽

Chinese Adult ◽

Positive Linear Correlation ◽

Males And Females ◽

Adult Volunteers

Abstract Background: With the increase of people in obesity, which may affect the alignment of spinopelvic, we designed this study. The purpose of this study is to evaluate the correlation between spinal alignment and the bodyweight parameters in healthy Chinese adult volunteers. That has not been systematically studied yet. Methods: This pilot study included 100 Chinese healthy adult volunteers (36 males and 64 females) who were grouped according to gender. The obesity parameters measured were body mass index (BMI), waist circumference (WC) , sagittal abdominal diameter (SAD), transverse abdominal diameter (TAD) and RR (the ratio of SAD to TAD). The sagittal spinopelvic parameters included Anchorpelvic incidence (PI), pelvic tilt (PT), pelvic angulation (PA), sacral slope (SS), sacral inclination (SI), lumbar lordosis (LL) and the disc angle of L5/S1. The coronal spinopelvic parameters included the Cobb angel of the major curve of the spine, lumbar scoliosis (LS) and pelvic obliquity (PO). Pearson’s correlation analysis was used. Results: The mean BMI of the males and females was 28.7 ± 3.7 kg/m2 and 26.8 ± 2.3 kg/m2 respectively; mean WC, 88.39 ± 9 cm and 82.6 ± 2.7 cm respectively. In the females, strong correlation was found between BMI and PI, WC and PT, and WC and PI. In the males, no strong correlation was found between the obesity and spinopelvic alignment parameters. RR showed a positive linear correlation with PA and PT in both groups. None of the coronal spinopelvic parameters showed a correlation with the obesity parameters in either group. Conclusions: BMI and WC had a strong influence on some spinopelvic parameters, especially in females. In individuals with abdominal obesity, the sagittal spinopelvic alignment is likely to change, but there is little effect on the coronal spinopelvic alignment.

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Relationship between body weight and spinopelvic alignment in Chinese adult people: A preliminary study

10.21203/rs.3.rs-21234/v1 ◽

2020 ◽

Author(s):

Qing Xi Zhang ◽

Fu Qiang Gao ◽

Yun Ting Wang ◽

Zi Rong Li ◽

Ozaki Koji ◽

...

Keyword(s):

Body Weight ◽

Strong Correlation ◽

The Body ◽

Sacral Slope ◽

Female Group ◽

Spinopelvic Parameters ◽

Sagittal Abdominal Diameter ◽

Spinopelvic Alignment ◽

Chinese Adult ◽

Adult Volunteers

Abstract Background: The purpose of this study is to evaluate the correlation between spinopelvicalignment and the body weight parameters in healthy Chinese adult volunteers. That has not been systematically studied yet. Methods: 100 Chinese healthy adult volunteers (36 males and 64 females) were included in this study, which grouped according to the gender. The obesity parameters, body mass index (BMI), waist circumference (WC), sagittal abdominal diameter (SAD), transverse abdominal diameter (TAD) and RR (the ratio of SAD to TAD) were measured. The sagittal spinopelvic parameters include pelvic incidence (PI), pelvic tilt (PT), pelvic angulation (PA), sacral slope (SS), sacral inclination (SI), lumbar lordosis (LL) and the disc angle of L5/S1. The coronal spinopelvic parameters include the Cobb angle of the major curve of the spine, lumbar scoliosis (LS) and pelvic obliquity (PO). Pearson's correlation analysis was used to determine correlations between obesity index and spinopelvic alignment parameters. Results: The mean BMI and WC of the males and females was 28.7 ± 3.7 kg/m2 vs 26.8 ± 2.3 kg/m2 and 88.39 ± 9 cm vs 82.6 ± 2.7 cm respectively. In the female group, a strong correlation was found between BMI and PI, WC and PT, WC and PI. However, there was no strong correlation between the obesity and spinopelvic alignment parameters in the male group. None of the coronal spinopelvic parameters showed a correlation with the obesity parameters in two groups. The RR showed a positive linear correlation with PA and PT in both groups. Conclusions: Body weight could influence the spinopelvic alignment,especially for females. People with abdominal obesity, the sagittal spinopelvic alignment is likely to change. But there is little effect on the coronal spinopelvic alignment.

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Sagittal Spinopelvic Alignment in Asymptomatic Iranian Adults Aged 18 to 40 Years

Archives of Iranian Medicine ◽

10.34172/aim.2020.32 ◽

2020 ◽

Vol 23 (6) ◽

pp. 391-396

Author(s):

Ali Yeganeh ◽

Mehdi Moghtadaei ◽

Ebrahim Ameri Mahabadi ◽

Seyed Mani Mahdavi ◽

Ahmad Pirani ◽

...

Keyword(s):

Thoracic Kyphosis ◽

Iranian Population ◽

Sacral Slope ◽

X Rays ◽

Spinopelvic Parameters ◽

Mean Values ◽

Spinopelvic Alignment ◽

Musculoskeletal Problems ◽

Males And Females ◽

The Mean

Background: Recent studies have revealed the increasing importance of sagittal spinopelvic alignment. Knowing the values of sagittal spinopelvic parameters, which are affected by ethnicity, is essential in the normal asymptomatic population. In the current study, these parameters were measured in a sample of asymptomatic Iranian population. Methods: Seventy asymptomatic participants without complaint of musculoskeletal problems were enrolled. They had no complaint about musculoskeletal problems. Lateral full-length spinal and pelvic x–rays were taken. The following parameters were measured on x-rays and presented as mean ± standard deviation: pelvic incidence (PI), sacral slope (SS), pelvic tilt (PT), lumbar lordosis (LL), thoracic kyphosis (TK), lumbar tilt (LT) and thoracic tilt (TT). Results: The population consisted of 37 males and 33 females aged 26.6 ± 4.27 years. The mean values of PI, SS, PT, LL, TK, LT, and TT were 44.5 ± 10.1, 35.4 ± 6.7, 9.1 ± 7.9, 41.9 ± 14.7, 28.8 ± 8.3, 11.9 ± 7.4 and –7.5 ± 5.7 (median: –10; 5th percentile: –14; 95th percentile: 4.4) degrees, respectively. The variables were similar between males and females except for LL which was significantly higher in females (37.8 ± 16.5 versus 46.5 ± 11; P = 0.013). In addition, the linear regression model revealed age to be independently related with PI (beta = 0.344; P = 0.004) and PT (beta = 0.366; P = 0.002). PI (r = 0.344, P = 0.004) and PT (r = 0.359, P = 0.002) were positively correlated with age. Additionally, PI was positively correlated to SS, PT and LL and negatively to TT. Conclusion: These findings may be used as referential values for sagittal spinopelvic parameters in the Iranian population. The positive correlation of PI with age questions the constancy of PI throughout life. However, larger studies are required.

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Implications of Spinopelvic Alignment for the Spine Surgeon

Neurosurgery ◽

10.1227/neu.0b013e31823262ea ◽

2011 ◽

Vol 70 (3) ◽

pp. 707-721 ◽

Cited By ~ 55

Author(s):

Vivek A. Mehta ◽

Anubhav Amin ◽

Ibrahim Omeis ◽

Ziya L. Gokaslan ◽

Oren N. Gottfried

Keyword(s):

Sagittal Balance ◽

Lumbar Lordosis ◽

Pelvic Incidence ◽

Degenerative Spondylolisthesis ◽

Disease Process ◽

Sacral Slope ◽

Sagittal Imbalance ◽

Spinopelvic Parameters ◽

Spinopelvic Alignment ◽

Spinopelvic Balance

Abstract The relation of the pelvis to the spine has previously been overlooked as a contributor to sagittal balance. However, it is now recognized that spinopelvic alignment is important to maintain an energy-efficient posture in normal and disease states. The pelvis is characterized by an important anatomic landmark, the pelvic incidence (PI). The PI does not change after adolescence, and it directly influences pelvic alignment, including the parameters of pelvic tilt (PT) and sacral slope (SS) (PI = PT 1 SS), overall sagittal spinal balance, and lumbar lordosis. In the setting of an elevated PI, the spineadapts with increased lumbar lordosis. To prevent or limit sagittal imbalance, the spine may also compensate with increased PT or pelvic retroversion to attempt to maintain anupright posture. Abnormal spinopelvic parameters contribute to multiple spinal conditions including isthmic spondylolysis, degenerative spondylolisthesis, deformity, and impact outcome after spinal fusion. Sagittal balance, pelvic incidence, and all spinopelvic parameters are easily and reliably measured on standing, full-spine (lateral) radiographs, and it is essential to accurately assess and measure these sagittal values to understand their potential role in the disease process, and to promote spinopelvic balance at surgery. In this article, we provide a comprehensive review of the literature regarding the implications of abnormal spinopelvic parameters and discuss surgical strategies for correction of sagittal balance. Additionally, the authors rate and critique the quality of the literature cited in a systematic review approach to give the reader an estimate of the veracity of the conclusions reached from these reports.

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Implications of Spinopelvic Alignment for the Spine Surgeon

Neurosurgery ◽

10.1227/01.neu.0000462077.50830.1a ◽

2011 ◽

Vol 76 (suppl_1) ◽

pp. S42-S56 ◽

Cited By ~ 29

Author(s):

Vivek A. Mehta ◽

Anubhav Amin ◽

Ibrahim Omeis ◽

Ziya L. Gokaslan ◽

Oren N. Gottfried

Keyword(s):

Sagittal Balance ◽

Lumbar Lordosis ◽

Pelvic Incidence ◽

Degenerative Spondylolisthesis ◽

Disease Process ◽

Sacral Slope ◽

Sagittal Imbalance ◽

Spinopelvic Parameters ◽

Spinopelvic Alignment ◽

Spinopelvic Balance

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The effect of pedicle subtraction osteotomy for the correction of severe Scheuermann thoracolumbar kyphosis on sagittal spinopelvic alignment

BMC Musculoskeletal Disorders ◽

10.1186/s12891-020-03942-7 ◽

2021 ◽

Vol 22 (1) ◽

Author(s):

Guanfeng Lin ◽

Shengru Wang ◽

Yang Yang ◽

Zhe Su ◽

You Du ◽

...

Keyword(s):

Pedicle Screw ◽

Pedicle Subtraction Osteotomy ◽

Sacral Slope ◽

Thoracolumbar Kyphosis ◽

Spinopelvic Parameters ◽

Pedicle Screw Instrumentation ◽

Spinopelvic Alignment ◽

Significant Difference ◽

Post Operation

Abstract Purpose To analyze how pedicle subtraction osteotomy (PSO) treatment of severe Scheuermann thoracolumbar kyphosis (STLK) using pedicle screw instrumentation affects sagittal spinopelvic parameters. Background The medical literature on the post-surgical effects of treatments such as Ponte osteotomy is limited, but suggests few effects on spinopelvic profiles. Currently, there is no research regarding changes in sagittal spinopelvic alignment upon PSO treatment in STLK patients. Methods We performed a retrospective study on 11 patients with severe STLK. These patients underwent posterior-only correction surgeries with PSO and pedicle screw instrumentation between 2012 to 2017 in a single institute. Patients were measured for the following spinopelvic parameters: global kyphosis (GK), thoracic kyphosis (TK), thoracolumbar kyphosis (TL), lumbar lordosis (LL), sagittal vertical axis (SVA), pelvic incidence (PI), pelvic tile (PT), sacral slope (SS), and administered a Scoliosis Research Society-22 questionnaire (SRS-22) pre-operation, post-operation and at final follow-up. Results GK improved from a median of 74.1° to 40.0° after surgery, achieving a correction rate of 48.8% with a median correction loss of 0.8°. TK, TL and LL all showed significant difference (P < 0.05) and SVA improved 22.7 (11.6, 30.9) mm post operation. No significant difference was found in pelvic parameters (PI, PT, SS, all P < 0.05). The absolute value of LL- PI significantly improved from a median of 26.5° pre-operation to 6.1° at the final follow-up. 72.7% in this series showed an evident trend of thoracic and lumbar apices migrating closer to ideal physiological segments after surgery. Self-reported scores of pain, self-image, and mental health from SRS-22 revealed significant improvement at final follow-up (all P < 0.05). Conclusions PSO treatment of severe STLK with pedicle screw instrumentation can improve spine alignment and help obtain a proper alignment of the spine and the pelvis.

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TORACOLOMBAR BURST FRACTURES AND SPINOPELVIC BALANCE

Coluna/Columna ◽

10.1590/s1808-185120201902223843 ◽

2020 ◽

Vol 19 (2) ◽

pp. 133-136

Author(s):

DANIEL COSTA ◽

OSMAR AVANZI ◽

MARIA FERNANDA SILBER CAFFARO ◽

ALBERTO GOTFRYD ◽

NELSON ASTUR ◽

...

Keyword(s):

Lumbar Lordosis ◽

Sacral Slope ◽

Spinopelvic Parameters ◽

Level Of Evidence ◽

Thoracolumbar Burst Fractures ◽

Spinopelvic Alignment ◽

Burst Fractures ◽

Spinopelvic Balance ◽

Sagittal Parameters

ABSTRACT Objective To describe the spinopelvic parameters in patients with conservatively treated thoracolumbar burst fractures. Methods Twenty-six patients with thoracolumbar burst fractures treated conservatively between 2008 and 2017 participated in the study. Inclusion criteria were acute burst-type fractures, located between T11 and L2, which compromised a single vertebral segment, did not present a neurological deficit, and had a minimum of 6 months of follow-up, excluding injuries that presented distraction or rotation, pathological fractures, and surgically treated cases. The sagittal and spinopelvic alignment parameters, including vertical sagittal axis, sacral slope, pelvic tilt, pelvic incidence, lumbar lordosis, and regional kyphosis, were analyzed. Results The values obtained for the sample showed that there was an increase in regional kyphosis and that the mean sagittal parameters and lumbar lordosis were within the values considered normal in the literature. Conclusion Patients with thoracolumbar burst fractures treated conservatively had no alterations in the spinopelvic parameters. Level of Evidence II; Retrospective study.

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SPINOPELVIC ALIGNMENT OF PATIENTS WITH DEGENERATIVE SPONDYLOLISTHESIS

Neurosurgery ◽

10.1227/01.neu.0000303194.02921.30 ◽

2007 ◽

Vol 61 (5) ◽

pp. 981-986 ◽

Cited By ~ 102

Author(s):

Cédric Barrey ◽

Jérôme Jund ◽

Gilles Perrin ◽

Pierre Roussouly

Keyword(s):

Lumbar Spine ◽

Lumbar Lordosis ◽

Pelvic Incidence ◽

Degenerative Spondylolisthesis ◽

Plumb Line ◽

Control Group ◽

Sacral Slope ◽

Spinopelvic Parameters ◽

Spinopelvic Alignment ◽

Asymptomatic Volunteers

Abstract OBJECTIVE The main objectives of this study were to analyze and compare spinopelvic parameters, including the pelvis shape, in a population of 40 patients with degenerative spondylolisthesis (DSPL) and to compare these patients with a control group of asymptomatic volunteers. METHODS Forty patients with DSPL were included in this study. Spinopelvic parameters were analyzed on preoperative full spine x-rays in a standardized standing position. The following spinopelvic parameters were measured: pelvic incidence (PI), sacral slope, pelvic tilt, lumbar lordosis, thoracic kyphosis, and positioning of the C7 plumb line. The population of patients was compared with a control population of 154 normal and asymptomatic adults who were studied in a recently published study. In order to understand variations of spinopelvic parameters, a control group was matched according to the PI, which is a morphological parameter. RESULTS The PI was significantly greater for patients with DSPL (60.1 ± 10.6 degrees) compared with the control group (52 ± 10.7 degrees) (P < 0.0005). After matching according to the pelvic incidence, the DSPL population was characterized by an anterior translation of the C7 plumb line (P < 0.05), a loss of lumbar lordosis (P < 0.0005), and a decrease of the sacral slope (P < 0.0005). Retrolisthesis and/or segmental intervertebral hyperextension were observed in the upper lumbar spine in 30% of the cases. CONCLUSION Matching according to the PI between the patients in the study and the control group enabled us to understand variations of the spinopelvic parameters in a population of patients with DSPL. DSPL patients were characterized by a greater PI than the asymptomatic population; therefore, we suggest that a high PI may be a predisposing factor in developing DSPL. Finally, we observed significant variations in spinopelvic alignment, such as loss of lordosis and sagittal unbalance, which were partially compensated by pelvis back tilt and hyperextension in the upper lumbar spine.

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Do I Shoot Faster Because I Am Thinking about an Outgroup or a Threatening Outgroup?

Social Psychology ◽

10.1027/1864-9335/a000255 ◽

2016 ◽

Vol 47 (1) ◽

pp. 29-37 ◽

Cited By ~ 6

Author(s):

Jessica Mange ◽

Keren Sharvit ◽

Nicolas Margas ◽

Cécile Sénémeaud

Keyword(s):

Pilot Study ◽

Target Group ◽

Main Study ◽

Priming Effects ◽

Males And Females

Abstract. This research examines if aggressive responses through a shooter bias are systematically generated by priming outgroups or if a threat stereotypically associated with the primed outgroup is required. First, a pilot study identified outgroups stereotypically associated and not associated with threat. Afterwards, the main study included a manipulation of target group accessibility – ingroup versus nonthreatening outgroup versus threatening outgroup. Following exposure to primes of the group categories, the participants in all conditions played a shooter game in which the targets were males and females with ambiguous ethnicity and religion. Results demonstrated that while only priming of an outgroup stereotypically associated with threat elicits aggressive responses, priming of both nonthreatening and threatening outgroups leads to an increase in the ability to distinguish between stimuli compared to ingroup priming. These effects are discussed in terms of priming effects, dimensions of threat, and possible interpretations of this ability increase.

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