scholarly journals Risk factors for screw loosening in patients with adult degenerative scoliosis: the importance of paraspinal muscle degeneration

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Wei Wang ◽  
Weishi Li ◽  
Zhongqiang Chen
Keyword(s):  
Risk Factors ◽  
Cross Sectional Area ◽  
Erector Spinae ◽  
Paraspinal Muscle ◽  
Sectional Area ◽  
Muscle Degeneration ◽  
Screw Loosening ◽  
Degenerative Scoliosis ◽  
Cross Sectional ◽  
Adult Degenerative Scoliosis

Abstract Background Paraspinal muscle is an important component to maintain spinal stability. But the relationship between the degeneration of paraspinal muscle and postoperative screw loosening in patients with adult degenerative scoliosis has not been studied. The objective of this study was to investigate risk factors for screw loosening in patients with adult degenerative scoliosis, including paraspinal muscle degeneration. Methods We investigated 93 patients with adult degenerative scoliosis who underwent spinal interbody fusion and pedicle screw fixation surgery. The lateral curvature was located in the lumbar spine and the follow-up time was ≥ 2 years. The patients were divided into loosening and non-loosening groups. Screw loosening was defined as a 1-mm or wider circumferential radiolucent line around the pedicle screw. We checked the cross-sectional area of paraspinal muscles, spinopelvic parameters, bone mineral density, number of fusion segment, and other factors. The potential risk factors for screw loosening were investigated by using binary logistical regression analysis. Results Fifty-seven patients showed screw loosening, which is 63.4% of total. Compared with patients in the non-loosening group, the cross-sectional area of erector spinae and psoas major muscle at L5 level were significantly smaller in patients with screw loosening (P < 0.05). Among these factors, the number of fused segments and relative erector spinae total cross-sectional area were independent risk factors for screw loosening. Conclusions The degeneration of paraspinal muscle and the increase of fusion segment were independent factors for screw loosening in patients with adult degenerative scoliosis.

scholarly journals Longitudinal Analysis of Paraspinal Muscle Cross-Sectional Area During Early Adulthood – A 10-Year Follow-Up MRI Study

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Teemu Mäki ◽  
Petteri Oura ◽  
Markus Paananen ◽  
Jaakko Niinimäki ◽  
Jaro Karppinen ◽  
...  
Keyword(s):  
Early Adulthood ◽  
Population Based ◽  
Cross Sectional Area ◽  
Erector Spinae ◽  
Paraspinal Muscle ◽  
Muscle Size ◽  
Sectional Area ◽  
Muscle Area ◽  
Cross Sectional

AbstractOnly a few previous studies have investigated paraspinal musculature (i.e., multifidus (MF), psoas major (PSM), erector spinae (ES)) in longitudinal, population-based settings. This study aimed to evaluate changes in the cross-sectional area (CSA) of the paraspinal muscles between the ages of 20 and 30 years. The study population consisted of a sub-cohort from the Northern Finland Birth Cohort 1986 (n = 298; 156 men, 142 women). Baseline magnetic resonance imaging was performed at a mean age of 21.3 years and follow-up imaging at 30.6 years. The CSA measurements were performed by tracing the paraspinal muscle outlines individually (MF, ES, PM) and all combined (total muscle area (TMA)) at the L4 cranial endplate level. The longitudinal data analysis was performed using generalized estimating equations modelling. The CSA of MF and ES increased during the follow-up among both sexes (men: MF + 5.7%, p < 0.001; ES + 2.7%, p = 0.001; and women: MF + 10.5%, p < 0.001; ES 9.2%, p = 0.001). The CSA of PM decreased among men (PM −4.0%, p < 0.001) but not among women (PM + 0.5%, p = 0.553). TMA increased significantly only among women (men: +0.5%, p = 0.425; women: +6.5%, p < 0.001). The increases in ES and TMA were more distinct among women than men (p < 0.001). Our study demonstrated clear age- and sex-related changes in paraspinal muscle size in early adulthood.

scholarly journals Radiological Assessment of Postoperative Paraspinal Muscle Changes After Lumbar Interbody Fusion With or Without Minimally Invasive Techniques

2021 ◽  
pp. 219256822199479
Author(s):  
Keigo Kameyama ◽  
Tetsuro Ohba ◽  
Tomoka Endo ◽  
Marina Katsu ◽  
Fujita Koji ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Interbody Fusion ◽  
Cross Sectional Area ◽  
Paraspinal Muscle ◽  
Lumbar Interbody Fusion ◽  
Sectional Area ◽  
Paraspinal Muscles ◽  
Cross Sectional ◽  
Muscle Density ◽  
Muscle Changes

Study Design: Retrospective cohort study. Background: Percutaneous pedicle screws (PPS) have the advantage of being able to better preserve the paraspinal muscles when compared with a traditional open approach. However, the nature of changes in postoperative paraspinal muscle after damage by lumbar fusion surgery has remained largely unknown. It is clinically important to clarify and compare changes in paraspinal muscles after the various surgeries. Objective: (1) To determine postoperative changes of muscle density and cross-sectional area using computed tomography (CT), and (2) to compare paraspinal muscle changes after posterior lumbar interbody fusion (PLIF) with traditional open approaches and minimally invasive lateral lumbar interbody fusions (LLIF) with PPS. Methods: We included data from 39 consecutive female patients who underwent open PLIF and 23 consecutive patients who underwent single-staged treatment with LLIF followed by posterior PPS fixation at a single level (L4-5). All patients underwent preoperative, 6 months postoperative, and 1-year postoperative CT imaging. Measurements of the cross-sectional area (CSA) and muscle densities of paraspinal muscles were obtained using regions of interest defined by manual tracing. Results: We did not find any decrease of CSA in any paraspinal muscles. We did find a decrease of muscle density in the multifidus at 1 year after surgery in patients in the PILF group, but not in those in LLIF/PPS group. Conclusions: One year after surgery, a significant postoperative decrease of muscle density of the multifidi was observed only in patients who underwent open PLIF, but not in those who underwent LLIF/PPS.

scholarly journals Is there a correlation between upper lumbar disc herniation and multifidus muscle degeneration? A retrospective study of MRI morphology

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Chong Liu ◽  
Jiang Xue ◽  
Jingjing Liu ◽  
Gang Ma ◽  
Abu Moro ◽  
...  
Keyword(s):  
Lumbar Disc Herniation ◽  
Lumbar Disc ◽  
Fatty Infiltration ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Muscle Degeneration ◽  
Multifidus Muscle ◽  
Cross Sectional ◽  
Upper Lumbar Disc Herniation ◽  
Muscle Cross Sectional Area

Abstract Background The purpose of the study is to investigate the correlation between upper lumbar disc herniation (ULDH) and multifidus muscle degeneration via the comparison of width, the cross-sectional area and degree of fatty infiltration of the lumbar multifidus muscle. Methods Using the axial T2-weighted images of magnetic resonance imaging as an assessment tool, we retrospectively investigated 132 patients with ULDH and 132 healthy individuals. The total muscle cross-sectional area (TMCSA) and the pure muscle cross-sectional area (PMCSA) of the multifidus muscle at the L1/2, L2/3, and L3/4 intervertebral disc levels were measured respectively, and in the meantime, the average multifidus muscle width (AMMW) and degree of fatty infiltration of bilateral multifidus muscle were evaluated. The resulting data were analyzed to determine the presence/absence of statistical significance between the study and control groups. Multivariate logistical regression analyses were used to evaluate the correlation between ULDH and multifidus degeneration. Results The results of the analysis of the two groups showed that there were statistically significant differences (p < 0.05) between TMCSA, PMCSA, AMMW and degree of fatty infiltration. The multivariate logistic regression analysis indicated that the TMCSA, PMCSA, AMMW and the degree of fatty infiltration of multifidus muscle were correlated with ULDH, and the differences were statistically significant (P < 0.05). Conclusions A correlation could exist between multifidus muscles degeneration and ULDH, that may be a process of mutual influence and interaction. Lumbar muscle strengthening training could prevent and improve muscle atrophy and degeneration.

Prediction Models for the Erector Spinae Muscle Cross-Sectional Area

2015 ◽  
Vol 137 (7) ◽  
Author(s):  
Celal Gungor ◽  
Ruoliang Tang ◽  
Richard F. Sesek ◽  
Kenneth Bo Foreman ◽  
Sean Gallagher ◽  
...  
Keyword(s):  
Prediction Models ◽  
Absolute Error ◽  
Cross Sectional Area ◽  
Erector Spinae ◽  
Low Back ◽  
Sectional Area ◽  
Cross Sectional ◽  
Erector Spinae Muscle ◽  
Significant Difference ◽  
Mri Scans

Accurate and reliable “individualized” low back erector spinae muscle (ESM) data are of importance to estimate its force producing capacity. Knowing the force producing capacity, along with spinal loading, enhances the understanding of low back injury mechanisms. The objective of this study was to build regression models to estimate the ESM cross-sectional area (CSA). Measurements were taken from axial-oblique magnetic resonance imaging (MRI) scans of a large historical population [54 females and 53 males at L3/L4, 50 females and 44 males at L4/L5, and 41 females and 35 males at L5/S1 levels]. Results suggest that an individual's ESM CSA can be accurately estimated based on his/her gender, height, and weight. Results further show that there is no significant difference between the measured and estimated ESM CSAs, and expected absolute error is less than 15%.

Abstract 2539: Relationship of Aortic Wall Thickness and Distensibility with Subclinical Measures of Cardiovascular Disease: The Multi-Ethnic Study of Atherosclerosis

Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
Hossein Bahrami ◽  
Joao A Lima ◽  
Joseph F Polak ◽  
Gregory D Pearson ◽  
Kiang Liu ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cardiovascular Disease ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Cross Sectional ◽  
Carotid Imt ◽  
Lv Mass ◽  
Relationship Of ◽  
The Relationship ◽  
Subclinical Cvd

Background: While increased carotid intima-media thickness (IMT) is considered an independent risk factor for cardiovascular disease (CVD), little is known about the relationship of aortic thickness (AWT) and aortic distensibility (AD) with CVD risk factors. We studied the association of these aortic parameters with other measures of subclinical CVD. Methods: The Multi-Ethnic Study of Atherosclerosis (MESA) includes 6,814 participants, aged 45– 85 years; white, African-American, Hispanic, and Chinese. AD and AWT were measured by MRI. Average and maximum AWT of the proximal descending thoracic aorta were used as two measures of AWT. AD was calculated as the difference in aortic cross-sectional area indexed by diastolic cross-sectional area and average pulse pressure. IMT of the common and internal carotid arteries were determined by high-resolution B-mode ultrasonography and LV mass was determined by MRI. Phantom-adjusted Agatston calcium score from CT images was used to define coronary artery calcification (CAC). Results: In univariable analyses, higher carotid IMT, ankle-brachial index (ABI) <0.9, CAC score, LV mass, and presence of coronary calcium were associated with lower AD and higher AWT (table ). However, in multivariable analyses, the only measures of subclinical CVD that had significant associations with both AD and AWT were LV mass and carotid IMT, while ABI was associated with only AWT. After adding age to the models, CAC score was no longer associated with either AD or AWT. The relationship between CAC score and AD varied by ethnicity; higher CAC score was associated with higher AD only in African Americans. Conclusions: AD and AWT are related to carotid IMT and LV mass, even after controlling for traditional risk factors. The associations of AD and AWT with CAC appears to be mainly due to their relationship with conventional risk factors, particularly age. Overall, AWT and AD may have closer relationship with LV mass than with subclinical atherosclerosis.

Assessment of Paraspinal Muscle Cross-sectional Area After Lumbar Decompression

2017 ◽  
Vol 30 (3) ◽  
pp. E162-E168 ◽  
Author(s):  
Lacey E. Bresnahan ◽  
Justin S. Smith ◽  
Alfred T. Ogden ◽  
Steven Quinn ◽  
George R. Cybulski ◽  
...  
Keyword(s):  
Cross Sectional Area ◽  
Paraspinal Muscle ◽  
Sectional Area ◽  
Cross Sectional ◽  
Lumbar Decompression ◽  
Muscle Cross Sectional Area
Sign in / Sign up

Export Citation Format

Share Document