scholarly journals The fatty degeneration of the lumbar erector spinae muscles affects dynamic spinal compensation ability during gait in adult spinal deformity

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kousei Miura ◽  
Hideki Kadone ◽  
Tomoyuki Asada ◽  
Masao Koda ◽  
Toru Funayama ◽  
...  
Keyword(s):  
Spinal Deformity ◽  
Adult Spinal Deformity ◽  
Qualitative Evaluation ◽  
Infiltration Rate ◽  
Fatty Degeneration ◽  
Erector Spinae ◽  
Fat Infiltration ◽  
3D Motion Analysis ◽  
Paravertebral Muscles ◽  
Psoas Major

AbstractThis study aimed to investigate whether fat infiltration in lumbar paravertebral muscles assessed by magnetic resonance imaging (MRI) could be related to dynamic sagittal spino-pelvic balance during gait in adult spinal deformity (ASD). This is a retrospective analysis of 28 patients with ASD. The fat infiltration rate of lumbar erector spinae muscles, multifidus muscles and psoas major muscles was measured by T2 weighted axial MRI at L1-2 and L4-5. Dynamic sagittal spinal and pelvic angles during gait were evaluated using 3D motion analysis. The correlation between fat infiltration rate of those muscles with variations in dynamic kinematic variables while walking and static radiological parameters was analyzed. Spinal kyphosis and pelvic anteversion significantly increased during gait. Fat infiltration rate of erector spinae muscles at L1-2 was positively correlated with thoracic kyphosis (r = 0.392, p = 0.039) and pelvic tilt (r = 0.415, p = 0.028). Increase of spinal kyphosis during walking was positively correlated with fat infiltration rate of erector spinae muscles both at L1-2 (r = 0.394, p = 0.038) and L4-5 (r = 0.428, p = 0.023). Qualitative evaluation of lumbar erector spinae muscles assessed by fat infiltration rate has the potential to reflect dynamic spino-pelvic balance during gait.

scholarly journals The Fatty Degeneration of the Lumbar Erector Spinae Muscles Affects Dynamic Spinal Compensation Ability During Gait in Adult Spinal Deformity

2021 ◽  
Author(s):  
Kousei Miura ◽  
Hideki Kadone ◽  
Tomoyuki Asada ◽  
Masao Koda ◽  
Toru Funayama ◽  
...  
Keyword(s):  
Spinal Deformity ◽  
Thoracic Kyphosis ◽  
Adult Spinal Deformity ◽  
Qualitative Evaluation ◽  
Infiltration Rate ◽  
Fatty Degeneration ◽  
Erector Spinae ◽  
Fat Infiltration ◽  
3D Motion Analysis ◽  
Magnetic Resonance Imaging Mri

Abstract This study aimed to investigate whether fat infiltration in lumbar back muscles assessed by magnetic resonance imaging (MRI) could be related to dynamic sagittal spino-pelvic balance during gait in adult spinal deformity (ASD). This is a retrospective analysis of 28 patients with ASD. The fat infiltration rate of lumbar erector spinae muscles and multifidus muscles was measured by T2 weighted axial MRI at L1-2 and L4-5. Dynamic sagittal spinal and pelvic angles during gait were evaluated using 3D motion analysis. The correlation between fat infiltration rate of those muscles with variations in dynamic kinematic variables while walking and static radiological parameters was analyzed. Spinal kyphosis and pelvic anteversion significantly increased during gait. Fat infiltration rate of erector spinae muscles at L1-2 was positively correlated with thoracic kyphosis (r=0.392, p=0.039) and pelvic tilt (r=0.415, p=0.028). Increase of spinal kyphosis during walking was positively correlated with fat infiltration rate of erector spinae muscles both at L1-2 (r=0.394, p=0.038) and L4-5 (r=0.428, p=0.023). Qualitative evaluation of lumbar erector spinae muscles assessed by fat infiltration rate has the potential to reflect dynamic spino-pelvic balance during gait.

scholarly journals Association of Lumbar Paraspinal Muscle Morphometry with Degenerative Spondylolisthesis

2021 ◽  
Vol 18 (8) ◽  
pp. 4037
Author(s):  
Eun Taek Lee ◽  
Seung Ah Lee ◽  
Yunsoo Soh ◽  
Myung Chul Yoo ◽  
Jun Ho Lee ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Protective Factor ◽  
Degenerative Spondylolisthesis ◽  
Fatty Degeneration ◽  
Erector Spinae ◽  
Cross Sectional ◽  
Skeletal Muscle Index ◽  
Fat Infiltration ◽  
Degenerative Lumbar Spondylolisthesis ◽  
Lumbar Spondylolisthesis

The objective of this study was to assess the cross-sectional areas (CSA) of lumbar paraspinal muscles and their fatty degeneration in adults with degenerative lumbar spondylolisthesis (DLS) diagnosed with chronic radiculopathy, compare them with those of the same age- and sex-related groups with radiculopathy, and evaluate their correlations and the changes observed on magnetic resonance imaging (MRI). This retrospective study included 62 female patients aged 65–85 years, who were diagnosed with lumbar polyradiculopathy. The patients were divided into two groups: 30 patients with spondylolisthesis and 32 patients without spondylolisthesis. We calculated the CSA and fatty degeneration of the erector spinae (ES) and multifidus (MF) on axial T2-weighted magnetic resonance (MR) images from the inferior end plate of the L4 vertebral body levels. The functional CSA (FCSA): CSA ratio, skeletal muscle index (SMI), and MF CSA: ES CSA ratio were calculated and compared between the two groups using an independent t-test. We performed logistic regression analysis using spondylolisthesis as the dependent variable and SMI, FCSA, rFCSA, fat infiltration rate as independent variables. The result showed more fat infiltration of MF in patients with DLS (56.33 vs. 44.66%; p = 0.001). The mean FCSA (783.33 vs. 666.22 mm2; p = 0.028) of ES muscle was a statistically larger in the patients with DLS. The ES FCSA / total CSA was an independent predictor of lumbar spondylolisthesis (odd ratio =1.092, p = 0.016), while the MF FCSA / total CSA was an independent protective factor (odd ratio =0.898, p = 0.002)

scholarly journals Relationship between Displacement of the Psoas Major Muscle and Spinal Alignment in Patients with Adult Spinal Deformity

2018 ◽  
Vol 12 (2) ◽  
pp. 335-342
Author(s):  
Yoshiaki Oda ◽  
Tomoyuki Takigawa ◽  
Ryo Ugawa ◽  
Yasuyuki Shiozaki ◽  
Haruo Misawa ◽  
...  
Keyword(s):  
Cobb Angle ◽  
Spinal Deformity ◽  
Lateral Displacement ◽  
Adult Spinal Deformity ◽  
Convex Side ◽  
Spinal Alignment ◽  
Radiographic Parameters ◽  
Psoas Major Muscle ◽  
The Difference ◽  
Psoas Major

<sec><title>Study Design</title><p>Cross sectional study.</p></sec><sec><title>Purpose</title><p>To clarify the difference in position of the psoas muscle between adult spinal deformity (ASD) and lumbar spinal stenosis (LSS).</p></sec><sec><title>Overview of Literature</title><p>Although it is known that the psoas major muscle deviates in ASD patients, no report is available regarding the difference in comparison with LSS patients.</p></sec><sec><title>Methods</title><p>This study investigates 39 patients. For evaluating spinal alignment, pelvic tilt (PT), pelvic incidence (PI), sacral slope, lumbar lordosis (LL), PI–LL, Cobb angle, and the convex side, the lumbar curves were measured. For measuring the position of the psoas major at the L4/5 disk level, magnetic resonance imaging was used. The displacements of psoas major muscle were measured separately in the anterior–posterior and lateral directions. We examined the relationship between the radiographic parameters and anterior displacement (AD) and lateral displacement (LD) of the psoas major muscle.</p></sec><sec><title>Results</title><p>AD was demonstrated in 15 cases with ASD and nine cases with LSS (<italic>p</italic>&gt;0.05). LD was observed in 13 cases with ASD and no cases with LSS (<italic>p</italic>&lt;0.01). The Cobb angle was significantly greater in cases with AD than in those without AD (<italic>p</italic>=0.04). PT, LL, PI–LL, and Cobb angle were significantly greater in cases with LD (<italic>p</italic>&lt;0.05). All cases with LD had AD, but no case without AD had LD (<italic>p</italic>&lt;0.001). The side of greater displacement at L4/5 and the convex side of the lumbar curve were consistent in all cases.</p></sec><sec><title>Conclusions</title><p>Despite AD being observed in LSS as well, LD was observed only in the ASD group. Radiographic parameters were worse when LD was seen, rather than AD.</p></sec>

Assessment of the Cross-Sectional Areas of the Psoas Major and Multifidus Muscles in Patients With Adult Spinal Deformity

2017 ◽  
Vol 30 (7) ◽  
pp. E968-E973 ◽  
Author(s):  
Tomohiro Banno ◽  
Yu Yamato ◽  
Tomohiko Hasegawa ◽  
Sho Kobayashi ◽  
Daisuke Togawa ◽  
...  
Keyword(s):  
Spinal Deformity ◽  
Adult Spinal Deformity ◽  
Cross Sectional ◽  
The Cross ◽  
Psoas Major

Perioperative outcomes associated with thoracolumbar 3-column osteotomies for adult spinal deformity patients with rheumatoid arthritis

2019 ◽  
Vol 30 (6) ◽  
pp. 822-832
Author(s):  
Cecilia L. Dalle Ore ◽  
Christopher P. Ames ◽  
Vedat Deviren ◽  
Darryl Lau
Keyword(s):  
Rheumatoid Arthritis ◽  
Spinal Deformity ◽  
Perioperative Complications ◽  
Adult Spinal Deformity ◽  
Vena Cava ◽  
Deformity Correction ◽  
Perioperative Outcomes ◽  
Medical Complications ◽  
Filter Placement ◽  
Estimated Blood Loss

OBJECTIVESpinal deformity causing spinal imbalance is directly correlated to pain and disability. Prior studies suggest adult spinal deformity (ASD) patients with rheumatoid arthritis (RA) have more complex deformities and are at higher risk for complications. In this study the authors compared outcomes of ASD patients with RA following thoracolumbar 3-column osteotomies to outcomes of a matched control cohort.METHODSAll patients with RA who underwent 3-column osteotomy for thoracolumbar deformity correction performed by the senior author from 2006 to 2016 were identified retrospectively. A cohort of patients without RA who underwent 3-column osteotomies for deformity correction was matched based on multiple clinical factors. Data regarding demographics and surgical approach, along with endpoints including perioperative outcomes, reoperations, and incidence of proximal junctional kyphosis (PJK) were reviewed. Univariate analyses were used to compare patients with RA to matched controls.RESULTSEighteen ASD patients with RA were identified, and a matched cohort of 217 patients was generated. With regard to patients with RA, 11.1% were male and the mean age was 68.1 years. Vertebral column resection (VCR) was performed in 22.2% and pedicle subtraction osteotomy (PSO) in 77.8% of patients. Mean case length was 324.4 minutes and estimated blood loss (EBL) was 2053.6 ml. Complications were observed in 38.9% of patients with RA and 29.0% of patients without RA (p = 0.380), with a trend toward increased medical complications (38.9% vs 21.2%, p = 0.084). Patients with RA had a significantly higher incidence of deep vein thrombosis (DVT)/pulmonary embolism (PE) (11.1% vs 1.8%, p = 0.017) and wound infections (16.7% vs 5.1%, p = 0.046). PJK occurred in 16.7% of patients with RA, and 33.3% of RA patients underwent reoperation. Incidence rates of PJK and reoperation in matched controls were 12.9% and 25.3%, respectively (p = 0.373, p = 0.458). At follow-up, mean sagittal vertical axis (SVA) was 6.1 cm in patients with RA and 4.5 cm in matched controls (p = 0.206).CONCLUSIONSFindings from this study suggest that RA patients experience a higher incidence of medical complications, specifically DVT/PE. Preoperative lower-extremity ultrasounds, inferior vena cava (IVC) filter placement, and/or early initiation of DVT prophylaxis in RA patients may be indicated. Perioperative complications, morbidity, and long-term outcomes are otherwise similar to non-RA patients.

Development and validation of risk stratification models for adult spinal deformity surgery

2019 ◽  
Vol 31 (4) ◽  
pp. 587-599 ◽  
Author(s):  
Ferran Pellisé ◽  
Miquel Serra-Burriel ◽  
Justin S. Smith ◽  
Sleiman Haddad ◽  
Michael P. Kelly ◽  
...  
Keyword(s):  
Spinal Deformity ◽  
Adult Spinal Deformity ◽  
The United States ◽  
Adverse Outcomes ◽  
High Rate ◽  
Prognostic Models ◽  
Time To Event ◽  
European Continent ◽  
Event Risk ◽  
Risk Estimates

OBJECTIVEAdult spinal deformity (ASD) surgery has a high rate of major complications (MCs). Public information about adverse outcomes is currently limited to registry average estimates. The object of this study was to assess the incidence of adverse events after ASD surgery, and to develop and validate a prognostic tool for the time-to-event risk of MC, hospital readmission (RA), and unplanned reoperation (RO).METHODSTwo models per outcome, created with a random survival forest algorithm, were trained in an 80% random split and tested in the remaining 20%. Two independent prospective multicenter ASD databases, originating from the European continent and the United States, were queried, merged, and analyzed. ASD patients surgically treated by 57 surgeons at 23 sites in 5 countries in the period from 2008 to 2016 were included in the analysis.RESULTSThe final sample consisted of 1612 ASD patients: mean (standard deviation) age 56.7 (17.4) years, 76.6% women, 10.4 (4.3) fused vertebral levels, 55.1% of patients with pelvic fixation, 2047.9 observation-years. Kaplan-Meier estimates showed that 12.1% of patients had at least one MC at 10 days after surgery; 21.5%, at 90 days; and 36%, at 2 years. Discrimination, measured as the concordance statistic, was up to 71.7% (95% CI 68%–75%) in the development sample for the postoperative complications model. Surgical invasiveness, age, magnitude of deformity, and frailty were the strongest predictors of MCs. Individual cumulative risk estimates at 2 years ranged from 3.9% to 74.1% for MCs, from 3.17% to 44.2% for RAs, and from 2.67% to 51.9% for ROs.CONCLUSIONSThe creation of accurate prognostic models for the occurrence and timing of MCs, RAs, and ROs following ASD surgery is possible. The presented variability in patient risk profiles alongside the discrimination and calibration of the models highlights the potential benefits of obtaining time-to-event risk estimates for patients and clinicians.

Characteristics of false-positive alerts on transcranial motor evoked potential monitoring during pediatric scoliosis and adult spinal deformity surgery: an “anesthetic fade” phenomenon

2020 ◽  
Vol 32 (3) ◽  
pp. 423-431 ◽  
Author(s):  
Hiroki Ushirozako ◽  
Go Yoshida ◽  
Tomohiko Hasegawa ◽  
Yu Yamato ◽  
Tatsuya Yasuda ◽  
...  
Keyword(s):  
Spinal Deformity ◽  
False Positive ◽  
Adult Spinal Deformity ◽  
False Positive Rate ◽  
Multivariate Logistic Regression Analysis ◽  
Motor Evoked Potential ◽  
Scoliosis Surgery ◽  
True Negative ◽  
Duration Of Surgery ◽  
Spinal Deformity Surgery

OBJECTIVETranscranial motor evoked potential (TcMEP) monitoring may be valuable for predicting postoperative neurological complications with a high sensitivity and specificity, but one of the most frequent problems is the high false-positive rate. The purpose of this study was to clarify the differences in the risk factors for false-positive TcMEP alerts seen when performing surgery in patients with pediatric scoliosis and adult spinal deformity and to identify a method to reduce the false-positive rate.METHODSThe authors retrospectively analyzed 393 patients (282 adult and 111 pediatric patients) who underwent TcMEP monitoring while under total intravenous anesthesia during spinal deformity surgery. They defined their cutoff (alert) point as a final TcMEP amplitude of ≤ 30% of the baseline amplitude. Patients with false-positive alerts were classified into one of two groups: a group with pediatric scoliosis and a group with adult spinal deformity.RESULTSThere were 14 cases of false-positive alerts (13%) during pediatric scoliosis surgery and 62 cases of false-positive alerts (22%) during adult spinal deformity surgery. Compared to the true-negative cases during adult spinal deformity surgery, the false-positive cases had a significantly longer duration of surgery and greater estimated blood loss (both p < 0.001). Compared to the true-negative cases during pediatric scoliosis surgery, the false-positive cases had received a significantly higher total fentanyl dose and a higher mean propofol dose (0.75 ± 0.32 mg vs 0.51 ± 0.18 mg [p = 0.014] and 5.6 ± 0.8 mg/kg/hr vs 5.0 ± 0.7 mg/kg/hr [p = 0.009], respectively). A multivariate logistic regression analysis revealed that the duration of surgery (1-hour difference: OR 1.701; 95% CI 1.364–2.120; p < 0.001) was independently associated with false-positive alerts during adult spinal deformity surgery. A multivariate logistic regression analysis revealed that the mean propofol dose (1-mg/kg/hr difference: OR 3.117; 95% CI 1.196–8.123; p = 0.020), the total fentanyl dose (0.05-mg difference; OR 1.270; 95% CI 1.078–1.497; p = 0.004), and the duration of surgery (1-hour difference: OR 2.685; 95% CI 1.131–6.377; p = 0.025) were independently associated with false-positive alerts during pediatric scoliosis surgery.CONCLUSIONSLonger duration of surgery and greater blood loss are more likely to result in false-positive alerts during adult spinal deformity surgery. In particular, anesthetic doses were associated with false-positive TcMEP alerts during pediatric scoliosis surgery. The authors believe that false-positive alerts during pediatric scoliosis surgery, in particular, are caused by “anesthetic fade.”

scholarly journals Variability in Hospital Costs of Adult Spinal Deformity Care

Spine ◽  
2020 ◽  
Vol 45 (17) ◽  
pp. 1221-1228
Author(s):  
Karel Jacobs ◽  
Thibault Dewilde ◽  
Cindy Vandoren ◽  
Brecht Cardoen ◽  
Nancy Vansteenkiste ◽  
...  
Keyword(s):  
Spinal Deformity ◽  
Adult Spinal Deformity ◽  
Hospital Costs
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