Relevant bibliographies by topics / Lumbar region

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Lumbar region'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Lumbar region"

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Gelabert-González, Miguel. "Paragangliomas of the lumbar region." Journal of Neurosurgery: Spine 2, no. 3 (March 2005): 354–65. http://dx.doi.org/10.3171/spi.2005.2.3.0354.

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✓ The author reports two cases of cauda equina paraganglioma (CEP) and provides a review of all previously published cases. The current radiological, neurosurgical, and pathological literature on this rare tumor is also reviewed.
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Yurisworo, Anggita Tri, Bagas Widhiarso, Andhi Prijosedjati, and Pamudji Utomo. "BESAR KURVA THORAKAL DAN LUMBAL MODIFIER SEBAGAI FAKTOR PREDIKSI TERHADAP KOREKSI SPONTAN KURVA LUMBAL PASKA OPERASI PADA ADOLESCENT IDIOPATHIC SCOLIOSIS LENKE I." Biomedika 11, no. 2 (September 16, 2019): 74–80. http://dx.doi.org/10.23917/biomedika.v11i2.7629.

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Adolescent idiopathic scoliosis Lenke I dengan pola kurva mayor pada kurva thorakal (main thoracic), dengan kurva proximal thoracic dan thoracolumbar/lumbar sebagai kurva minor non struktural. Instrumentasi dan fusi hanya pada kurva thorakal dianjurkan. Pada literatur dijelaskan bahwa koreksi spontan kurva lumbal terjadi sebagai kompensasi untuk menyeimbangkan kurva thorakal setelah dilakukannya fusi thorakal selektif. Lumbal modifier dibagi menjadi 3 grup, pemilihan terapi operatif bergantung pada tipe lumbal modifier. Penelitian ini merupakan suatu analisis observational pada 35 pasien adolescent idiopathic scoliosis Lenke I paska operasi koreksi deformitas dan instrumentasi posterior. evaluasi menggunakan X ray sebelum dan setelah operasi untuk penentuan tipe lumbal modifier, besarnya koreksi kurva thorakal dan penilaian koreksi spontan kurva lumbal, kemudian dilakukan uji korelasi terhadap data yang didapat. Besarnya koreksi kurva thorakal terhadap koreksi spontan kurva lumbal paska operasi memiliki nilai signifikansi (Sig) = 0,000 < 0,05 dan besarnya koreksi kurva thorakal memiliki nilai koefisien regresi lebih besar bila dibandingkan dengan lumbal modifier terhadap koreksi spontan kurva lumbal paska operasi (variabel besar koreksi kurva thorakal (X1) = 0,764, Lumbal modifier (X2) = 0,092). Besarnya koreksi kurva thorakal berpengaruh signifikan terhadap koreksi spontan kurva lumbal paska operasi dan besarnya koreksi kurva thorakal yang paling dominan dalam mempengaruhi koreksi spontan kurva lumbal dibandingkan dengan lumbal modifier.Kata kunci : Adolescent idiopathic scoliosis, Lumbal modifier, kurva thorakal Adolescent idiopathic scoliosis Lenke I, main thoracic curve pattern has the major curve, with the proximal thoracic and thoracolumbar/lumbar being non structural minor curves. Thus, instrumentation and fusion of the main thoracic region alone is recommended. In the literature it is said that the lumbar curve spontaneously corrects to balance the thoracic curve after selective thoracic fusion. Most authors assumed a mechanism whereby improvement of the lumbar curve occurred through counterbalancing the surgical correction of the thoracic curve. The lumbar curve divided in three subgroups: lumbar modifier A, B and C. The selection of specific operative treatments depends on this modifier. This study was an observational analysis in 35 adolescent idiopathic scoliosis Lenke I patients after correction and posterior instrumentation surgery. Evaluation using X-rays before and after surgery to determine the type of lumbar modifier, the magnitude of the main thoracic curve and assessment of spontaneous lumbar curve correction, then correlation test obtained. The magnitude of main thoracic curve correction to the spontaneous lumbar curve correction has a significance value (Sig) = 0.000 < 0.05 and the magnitude of main thoracic curve correction has a greater regression coefficient than the lumbar modifier for spontaneous lumbar curve correction (large correction variable thoracic curve (X1) = 0.764, Lumbal modifier (X2) = 0.092). The magnitude of main thoracic curve correction has a significant effect on the spontaneous lumbar curve correction and the magnitude of main thoracic curve correction is most dominant factor to influence spontaneous lumbar curve correction compared to the lumbar modifier.Keywords: Adolescent idiopathic scoliosis, Lumbar modifier, main thoracic
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Oge, H., S. Oge, B. Gonenc, G. Ozbakis, and C. Asti. "Coenurosis in the lumbar region of a goat: a case report." Veterinární Medicína 57, No. 6 (July 16, 2012): 308–13. http://dx.doi.org/10.17221/6018-vetmed.

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Coenurosis caused by Coenurus cerebralis, the larval stage of Taenia multiceps, particularly affects sheep and goats. In this case report, two coenurus cysts were detected under the lumbar spinal cord (outside the CNS) in a goat. We first described cysts in the macro- and micro-morphological examination. The cysts were identified as C. cerebralis on the basis of the arrangement of scolices and the number and size of hooks in the scolices. The morphology of the larval cyst was similar to that of T. multiceps: the scolices had four suckers and a rostellum with a double crown of hooks. The hooks and hooklets were 178 and 132 &micro;m in length, respectively. T.&nbsp;gaigeri may be synonymous with T. multiceps. This may reflect a different host response to the parasite in goats. The difficulty of making a species identification in C. cerebralis or C. gaigeri based on their morphology is discussed. &nbsp;
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Szczepanik, M. P., P. M. Wilkołek, M. Pluta, Ł. R. Adamek, and Z. J. H. Pomorski. "The examination of biophysical parameters of skin (transepidermal water loss, skin hydration and pH value) in different body regions of ponies." Polish Journal of Veterinary Sciences 15, no. 3 (October 1, 2012): 553–59. http://dx.doi.org/10.2478/v10181-012-0081-8.

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Abstract The purpose of this study was to evaluate transepidermal water loss, skin hydration and skin pH in normal ponies. Sixteen ponies of both sexes were examined in the study. Measurements were taken from seven different sites: the neck region, the shoulder, thorax, lumbar, inguinal, lip region and the auricle. In each of the regions transepidermal water loss (TEWL), skin hydration and skin pH were measured. For transepidermal water loss, the lowest values were observed in the lumbar region (9.71g/hm2), while the highest values were observed in the lip region (22.35 g/hm2). In the case of skin hydration the lowest values were observed for the thorax region (2.13 CU), and the highest for the lip region (41.81 CU). For skin pH, the lowest results were obtained in the lumbar region (6.93), and the highest in the lip region (7.96).
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Dung, H. C. "Acupuncture Points of the Lumbar Plexus." American Journal of Chinese Medicine 13, no. 01n04 (January 1985): 133–43. http://dx.doi.org/10.1142/s0192415x85000186.

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This communication is the fifth in a series of six publications describing acupuncture points by anatomic nomenclature. This article describes acunpuncture points in the lumbar region of the posterior body wall, the inguinal and pelvic regins of the lower abdomen, and the medial surface of the thigh and leg. Acunpuncture points in these regions are generally established by anatomic features of the lumbar spinal nerves. Nerve branches of the posterior primary rami of the lumbar spinal nerves and the lumbar plexus provide the anatomic basis for acunpuncture points in these regions and are used to name the points accordingly.
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Ravikumar, V., A. M. Siri, and H. Sadashivana Gowd. "Sacralisation of Lumbar Vertebrae in Karnataka Region." International Journal of Contemporary Medicine 1, no. 1 (2013): 44. http://dx.doi.org/10.5958/j.2321-1032.1.1.016.

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Garrison, Michael, Richard B. Westrick, and Michael R. Johnson. "Morel-Lavallée Lesion of the Lumbar Region." Journal of Orthopaedic & Sports Physical Therapy 44, no. 3 (March 2014): 223. http://dx.doi.org/10.2519/jospt.2014.0404.

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Kalmykov, E. L., A. D. Gaibov, O. N. Sadriev, and A. N. Safarova. "Primary Muscle Hydatidosis of the Lumbar Region." Novosti Khirurgii 24, no. 6 (November 16, 2016): 610–16. http://dx.doi.org/10.18484/2305-0047.2016.6.610.

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Alajlouni, Dima, Dana Bliuc, Thach Tran, Nicholas Pocock, Tuan V. Nguyen, John A. Eisman, and Jacqueline R. Center. "Nonstandard Lumbar Region in Predicting Fracture Risk." Journal of Clinical Densitometry 21, no. 2 (April 2018): 220–26. http://dx.doi.org/10.1016/j.jocd.2017.05.014.

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Andar, U. B., W. F. J. Harkness, and R. D. Hayward. "Split Cord Malformations of the Lumbar Region." Pediatric Neurosurgery 26, no. 1 (1997): 17–24. http://dx.doi.org/10.1159/000121156.

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Dissertations / Theses on the topic "Lumbar region"

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Lothery, Natasha D. "Muscle activation of the lumbar and hip extensors during the hyperextension and reverse hyperextension exercises." Virtual Press, 2004. http://liblink.bsu.edu/uhtbin/catkey/1306854.

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The purpose of this study was to investigate the differences in muscle activity of the lumbar and pelvic extensor muscles during the hyperextension and reverse hyperextension exercises. Fifteen healthy and weight-trained volunteers (8 women, 7 men) were recruited from a university setting. Electromyographic (EMG) activity of selected hip and trunk extensor muscles was recorded during the execution of a hyperextension and a reverse hyperextension. Three muscles were analyzed: lumbar erector spinae (ES), biceps femoris (BF) and gluteus maximus (GM). The amount of external load used by each individual was determined by equating the amount of torque produced at the hip joint for both exercises. Participants performed two trials of each exercise, and completed at least three repetitions within the eight-second data collection period. Peak integrated EMG (iEMG) activity was expressed as a percentage of maximal voluntary isometric contraction (%MVC). A two-way repeated measures analysis of variance (ANOVA) failed to demonstrate significant differences in %MVC activity between the two exercises, (p>0.05). A comparison of the hyperextension and reverse hyperextension exercises revealed that under similar loading conditions, there is no significant difference in muscle activity of the lumbar and hip extensor muscles.
School of Physical Education
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Alshamari, Muhammed. "Low-dose computed tomography of the abdomen and lumbar spine." Doctoral thesis, Örebro universitet, Institutionen för hälsovetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-48242.

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Radiography is a common radiologic investigation despite abundant evidence of its limited diagnostic value. On the other hand, computed tomography (CT) has a high diagnostic value and is widely considered to be among the most important advances in medicine. However, CT exposes patients to a higher radiation dose and it might therefore not be acceptable simply to replace radiography with CT, despite the powerful diagnostic value of this technique. At the expense of reduced CT image quality, which could be adjusted to the diagnostic needs, low-dose CT of abdomen and lumbar spine can be performed at similar dose to radiography. The aim of the current thesis project was to evaluate low-dose CT of the abdomen and lumbar spine and to compare it with radiography. The hypothesis was that CT would give better image quality and diagnostic information compared to radiography at similar dose levels. Firstly, the diagnostic accuracy of low-dose CT of the abdomen was evaluated. Results showed that low-dose CT of abdomen has a high sensitivity and specificity compared to radiography, i.e., it has higher diagnostic accuracy. Similar results were obtained from our systematic review. Secondly, in a phantom study, an ovine phantom was scanned at various CT settings. The image quality was evaluated to obtain a protocol for the optimal settings for low-dose CT of lumbar spine at 1 mSv. This new protocol was then used in a clinical study to assess the image quality of low-dose CT of the lumbar spine and compare it to radiography. Results showed that low-dose CT has significantly better image quality than radiography. Finally, the impact of Iterative reconstruction (IR) on image quality of lumbar spine CT was tested. Iterative reconstruction is a recent CT technique aimed to reduce radiation dose and/or improve image quality. The results showed that the use of medium strength IR levels in the reconstruction of CT image improves image quality compared to filtered back projection. In conclusion, low-dose CT of the abdomen and lumbar spine, at about 1 mSv, has better image quality and gives diagnostic information compared to radiography at similar dose levels and it could therefore replace radiography.
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Miller, Jacqueline Chantal. "Pharmacological characterisation and the immunohistochemical localisation of glutamate receptor subtypes in the lumbar region of the neonatal rat spinal cord." Thesis, University of Bristol, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247861.

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Elfving, Britt. "Lumbar muscle fatigue and recovery : evaluation of electromyography in patients with long-term low-back pain and in healthy subjects /." Stockholm, 2002. http://diss.kib.ki.se/2002/91-7349-391-0/.

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Sánchez, Zuriaga Daniel. "Anatomía funcional del tronco. Valoración dinámica mediante técnicas no invasivas de la región lumbo-pélvica en personas sanas y pacientes con historia de dolor lumbar." Doctoral thesis, Universitat de València, 2006. http://hdl.handle.net/10803/9475.

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INTRODUCCIÓN Y OBJETIVO.En la literatura se han utilizado pruebas dinámicas sobre el movimiento de flexoextensióndel tronco para distinguir de manera objetiva entre sujetos sanos y pacientescon dolor lumbar de causa inespecífica. No tenemos constancia de estudio alguno quehaya registrado de manera simultánea los patrones de movimiento lumbo-pélvico y laactividad neuromuscular de la musculatura extensora de la espalda mediante técnicas noinvasivas, y los haya comparado entre distintos grupos de pacientes con dolor lumbar yalteraciones específicas de la anatomía de la región lumbo-pélvica.MATERIAL Y MÉTODOSParticiparon 50 sujetos sin antecedentes de dolor y 50 sujetos con dolor lumbar, de entrelos cuales se obtuvieron los diferentes grupos específicos. Durante ciclos estandarizadosde flexo-extensión del tronco se analizaron, siempre mediante técnicas no invasivas:· el movimiento de la cadera y la columna lumbar, mediante un electrogoniómetro tipoIsotrak que proporciona los grados de flexión.· la actividad eléctrica del músculo erector spinae, mediante un electromiógrafoinalámbrico de superficie tipo MESPEC 4000.Todos los datos registrados estaban sincronizados. Tras procesarlos y normalizarlos, seobtuvieron una serie de variables: actividad mioeléctrica y grados de flexión lumbar yde cadera medios en cada etapa del movimiento; rangos máximos de flexión de tronco,cadera y columna lumbar; tiempos de mantenimiento de la flexión lumbar y de caderapor encima del 90% de su máximo; duración, inicio y final del fenómeno de flexiónrelajacióndel erector espinal; índices de relajación sobre la actividad mioeléctrica de laflexión, la extensión y la flexo-extensión.Se constató la normalidad de las variables mediante el test de Kolmogorov-Smirnov, yla repetibilidad en el día y entre días de las medidas mediante el Coeficiente deCorrelación Intraclase y el Error Estándar de la Medida. Para ello, diez sujetos controlrepitieron las pruebas quince días después. Las diferencias significativas entre losgrupos se obtuvieron mediante los test de t de Student independiente y ANOVA de unfactor, con el test de Bonferroni como prueba post-hoc.RESULTADOSLa mayoría de pacientes mantuvieron el fenómeno de flexión-relajación del músculoerector spinae. Las variables de movimiento de la cadera, en todos los grupos depacientes, fueron similares a las de los sujetos sanos, mientras que la máxima flexióndel raquis lumbar y el tiempo que el raquis lumbar mantiene una flexión mayor del 90%de su máximo fueron menores en todos los grupos de pacientes. En pacientes conhistoria de dolor lumbar inespecífico se observó una alteración del patrón demovimiento lumbar y de la activación del erector spinae: tiempo de relajación muscular,índices de relajación y patrón de actividad mioeléctrica. En pacientes conespondilolistesis, sólo se observaron alteraciones en el patrón de movimiento lumbar,mientras que en pacientes con hernia discal y espondilitis anquilosante, sólo seobservaron alteraciones en la activación del erector spinae.DISCUSIÓNNuestros resultados han mostrado estrategias de movimiento en la flexo-extensión deltronco, específicas de cada alteración anatómica de la región lumbar, y que protegeríanel raquis de las cargas lesivas. Estas estrategias podrían explicarse según la anatomía yneurofisiología de la región lumbo-pélvica, a través del desencadenamiento de reflejosespinales o supraespinales. El estudio de estas estrategias de movimiento, además deaportarnos resultados inéditos en la literatura, puede tener diversas aplicaciones clínicasen campos como el diagnóstico de causas de dolor lumbar, la evaluación de técnicas detratamiento, el seguimiento de la evolución del paciente o la detección de simuladores.
INTRODUCTION: Dynamic tests have been used to distinguish low back pain patientsfrom pain-free subjects. However, we couldn't find studies which compared lumbopelvicmotion and erector spinae activity patterns registered in a non-invasive waybetween different groups of patients with low back pain and specific alterations of thelumbo-pelvic anatomy.MATERIALS AND METHODS: 50 pain-free and 50 low back pain patients, withspecific groups of discal herniation, spondylolisthesis, bilateral sacroiliitis andankylosing spondylitis, were studied.Using non-invasive techniques the patterns of lumbo-pelvic motion andelectromyographic activity of the erector spinae were analyzed during standardizedtrunk flexion-extension cycles. All data were synchronized. Variables: averagemyoelectrical activity and degrees of lumbo-pelvic flexion at each stage of movement;maximum ranges of trunk, hip and spine flexion; time during which the subjects keptlumbar and hip flexion over 90% of their maximum; duration, start and end of erectorspinae relaxation; relaxation indexes of myoelectrical activity at flexion, extension andflexion-extension.Normal distribution and reliability of the variables were confirmed (Kolmogorov-Smirnov test, Intra-class Correlation Coefficient, Standard Error of Measurement).Statistically significant differences were shown by the Student t-test for independentmeasurements and one-factor ANOVA, with Bonferroni test for post-hoc testing.RESULTS: Most patients showed the flexion-relaxation phenomenon of the erectorspinae. Hip motion pattern showed no differences between any of the groups, whereasall patients' maximum ranges of lumbar flexion and times of lumbar flexion over 90%of its maximum in all the patients were lower than controls'. Unspecific low back painpatients showed alterations of lumbar motion and erector spinae activation patterns,whereas spondylolisthesis group showed only alterations of lumbar motion pattern anddiscal herniation and ankylosing spondylitis groups showed only alterations of erectorspinae activation.DISCUSSION: Our results show protective movement strategies during trunk flexionextension,specific of each lumbar anatomy alteration. Such strategies could beexplained according to the anatomy and neurophysiology of the lumbo-pelvic region, bymeans of spinal or supraspinal reflexes. Our method not only brings forwardunpublished data but also could have clinical applications: diagnose of low back paincauses, evaluation of treatment techniques, patients follow-up of simulators detection.
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Díaz, Rojas Fernanda Paz, and Olmedo Verónica Dianna Troncoso. "Resistencia de la Musculatura Flexora y Extensora de Columna, Nivel de Discapacidad e Intensidad del Dolor en Pacientes con Diagnóstico de Síndrome de Dolor Lumbar Puro." Tesis, Universidad de Chile, 2007. http://repositorio.uchile.cl/handle/2250/110680.

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Antay, Bedregal David Rolando, and Revello Julia Evelyn Camargo. "Asociación entre sobrecarga postural y dolor en la zona lumbar en choferes de una empresa de transporte público." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2018. http://hdl.handle.net/10757/622956.

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Objetivo: Determinar la asociación entre la sobrecarga postural y dolor lumbar en conductores de “combis” de una empresa de transporte público. Materiales y métodos: Se realizó un estudio de tipo transversal-analítico donde la muestra estuvo formada por 208 conductores de “combis”. Se utilizó los cuestionarios Nórdico de Kuorinka, Bus Drivers Job Demands Scale y Rapid Upper Limb Assessment (RULA). Se aplicó Regresión de Poisson con varianza robusta y se calcularon Razones de Prevalencia (RP) crudas y ajustadas con un IC 95%. Resultados: La prevalencia de dolor lumbar fue 79,33% y se encontró que existe asociación con la sobrecarga postural según RULA, nivel 3 (RP 1,44 [IC 95% 1,05-1,99]) y nivel 4 (RP 1,72 [IC 95% 1,27-2,32]) en comparación a los conductores con nivel 2, luego de ajustar por índice de masa corporal (IMC), edad de los conductores, años de trabajo como conductor y horas diaria de trabajo. Conclusiones: Los conductores que están sometidos a mayor sobrecarga postural tienen más probabilidad de presentar dolor lumbar.
Aim: To determine the association between postural overload and low back pain in combis’ (van) drivers of a public transport company. Materials and Methods: A cross-sectional study among 208 “combi” drivers was conducted. Nordic Kuorinka Questionnaire, Bus Drivers Job Demands Scale, Rapid Upper Limb Assessment Scale (RULA) were administered. Poisson regression with robust variance and crude and adjusted Prevalence Ratios (PR) with 95% CI were compute. Results: The prevalence of low back pain was 79.33% and postural overload was associated with low back pain according to RULA, level 3 (PR 1.44 [95% CI 1.05-1.99]) and level 4 (PR 1.72 [IC 95% 1.27-2.32]) with respect to drivers with level 2, after adjustment for body mass index (BMI), age, years of work as a driver and daily hours of work. Conclusion: Drivers who had postural overload had more probability to present low back pain
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Lazarte, Argandoña Graciela Alejandra, and Parra Danai Barbara Eslava. "Prevalencia y factores asociados a la lumbalgia y discapacidad por dolor lumbar en vigilantes de Miraflores, Lima 2016." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2017. http://hdl.handle.net/10757/621858.

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Objetivos: Evaluar la prevalencia de dolor lumbar, la discapacidad provocada por este y sus factores asociados en trabajadores de vigilancia en un distrito de Lima, Perú. Métodos: Se realizó un estudio transversal en vigilantes de Miraflores, Lima. El muestreo se realizó por conglomerados. El dolor lumbar se midió con el cuestionario Nórdico para dolor lumbar y la discapacidad lumbar se midió con el cuestionario de Oswestry. Adicionalmente se midió actividad física mediante la versión corta del Cuestionario Internacional de la Actividad Física (IPAQ-SF) y datos sociodemográficos. Se calculó la prevalencia de lumbalgia y además se calculó razones de prevalencia crudas y ajustadas con sus intervalos de confianza al 95% utilizando regresión de Poisson con varianza robusta. Resultados: Se incluyeron 335 personas en el estudio. El 98% fueron hombres y la mediana de la edad en la población fue de 42 años (IQR: 21). El 55,8% presentó un nivel mínimo de actividad física, mientras que el 27,8 % realiza actividad física intensa. La prevalencia de dolor lumbar fue de 65,3% y la discapacidad fue 26,6%. Se encontró el tiempo sentado [ RPa: 2,21; IC95%=1,45-3,38] y la edad [RPa: 1,58; IC95%= 1,01-2,47] como factores asociados a la discapacidad. Conclusión: Dos de cada tres vigilantes presentaron dolor lumbar y aproximadamente unos de cada cuatro presentaron discapacidad por dolor lumbar.
Objective: Evaluate the prevalence of low back pain, the disability caused by this and the associated factor in watchmen in a district of Lima. Methods: It has been made a cross-sectional study of watchmen in Miraflores, Lima. The sampling was performed by clusters. The low back pain was measured by the Nordic questionnaire for low back pain and lumbar disability was measured with the Oswestry questionnaire. Additionally, the physical activity was measured by the short version of the International Questionnaire of Physical Activity (IPAQ-SF) and sociodemographic data. The prevalence of low back pain was calculated and the crude and adjusted prevalence ratios were calculated with their 95% confidence intervals using Poisson regression with robust variance. Results. The study includes 335 people. 98% were men, the median age was 42 (IQR:21). The 55.8% had a minimum level of physical activity. The prevalence of low back pain was 65.3% and the disability was 26.6%. the seated time was found [RPa: 2,21; IC95%=1,45-3,38] and age [RPa: 1,58; IC95%= 1,01-2,47] as factors associated with disability. Conclusion: Two out of three watchmen had low back pain and one in four had disability for low back pain.
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Douglas, Aaron Jack 1940. "THE ECONOMIC DETERMINANTS OF U.S.A. SOFTWOOD LOG EXPORTS FROM THE PACIFIC NORTHWEST REGION TO JAPAN; INTERNATIONAL ECONOMIC COOPERATION IN THE POSTWAR ERA (INVESTMENT, REGRESSION, ECONOMETRIC, CAPITAL, ELASTICITY, UNITED STATES)." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/275573.

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Baker, Shawn A. "An analysis of timber trespass and theft issues in the Southern Appalachian region." Thesis, Virginia Tech, 2003. http://scholar.lib.vt.edu/theses/available/etd-05212003-153313.

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Books on the topic "Lumbar region"

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McKenzie, Robin. The lumbar spine: Mechanical diagnosis and therapy. Waikanae, NZ: Spinal Publications, 2003.

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Maiuri, Francesco. Malformations of the lumbar sac and its content in the adult. Cosenza: Editoriale Bios, 1988.

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Lumbar myelography with water-soluble contrast media: Including comparison with computed tomography : textbook and atlas. Stuttgart: Thieme, 1986.

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Seagal, Z. M. Topographical and Pathotopographical Medical Atlas of the Chest, Abdomen, Lumbar Region, and Retroperitoneal Space. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119526735.

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The pelvic girdle: An approach to the examination and treatment of the lumbo-pelvic-hip region. Edinburgh: C. Livingstone, 1989.

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Lee, Diane. The pelvic girdle: An approach to the examination and treatment of the lumbo-pelvic-hip region. 2nd ed. Edinburgh: Churchill Livingstone, 1999.

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The pelvic girdle: An approach to the examination and treatment of the lumbo-pelvic-hip region. 3rd ed. Edinburgh: Churchill Livingstone, 2004.

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Kurnik, J. The connection: The mystique of groin, hip, lumbar, sacroiliac joint and muscle unified dynamics : examined and treated in a practical manual. Torrance, CA: J. Kurnik, 1997.

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(Gilles), Dubois G., Tenucci M, Giovannini G, and SpringerLink (Online service), eds. Rehabilitation in the dynamic stabilization of the lumbosacral spine. [Germany]: Springer, 2008.

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World Congress on Low Back Pain (2nd 1995 San Diego, Calif.). Second Interdisciplinary World Congress on Low Back Pain: The integrated function of the lumbar spine and sacroiliac joints, San Diego, November 9-11, 1995. Edited by Vleeming Andry. [San Diego, Calif: University of California, San Diego, Office of Continuing Medical Education, 1995.

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Book chapters on the topic "Lumbar region"

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Thiel, Walter. "Gluteal Region 7 Lumbar Region 1." In Photographic Atlas of Practical Anatomy I, 260–61. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60435-5_131.

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Capogna, Giorgio. "Anatomy of the Lumbar Epidural Region." In Epidural Technique In Obstetric Anesthesia, 19–37. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45332-9_2.

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Thiel, Walter. "Gluteal Region 10 Suprapiriform Foramen 3 Lumbar Region 3." In Photographic Atlas of Practical Anatomy I, 266–67. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60435-5_134.

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Thiel, Walter. "Gluteal Region 8 Suprapiriform Foramen 1 Lumbar Region 2." In Photographic Atlas of Practical Anatomy I, 262–63. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60435-5_132.

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Thiel, Walter. "Gluteal Region 9 Suprapiriform Foramen 2 Lumbar Region 3." In Photographic Atlas of Practical Anatomy I, 264–65. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60435-5_133.

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Mokhtarzadeh, Fatemeh. "A global vector autoregression model for softwood lumber trade." In International trade in forest products: lumber trade disputes, models and examples, 174–93. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789248234.0174.

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Abstract A novel econometric approach is developed in this chapter, namely, the Global Vector Autoregressive (GVAR) model. It provides a comprehensive framework for analyzing the country-level impacts of various domestic, foreign, and/or global shocks on softwood lumber trade. The GVAR approach is applied to Canada-U.S. trade in softwood lumber and used to analyze the effect of external shocks on Canadian lumber prices. Findings indicate that Canada's export prices are positively correlated to U.S. housing starts and real GDP. Further, using impulse response functions, it is used to examine the effects on regional lumber export prices in Canada of: (1) a change in U.S. housing starts; (2) a reduction in U.S. GDP by one standard deviation; (3) a COVID-19 induced decline in U.S. GDP (of three standard deviations); (4) an increase in global oil prices; and, in the Appendix, (5) an increase in the long-term interest rate. Price impacts vary a great deal by Canadian region depending on the type of shock, with the propagation mechanism in Alberta significantly different from that in other regions. For example, with an oil price shock and because Alberta is a major exporter of oil, the lumber export price remains high even as the shock dissipates over time.
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Mokhtarzadeh, Fatemeh. "A global vector autoregression model for softwood lumber trade." In International trade in forest products: lumber trade disputes, models and examples, 174–93. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789248234.0008.

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Abstract A novel econometric approach is developed in this chapter, namely, the Global Vector Autoregressive (GVAR) model. It provides a comprehensive framework for analyzing the country-level impacts of various domestic, foreign, and/or global shocks on softwood lumber trade. The GVAR approach is applied to Canada-U.S. trade in softwood lumber and used to analyze the effect of external shocks on Canadian lumber prices. Findings indicate that Canada's export prices are positively correlated to U.S. housing starts and real GDP. Further, using impulse response functions, it is used to examine the effects on regional lumber export prices in Canada of: (1) a change in U.S. housing starts; (2) a reduction in U.S. GDP by one standard deviation; (3) a COVID-19 induced decline in U.S. GDP (of three standard deviations); (4) an increase in global oil prices; and, in the Appendix, (5) an increase in the long-term interest rate. Price impacts vary a great deal by Canadian region depending on the type of shock, with the propagation mechanism in Alberta significantly different from that in other regions. For example, with an oil price shock and because Alberta is a major exporter of oil, the lumber export price remains high even as the shock dissipates over time.
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Fouquet, N., A. Petit, A. Descatha, and Y. Roquelaure. "Theoretical Impact of Workplace-Based Primary Prevention of Lumbar Disc Surgery in a French Region: A Pilot Study." In Advances in Intelligent Systems and Computing, 468–77. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96083-8_61.

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Mokhtarzadeh, Fatemeh, and G. Cornelis van Kooten. "Economic analysis of a softwood lumber quota regime and a policy to subsidize biomass generation of electricity." In International trade in forest products: lumber trade disputes, models and examples, 83–109. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789248234.0083.

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Abstract The REPA spatial price equilibrium model developed in Chapter 4 is used to investigate the regional welfare impacts of a quota on exports of Canadian softwood lumber to the U.S. In the model, Canada is divided into seven regions and the U.S. into five regions, with the rest of the world constituting a 13th region; the model is calibrated to the bilateral trade flows that existed in 2016 when there was free trade in lumber. Various quota levels are examined in terms of their impact on producers and consumers in both countries. Canadian producers are found to be better off with a hard quota compared with free trade, although the quota leads to a reduction in market share while driving a wedge between Canadian and U.S. prices, both of which are aggravated with harder quotas. Overall, the loss of export sales to the U.S. is not recouped with sales to the rest of the world. The REPA model is also used to examine the impact of EU demand for wood pellets to generate electricity. Results indicate that pellet prices will approximately double.
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Mokhtarzadeh, Fatemeh, and G. Cornelis van Kooten. "Economic analysis of a softwood lumber quota regime and a policy to subsidize biomass generation of electricity." In International trade in forest products: lumber trade disputes, models and examples, 83–109. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789248234.0005.

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Abstract The REPA spatial price equilibrium model developed in Chapter 4 is used to investigate the regional welfare impacts of a quota on exports of Canadian softwood lumber to the U.S. In the model, Canada is divided into seven regions and the U.S. into five regions, with the rest of the world constituting a 13th region; the model is calibrated to the bilateral trade flows that existed in 2016 when there was free trade in lumber. Various quota levels are examined in terms of their impact on producers and consumers in both countries. Canadian producers are found to be better off with a hard quota compared with free trade, although the quota leads to a reduction in market share while driving a wedge between Canadian and U.S. prices, both of which are aggravated with harder quotas. Overall, the loss of export sales to the U.S. is not recouped with sales to the rest of the world. The REPA model is also used to examine the impact of EU demand for wood pellets to generate electricity. Results indicate that pellet prices will approximately double.
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Conference papers on the topic "Lumbar region"

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Stemper, Brian D., Narayan Yoganandan, Barry S. Shender, Glenn R. Paskoff, Frank A. Pintar, and Jamie L. Baisden. "Level- and Region-Specific Properties of Young Human Lumbar Annulus." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53829.

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The objective of this study was to determine the material properties of the human lumbar intervertebral disc annulus as a function of anatomical region and spinal level. Samples from minimally or nondegenerated spines were extracted from young post mortem human subjects and tested in tension. Statistically significant differences were found based on anatomical region. Trends appear to indicate spinal level dependency, although additional samples are required to attain statistical significance. It is possible to use finite element models incorporating these region- and level-specific properties to quantify internal load-sharing and delineate the mechanism of disorders such as herniation.
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Haro, Fernando Blaya, Pilar San Pedro Orozco, Alonso Blaya San Pedro, Roberto D'Amato, Juan A. Juanes, and José Antonio Rodríguez Montes. "Biomechanical normality model of the Human lumbar spine (Lumbosacral region)." In TEEM'19: Technological Ecosystems for Enhancing Multiculturality. New York, NY, USA: ACM, 2019. http://dx.doi.org/10.1145/3362789.3362905.

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Chu, Bryant, Jeremi Leasure, and Dimitriy Kondrashov. "Selective Densitometry of the Lumbar Spine." In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14218.

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Bone mineral density (BMD) has been identified as a major factor in spine construct strength, with failures resulting in pedicle screw loosening and pullout2. Computed tomography (CT) scans have been shown to effectively measure BMD1,4. Previous research has utilized this linear correlation of CT Hounsfield Units (HU) to BMD in order to determine BMD as a function of anatomic location within cervical vertebrae1; however, the lumbar spine has not yet been reported on. The goal of this study was to describe BMD of anatomical regions within lumbar vertebrae using the correlation between HU and BMD. It was hypothesized that posterior elements of the spine would exhibit significantly different BMD than the vertebral body. This was tested through means comparison of BMD for each anatomical region.
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Yookwan, Watcharaphong, Krisana Chinnasarn, and Benchaporn Jantarakongkul. "Region of interest of human lumbar spine segmentation using geometric triangular analysis." In 2018 International Workshop on Advanced Image Technology (IWAIT). IEEE, 2018. http://dx.doi.org/10.1109/iwait.2018.8369775.

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Stemper, Brian D., David Barnes, Jamie L. Baisden, Narayan Yoganandan, Frank A. Pintar, Jason Moore, and Dennis J. Maiman. "Lumbar Spinal Mechanics in Pure Bending: Influence of Gender, Spinal Level, and Degeneration Grade." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206829.

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Gender differences have been identified in normal and traumatic motions of the spine. In the cervical region, spinal motions in females were significantly greater than in males during identical dynamic acceleration pulses [1]. Static cervical range of motion was also shown to be greater in female volunteers [2]. In the thoracic region, gender differences were identified in compressive and tensile elastic moduli [3]. Although male volunteers had slightly greater lumbar spine mobility, the difference was not statistically significant [4]. Another study reported that female lumbar specimens were somewhat more flexible than male specimens [5]. Lumbar spinal motions are clinically important in the diagnosis of abnormalities and instability. Increased motions occur secondary to instability and may indicate a need for spinal stabilization. However, although previous studies have provided baseline data for lumbar motions [6], possible variations in spinal motions between males and females may lead to inaccurate diagnosis. Therefore, the purpose of this investigation was to define lumbar spinal motions on a level-by-level basis to determine statistically significant differences between males and females and at varying levels of degeneration.
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Khurana, Anil, Paramjeet Kaur, Ashok K. Chauhan, Yashpal Verma, and Nupur Bansal. "Extra ovarian adult granulosa cell tumor of omentum: A report of a rare entity." In 16th Annual International Conference RGCON. Thieme Medical and Scientific Publishers Private Ltd., 2016. http://dx.doi.org/10.1055/s-0039-1685372.

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Aims: Extra ovarian granulosa cell tumor (GCT) is extremely rare tumor, assumed to arise from the ectopic gonadal tissue along the embryonal route of the genital ridge. A case of extra ovarian granulosa cell tumor of omentum in a 69 year old female presented here. Materials and Methods: A 69 years old postmenopausal, hypertensive female presented with complaints of pain in right lumber and iliac region of one month duration. Pain was off and on and intermittent. The patient had a history of hysterectomy 12 years ago for fibroid uterus. Results: Ultrasound examination of abdomen showed a hypoechoic lesion of size 78.1 mm x 57.3 mm in right iliac fossa with mild thickening of surrounding omentum. Another hypoechoic lesion of size 36.7 mm x 22.9 mm was seen in retroperitoneal region in supero-medial aspect of right kidney. CECT abdomen showed heterogeneously enhanced nodular lesion of size 6.6 x 6.8 cm in right lumbar region, mild thickening of surrounded omentum also seen however there was no evidence of infiltration to bowel loop seen. Uterus was not visualized. PET CT whole body revealed mildly metabolically active enlarged nodes in the bilateral level ib an ii, metabolically active large lobulated heterogeneously enhancing soft tissue density lesion in right lumbar region with non enhancing areas of necrosis. The lesion is closely abutting the anterior abdominal wall musculature antero laterally and small bowel loop medially surrounding mesenty shows increased vascularity and haziness. Colonoscopy findings were normal. Trucut biopsy of mass right lumbar region was positive for malignancy likely Round cell Sarcoma. A provisional diagnosis of retroperitoneal sarcoma of right lumbar region was made. She underwent exploratory laparotomy with excision of tumor. As per Operative findings there was approximately 8 x 7 cm, firm, omental mass present right to midline, arising from under surface of greater omentum. Ovaries were normal. Gross examination of omental mass showed nodular mass measuring 8 x 5 x 6 cm. External surface was multinodular and cut surface was grey brown to grey yellow with solid cystic areas and areas of necrosis. Microscopic examination of specimen showed Extraovarian Adult granulosa cell tumor/metastasis from occult granulose cell tumor. On IHC Vimentin, CK, SMA, Inhibin were positive, Ki67:15%, ER/PR were also positive and are negative for calretinin, thromobomodulin. Extensive necrosis was seen. After that she underwent rexploration and total omenectomy. HPE showed fat necrosis in omentum. All investigation showed no evidence of tumor in ovaries and at any other primary site then the patient finally diagnosed as having Granulosa cell tumor involving only omentum post op stage III C. Then patient was given six courses of chemotherapy with Inj Paclitaxel and Inj Carboplatin three weekly. Now patient is on regular follow up and disease free. Conclusion: Extra ovarian adult granulosa cell tumor of omentum is rare tumor. Multimodal treatment approaches including surgery, multi-agent chemotherapy may provide a survival benefit for patients.
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Li, Yang, Wei Liang, Jindong Tan, and Yinlong Zhang. "A novel automatically initialized level set approach based on region correlation for lumbar vertebrae CT image segmentation." In 2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA). IEEE, 2015. http://dx.doi.org/10.1109/memea.2015.7145215.

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Kim, Yoon Hyuk, Won Man Park, and Kyungsoo Kim. "Biomechanical Analysis in the Lumbar Spine During Two-Step Traction Therapy." In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-35701.

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Traction therapy is a widely used conservative treatment for low back pain. However, the effects of traction therapy on lumbar spine biomechanics are not well known. We investigated biomechanical effects of two-step traction therapy, which consists of global axial traction and local decompression, on the lumbar spine using a validated three-dimensional finite element model of the lumbar spine. One-third of body weight was applied at the center of the L1 vertebra toward the superior direction for the first axial traction. Anterior translation of L4 spinal bone was considered as the second local decompression. The lordosis angle between the superior planes of the L1 vertebra and sacrum was 44.6° at baseline, 35.2° with global axial traction, and 46.4° with local decompression. The fibers of annulus fibrosus in the posterior region, and intertransverse and posterior longitudinal ligaments experienced stress primarily during global axial traction, these stresses decreased during local decompression. A combination of global axial traction and local decompression would be helpful for reducing tensile stress on the fibers of the annulus fibrosus and ligaments, and intradiscal pressure in traction therapy. The present study could be used to develop a safer and more effective type of traction therapy.
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Parikh, Rachit, Amanesh Amanesh, Ali Kiapour, Vijay K. Goel, and Celeste Abjornson. "Biomechanical Investigation and Bone-Implant Stress Analysis of a Novel Lumbar Interspinous Spacer." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206870.

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Spinal stenosis usually presents with pain radiating beyond the back to the buttocks, thighs or lower legs. The pain is worsened with extension of the lumbar spine and improves with flexion of the spine. Interspinous spacers are a relatively new treatment option that can be implanted under the minimal spinal surgical procedure. The Interspinous process devices are designed to distract (open) the foramen, where the nerve endings pass away from the center of the spinal region and into the legs. There have been many studies on the motion but stress distributions in the spine and the device are sparse.
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Munro, Deborah S., Eric C. Tsai, Andrew R. Lingley, and Michael T. Khbeis. "Development of a Microfabricated Sensor System to Measure Lumbar Spinal Fusion." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65703.

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Lumbar spinal fusion surgery continues to experience major growth in the United States and worldwide. The surgery is performed by implanting spinal rods and screws within an incision on the lumbar region of the spine. This implanted hardware provides the initial mechanical stiffness until the morselized bone and bone growth factors generate new bone and can provide long term fixation. After surgery, development of the fusion is evaluated with radiographs, but determination of this fusion takes many months as the bone must first mineralize. The early stages are not visible on radiographs; however, this non-mineralized bone does provide substantial mechanical stiffness that could be measured with a sensor. As the spine moves and flexes, it creates a bending moment in the spinal rod, which could be measured as a strain. When initially implanted, this rod would experience its peak strain, but this would decrease as the bone shared some of the load. By periodically sampling the strain with a sensor, a curve could be generated that showed the overall progress of the fusion. To maximize the output signal, an interdigitated capacitor design was implemented as the most effective way to maximize the capacitance measurement. A design using 51 free-standing, interdigitated fingers resulted in 50 parallel plate capacitors. The interdigitated capacitor was connected to a Low-Z Amplifier circuit and attached to a spinal rod. The rod was then flexed to simulate spinal bending, and the capacitance changed as expected under physiological loads.
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Reports on the topic "Lumbar region"

1

Rasoolzadeh, Majid. Employment Decline in the Douglas-fir Region's Lumber and Plywood Industries: An Analysis of Structural and Cyclical Factors. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.1293.

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Zhong, Xiaoying, and Jiaxin Liu. Which of the Acupuncture Treatment Regimen for Lumbar Disc Herniation is more Effective and Safer: A protocol for systematic review and network meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, February 2021. http://dx.doi.org/10.37766/inplasy2021.2.0077.

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