Spine surgery cost reduction at a specialized treatment center

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Bariatric surgery and low back pain: a systematic literature review

It is estimated that one third of the world population is overweight and 20% of adults have some low back symptoms at some point of their lives. The association of obesity and low back pain and physical deterioration has been well established. We designed this study to evaluate the role of bariatric surgery (BS) for lumbar spine symptoms in obese patients. A systematic literature review was performed using the PubMed database identifying lumbar spine symptoms (pain, functional status, disability index) and/or complications of lumbar spine surgery before and after BS. Study quality was assessed according to the Oxford Centre for Evidence-Based Medicine. Ten studies were identified. Nine evaluated the role of BS in low back pain and/or functional status before and after surgery: all reported that bariatric surgery had a positive impact in improving low back pain symptoms and decreasing disability in severely obese patients. One study evaluated the role of posterior lumbar surgery in patients who were obese at the time of surgery and those who had a previous bariatric procedure: bariatric surgery decreased postoperative surgical complications. The level of the evidence was low (III and IV). Bariatric surgery in severely obese patients decreases the intensity of low back symptoms and also decreases disability secondary to back problems. Additionally, bariatric surgery may be advantageous for patients who need a posterior lumbar surgery and are severely obese. Prospective studies with longer follow-up are necessary to confirm this conclusion.10110211

Thoracolumbar Injury Classification And Injury Severity Score System: A Literature Review Of Its Safety

The Thoracolumbar Injury Classification and Severity Score System (TLICS) is widely used to help guide the treatment of thoracolumbar spine trauma. The purpose of this study is to evaluate the safety of the TLICS in clinical practice. Methods Using the Medline database without time restriction, we performed a systematic review using the keyword "Thoracolumbar Injury Classification," searching for articles utilizing the TLICS. We classified the results according to their level of evidence and main conclusions. Results Nine articles met our inclusion and exclusion criteria. One article evaluated the safety of the TLICS based on its clinical application (level II). The eight remaining articles were based on retrospective application of the score, comparing the proposed treatment suggested by the TLICS with the treatment patients actually received (level III). The TLICS was safe in surgical and nonsurgical treatment with regards to neurologic status. Some studies reported that the retrospective application of the TLICS had inconsistencies with the treatment of burst fractures without neurologic deficits. Conclusions This literature review suggested that the TLICS use was safe especially with regards to preservation or improvement of neurologic function. Further well-designed multicenter prospective studies of the TLICS application in the decision making process would improve the evidence of its safety. Special attention to the TLICS application in the treatment of stable burst fractures is necessary.61808

Occipitocervical fixation: general considerations and surgical technique

To review and present details on the occipitocervical fixation (OCF) technique as well as considerations for planning the procedure. Methods: We present the surgical technique of OCF in a step-by-step didactic and practical manner with surgical tips and tricks, including C1 and C2 screw fixation techniques. Additionally, we discuss complications, the extension of fusion, types of OCF, and how to avoid common side effects associated with OCF. The complex and mobile anatomy of the craniocervical junction, when requiring fixation and fusion, warrants rigid instrumentation that can be achieve using a modern screw-plate-rod construct. Indications for OCF are craniocervical instability, and atlantoaxial instability when selective atlantoaxial fusion is not feasible. OCF generally involves occiput-C2 fusion. C1 fixation is generally unnecessary, since it increases the surgical time and is associated with the risk of vascular complications. Selective occiput-C2 fusion is recommended when there is no need for including the cervical subaxial region (eg, when stenosis or fractures coexist in the subaxial spine), and good fixation is achieved at C2. Most instrumentation systems now have occipital plates that are not pre-integrated to rods, making fixation much simpler. Surgical steps, from position to wound closure, are presented in detail, with pearls for practice and discussion of cervical alignment. OCF is a challenging procedure, with potential risk of severe adverse effects. Understanding the surgical indications, as well as the nuances of the surgical technique, is required to improve patient outcomes and avoid complications

Visualización radiológica intraoperatoria de la región occipito-cervical y columna cervical alta: nota técnica

We report a technical note to obtain a better intraoperative radiological view in surgeries of the craniocervical junction and upper cervical spine.Relatamos nota técnica para mejor visualización radiológica intraoperatória en las cirugías de la región occipito-cervical y de la columna cervical alta.Relatamos nota técnica para melhor visualização radiológica intraoperatória em cirurgias da região occipitocervical e coluna cervical superior.Universidade Federal de São Paulo (UNIFESP) Departamento de Neurologia e NeurocirurgiaUniversidade Estadual de Campinas Departamento de Neurologia Disciplina de NeurocirurgiaUNIFESP, Depto. de Neurologia e NeurocirurgiaSciEL

Migração distal de catéter de derivação ventrículo-peritoneal para implante mamário de silicone

Federal University of São Paulo Department of Neurology and NeurosurgeryCampinas State University Department of Neurology and NeurosurgeryUNIFESP, Department of Neurology and NeurosurgerySciEL

Avaliação da artrodese e do alinhamento cervical após discectomia cervical com interposição de polimetilmetacrilato

BACKGROUND AND OBJECTIVES: Surgical treatment of cervical radiculopathy with or without myelopathy is a controversy issue, although anterior discectomy is the most common form of treatment. METHOD: We present the evaluation of the arthrodesis' rate and cervical alignment in 48 patients with cervical degenerative disease (CDD) submitted to anterior cervical discectomy with interposition of polymethylmetacrylate (PMMA). Odom and Nürick scales were used to evaluation of functional status before and after surgery. Cervical spine X-rays were used to access arthrodesis and alignment, at least 2 years after the procedure. RESULTS: Excellent and good results (Odom I and II) were obtained in 91% of the patients with radiculopathy and in 69% of those with myelopathy. Using the chi square test of independence (1% of significance), there was no association between excellent and good clinical results with the presence of arthrodesis verified in cervical X-rays. The presence of cervical alignment had association with good results, whereas the misalignment was associated with unfavorable outcomes. Two patients died: one cervical hematoma and other from graft migration with cord compression. CONCLUSIONS: Cervical alignment was more important than fusion to achieve good surgical results in CDD.TEMA E OBJETIVO: O tratamento cirúrgico da radiculopatia cervical com ou sem mielopatia é um tema controverso, embora a discectomia por via anterior seja uma das formas mais comuns de tratamento. MÉTODO: Apresentamos a avaliação da artrodese cervical e do alinhamento pós operatório em 48 pacientes com doença degenerativa cervical (DDC) submetidos a discectomia por via anterior seguida da interposição de polimetilmetacrilato (PMMA). As escalas de Odom e de Nurick foram utilizadas para avaliar o status funcional dos pacientes antes e após a cirurgia. Radiografias da coluna cervical foram utilizadas para avaliar a artrodese e o alinhamento cervical, pelo menos 2 anos após o procedimento. RESULTADOS: Excelentes e bons resultados (Odom I e II) foram obtidos em 91% dos casos com radiculopatia e em 69% dos pacientes com mielopatia. Usando o teste do qui-quadrado de independência (1% de significância), não houve associação entre os resultados excelentes e bons e a presença de artrodese. A presença de alinhamento cervical, ao contrário, correlacionou-se com bons resultados. Dois pacientes faleceram devido a hematoma cervical e migração do enxerto. CONCLUSÃO: O alinhamento cervical correlacionou-se com bons resultados cirúrgicos em nossos pacientes, enquanto que a taxa de artrodese não teve relação com o resultado clínico dos pacientes.Federal University of São Paulo Department of Neurology and NeurosurgeryUniversity of Campinas Department of NeurologyFederal University of São PauloUNIFESP, Department of Neurology and NeurosurgeryUNIFESPSciEL

Surgical management of intramedullary hemangioblastomas

OBJECTIVES: to report an experience and to present a surgical technique to achieve total resection and cure. METHODS: nine consecutive cases of intramedullary haemangioblastomas, operated between 2000 and 2008 are presented. The functional scale proposed by McCormick was used to evaluate the patients' neurological status. RESULTS: age at presentation varied from 13 to 45 (average 27.1) years. Four (44.4%) patients were male and five (55.5%), female. Two patients had an associated von Hippel-Lindau disease, with others haemangioblastomas. According to the site of presentation, seven (77.7%) were localized at the cervical region (including two at the cervico-medullary junction), and two (22.2%) at the thoracic level. Total resection was achieved in all cases. Three patients had some functional worsening immediately after surgical procedure. After six months, there were no patients with functional worsening comparing with the pre-operative status and two patients had clinical improvement. CONCLUSIONS: adequate knowledge of anatomy and the correct use of microsurgical techniques allowed total resection of these tumors with minimal morbidity and maximum functional recovery.OBJETIVO: descrever uma experiência e as técnicas para abordagem destas lesões com ênfase nos aspectos microcirúrgicos. MÉTODOS: foram relatados nove casos consecutivos de pacientes submetidos à ressecção de lesões intramedulares operados entre 2000 e 2008. A escala funcional de McCormick foi usada para avaliar o status funcional dos pacientes RESULTADOS: a idade dos pacientes variou de 13 a 45 anos (média de 27,1 anos). Quatro (44,4%) pacientes eram homens e cinco (55,5%), mulheres. Dois pacientes tinham a doença de von Hippel-Lindau, com outros hemangioblastomas associados. Conforme a localização, sete (77,7%) pacientes tinham lesões na região cervical (dois deles com tumores na transição crânio-cervical) e dois (22,2%) tinham lesões na região torácica. Todos os pacientes tiveram ressecção total das lesões, sendo que três apresentaram leve piora clínica no pós-operatório imediato. Após seis meses do procedimento cirúrgico, dois pacientes apresentaram melhora clínica, enquanto sete mantinham-se funcionalmente iguais ao período pré-operatório. CONCLUSÕES: o conhecimento anatômico e de técnicas microcirúrgicas adequadas permite a ressecação total destas lesões sem agregar morbidade adicional.OBJETIVOS: describir una experiencia y las técnicas para abordaje de esas lesiones, enfatizando los aspectos microquirúrgicos. MÉTODOS: fueron relatados nueve casos consecutivos de pacientes sometidos a resección de lesiones intramedulares, operados entre 2000 y 2008. La escala funcional de McCormick fue usada para la evaluación del status funcional de los pacientes RESULTADOS: la edad de los pacientes varió de 13 a 45 anos (media de 27,1). Cuatro (44,4%) pacientes eran hombres y cinco (55,5%), mujeres. Dos pacientes eran portadores del enfermedad de von Hippel-Lindau, con otros hemangioblastomas asociados. Conforme la localización, siete (77,7%) pacientes tenían lesiones en la región cervical (dos con tumores en la transición cráneo-cervical) y dos (22,2%) tenían lesiones en la región torácica. Todos los pacientes tuvieron resección total de los tumores, siendo que tres tuvieron deterioración clínica leve en el post-operatorio inmediato. Después de seis meses del procedimiento quirúrgico, dos pacientes presentaron mejoras clínicas, mientras seis se mantuvieron funcionalmente iguales al periodo pre-operatorio. CONCLUSIONES: el conocimiento anatómico y de técnicas microquirúrgicas adecuadas permite la resección total de estos tumores sin agregar morbididad adicional.27427

Thoracolumbar injury classification and injury severity score system: a literature review of its safety

Study Design Systematic literature review. Objective The Thoracolumbar Injury Classification and Severity Score System (TLICS) is widely used to help guide the treatment of thoracolumbar spine trauma. The purpose of this study is to evaluate the safety of the TLICS in clinical practice. Methods Using the Medline database without time restriction, we performed a systematic review using the keyword Thoracolumbar Injury Classification, searching for articles utilizing the TLICS. We classified the results according to their level of evidence and main conclusions. Results Nine articles met our inclusion and exclusion criteria. One article evaluated the safety of the TLICS based on its clinical application (level II). The eight remaining articles were based on retrospective application of the score, comparing the proposed treatment suggested by the TLICS with the treatment patients actually received (level III). The TLICS was safe in surgical and nonsurgical treatment with regards to neurologic status. Some studies reported that the retrospective application of the TLICS had inconsistencies with the treatment of burst fractures without neurologic deficits. Conclusions This literature review suggested that the TLICS use was safe especially with regards to preservation or improvement of neurologic function. Further well-designed multicenter prospective studies of the TLICS application in the decision making process would improve the evidence of its safety. Special attention to the TLICS application in the treatment of stable burst fractures is necessary.The Thoracolumbar Injury Classification and Severity Score System (TLICS) is widely used to help guide the treatment of thoracolumbar spine trauma. The purpose of this study is to evaluate the safety of the TLICS in clinical practice. Methods Using the Me618085sem informaçãosem informaçã

Simulação em 3D da redução da fossa posterior no Chiari do tipo I

We proposed a 3D model to evaluate the role of platybasia and clivus length in the development of Chiari I (CI). Using a computer aided design software, two DICOM files of a normal CT scan and MR were used to simulate different clivus lengths (CL) and also different basal angles (BA). The final posterior fossa volume (PFV) was obtained for each variation and the percentage of the volumetric change was acquired with the same method. The initial normal values of CL and BA were 35.65 mm and 112.66 degrees respectively, with a total PFV of 209 ml. Ranging the CL from 34.65 to 29.65 - 24.65 - 19.65, there was a PFV decrease of 0.47% - 1.12% - 1.69%, respectively. Ranging the BA from 122.66 degrees to 127.66 degrees - 142.66 degrees, the PFV decreased 0.69% - 3.23%, respectively. Our model highlights the importance of the basal angle and clivus length to the development of CI.We proposed a 3D model to evaluate the role of platybasia and clivus length in the development of Chiari I (CI). Using a computer aided design software, two DICOM files of a normal CT scan and MR were used to simulate different clivus lengths (CL) and als745405408sem informaçãosem informaçãoNo presente estudo, propusemos a criação de um modelo computacional em 3D com elaboração de software onde dois arquivos em formato DICOM com uma TC e RNM de crânio foram usados para simular diferentes mensurações na extensão do clivus (EC) e no ângulo ba