Estabilizaciones lumbares dinámicas

O funcionamento fisiológico normal da coluna depende da movimentação normal de cada unidade motora, que consiste em duas vértebras e o disco intervertebral interposto entre elas. Embora a artrodese da coluna vertebral venha sendo utilizada para o tratamento de diversas doenças da coluna, essa modalidade de tratamento acarreta a perda de movimentação dos níveis em que houve a fusão e como consequência pode sobrecarregar os níveis adjacentes podendo provocar a sua degeneração precoce. Proponentes das técnicas de estabilização dinâmicas acreditam que estas podem levar a correção dos problemas minimizando o risco de degeneração dos níveis adjacentes. Atualmente existem no mercado diversos métodos de estabilização dinâmica anteriores e posteriores. Já existem trabalhos biomecânicos que comprovam o benefício teórico de quase todos eles, porém ainda hoje, faltam ensaios clínicos que comprovem a sua utilidade e segurança por longos períodos de seguimento para o paciente. Portanto é fundamental que estes materiais sejam analisados de maneira acadêmica para que no futuro próximo possam ser utilizados em situações precisas e com segurança para os pacientes

The influence of body image on surgical decisions in adolescent idiopathic scoliosis patients

OBJECTIVES: The objective of this study was to evaluate whether the severity of deformities in patients with adolescent idiopathic scoliosis contributes to patients’ decision regarding whether to undergo an operation. METHODS: We evaluated body image factors in adolescent idiopathic scoliosis patients. We evaluated the magnitude of the main scoliotic curve, gibbosity (magnitude and location), shoulder height asymmetry and patient’s age. We analyzed the correlation of these data with the number of years the patient was willing to trade for surgery, as measured by the time-trade-off method. RESULTS: A total of 52 patients were studied. We did not find a correlation between any of the parameters that were studied and the number of years that the patient would trade for the surgery. CONCLUSIONS: The magnitude of body deformities in patients with adolescent idiopathic scoliosis does not interfere with the decision to undertake surgical treatment

Effects of ganglioside G(M1) and erythropoietin on spinal cord lesions in rats: functional and histological evaluations

OBJECTIVE: To evaluate the functional and histological effects of ganglioside G(M1) and erythropoietin after experimental spinal cord contusion injury. METHODS: Fifty male Wistar rats underwent experimental spinal cord lesioning using an NYU-Impactor device and were randomly divided into the following groups, which received treatment intraperitoneally. The G(M1) group received ganglioside G(M1) (30 mg/kg); the erythropoietin group received erythropoietin (1000 IU/kg); the combined group received both drugs; and the saline group received saline (0.9%) as a control. A fifth group was the laminectomy group, in which the animals were subjected to laminectomy alone, without spinal lesioning or treatment. The animals were evaluated according to the Basso, Beattie and Bresnahan (BBB) scale, motor evoked potential recordings and, after euthanasia, histological analysis of spinal cord tissue. RESULTS: The erythropoietin group had higher BBB scores than the G(M1) group. The combined group had the highest BBB scores, and the saline group had the lowest BBB scores. No significant difference in latency was observed between the three groups that underwent spinal cord lesioning and intervention. However, the combined group showed a significantly higher signal amplitude than the other treatment groups or the saline group (

Análisis retrospectivo de los resultados de la utilización de las fracturas craneales halo dislocaciones subaxiales

OBJETIVO: avaliar o emprego do halo craniano em fraturas e luxações cervicais no atendimento inicial, relacionado com a taxa de sucesso na redução fechada de lesões cervicais nos diferentes tipos de fraturas. MÉTODOS: investigação retrospectiva de prontuários de pacientes atendidos e tratados de Janeiro de 2004 até Março de 2009, em um total de 222 pacientes, categorizando as lesões encontradas de acordo com a classificação AO. RESULTADOS: encontramos alta taxa de sucesso de redução fechada em pacientes com lesões cervicais por compressão axial (AO tipo A) no emprego do halo craniano; em lesões por distração (AO tipo B) e movimento rotacional (AO tipo C) observamos aproximadamente 50% de redução fechada da luxação; além disso, lesões em níveis mais craniais apresentam maior taxa de sucesso na redução. CONCLUSÃO: o emprego do halo craniano é encorajado, pois, além de realizar um papel imobilizador no atendimento inicial, apresenta resultados satisfatórios na tentativa de redução fechada da lesão cervical, melhorando o conforto do paciente, facilitando a abordagem cirúrgica posterior e o cuidado da equipe de enfermagem.OBJECTIVE: to evaluate the use of cranial halo cervical fractures and dislocations in the initial care related to the rate of successful closed reduction of cervical lesions in different types of fractures. METHODS: retrospective investigation of reports of patients admitted and treated from January 2004 to March 2009, a total of 222 patients. The lesions were categorized according to the AO classification. RESULTS: a high success rate of closed reduction in patients with cervical lesions by axial compression (AO type A) in the use of cranial halo; in distraction injuries (AO type B) and rotational motion (AO type C) we observed approximately 50% of closed reduction of dislocation; furthermore, lesions in more cranial levels have a higher success rate in reducing. CONCLUSION: the use of cranial halo is encouraged because, in addition to performing a immobilizing role in the initial care, it produces satisfactory results in the attempt of closed reduction of cervical injury, improving patient's comfort, facilitating the surgical approach and subsequent care of the nursing team.OBJETIVO: evaluar el uso de halo craneal en fracturas cervicales y luxaciones de los cuidados iniciales, en relación con el porcentaje de reducción cerrada con éxito de las lesiones cervicales en los diferentes tipos de fracturas. MÉTODOS: investigación retrospectiva de los informes de los pacientes ingresados y tratados desde enero de 2004 hasta marzo de 2009, en un total de 222 pacientes, las lesiones se clasificaron según la clasificación AO. RESULTADOS: se encontró un alto porcentaje de éxito de la reducción cerrada en pacientes con lesiones cervicales por compresión axial (AO tipo A), en el uso de halo craneal; en las lesiones por distracción (AO tipo B) y el movimiento de rotación (AO tipo C) se observó aproximadamente el 50% de la reducción cerrada de la luxación. Por otra parte, las lesiones en los niveles más craneales tienen una tasa de éxito mayor en su reducción. CONCLUSIÓN: el uso del halo craneal es alentado porque, además de realizar un papel en la atención inicial inmovilizador, produce resultados satisfactorios en el intento de reducción cerrada de la lesión cervical, mejorando la comodidad del paciente, facilitando el abordaje quirúrgico y los cuidados posteriores del equipo de enfermería

Elección de la vía quirúrgica para el tratamiento de las fracturas cervicales

OBJETIVO: definir características epidemiológicas da população vitimada, classificar as fraturas subaxiais e analisar como foram os tratamentos cirúrgicos, tendo como desfecho a via cirúrgica escolhida - anterior, posterior ou combinada - reunindo tais dados para observar padrões de tratamento para o melhor cuidado desses doentes. MÉTODOS: análise retrospectiva em prontuários médicos de 222 pacientes atendidos e tratados entre o ano de 2004 e o mês de Março de 2009 com fraturas, fraturas-luxações e luxações cervicais. Desses 222 pacientes, 163 correspondiam àqueles que tinham fraturas subaxiais classificáveis pelo método AO, ou seja, correspondiam a aproximadamente 73,4% do total. RESULTADOS: dentre os pacientes, 83% eram homens e aproximadamente 78% tinham entre 21 e 60 anos. Foram classificados como Tipo A 54 pacientes, e 50% foram operados - 85,18% via anterior, com corpectomia associada ou não à artrodese; foram classificados como Tipo B 77 pacientes, e 85,7% foram operados - 77,3% via posterior, considerando-se a lesão ligamentar; como Tipo C foram classificados 21 pacientes, e 81% foram operados - 94,1% via posterior; como Múltiplos Níveis foram considerados 11 pacientes, e 54,5% foram operados - 83,3% via posterior, nenhum por via anterior isoladamente. CONCLUSÃO: os dados obtidos podem contribuir para a padronização do atendimento ao paciente com traumatismo cervical e tornar os resultados do tratamento mais previsíveis. A experiência acumulada e revertida em números facilitará a escolha da via cirúrgica.OBJECTIVE: to define the epidemiologic characteristics of the involved patients, to classify the subaxial fractures to study how the patients have been surgically treated, with the chosen surgical approach (anterior, posterior or combined) being the main goal of the study, gathering these data in order to observe patterns of treatment for better care of the patient. METHODS: the medical history of 222 patients with cervical fractures, fracture-dislocations and dislocations, between the year of 2004 and March 2009, was retrospectively analyzed. Among these 222 patients, 163 of them had subaxial fractures that were eligible to the AO Classification system, corresponding to 73.4% of the total. RESULTS: 83% of the patients were male and approximately 78% were aged between 21 and 60. Fifty-four patients were classified as Type A, and 50% had surgery - 85,18% by anterior approach, with corpectomy associated or not with arthrodesis; 77 patients were classified as Type B, and 85,7% had surgery - 77,3% by posterior approach, considering the ligament lesion; 21 patients were classified as Type C, and 81% had surgery - 94,1% posterior approach; finally, 11 patients were classified as Multiple Level, and 54,5% had surgery - 83,3% by posterior approach, none by anterior approach alone. CONCLUSION: the data obtained may contribute to the standardization of the care given to the cervical traumatized patient and make the treatment results more predictable. The experience gathered and converted to numbers will help in the choice of the surgical approach.OBJETIVO: definir las características epidemiológicas de la población víctima, clasificar las fracturas subaxiales, y analizar cómo los tratamientos quirúrgicos fueron realizados, teniendo ellos mismos como resultado la manera quirúrgica elegida - anterior, posterior o combinada -, y juntar estos datos para observar estándares del tratamiento para el cuidado óptimo de esta gente enferma. MÉTODOS: análisis retrospectiva en prontuarios médicos de 222 pacientes atendidos y tratados, entre 2004 y Marzo de 2009 con fracturas, fracturas-luxaciones y luxaciones cervicales. De estos 222 pacientes, 163 correspondieron a los que tenían fracturas subaxiales clasificables por el método AO, es decir, aproximadamente un 73.4% del total. RESULTADOS: los 83% de los pacientes eran hombres y el aproximadamente 78% tenían entre 21 y 60 años de la edad. Habían sido clasificados como Tipo A, 54 pacientes, el 50% habían sido operados - el 85.18%, vía anterior, con corpectomía asociada o no a la artrodese; fueron clasificados como Tipo B, 77 pacientes, y el 85.7% que habían sido operados - el 77.3% vía posterior, teniendo en cuenta el lesión ligamentar; como Tipo C, 21 pacientes fueron clasificados, y el 81% que habían sido operados - el 94.1% de la vía posterior; y como Niveles Múltiples, 11 pacientes fueron considerados, 54.5% fueron operados - el 83.3% de la vía posterior, ningún por la vía anterior sola. CONCLUSIÓN: los datos obtenidos pueden contribuir con la normalización del cuidado del paciente con traumatismo cervical y tornar los resultados más predecibles. La experiencia acumulada y invertida en números facilitará la elección de los medios quirúrgicos

Granulocyte Colony-Stimulating Factor Combined with Methylprednisolone Improves Functional Outcomes in Rats with Experimental Acute Spinal Cord Injury

OBJECTIVES: To evaluate the effects of combined treatment with granulocyte colony-stimulating factor (G-CSF) and methylprednisolone in rats subjected to experimental spinal cord injury. METHODS: Forty Wistar rats received a moderate spinal cord injury and were divided into four groups: control (no treatment); G-CSF (G-CSF at the time of injury and daily over the next five days); methylprednisolone (methylprednisolone for 24 h); and G-CSF/Methylprednisolone (methylprednisolone for 24 h and G-CSF at the time of injury and daily over the next five days). Functional evaluation was performed using the Basso, Beattie and Bresnahan score on days 2, 7, 14, 21, 28, 35 and 42 following injury. Motor-evoked potentials were evaluated. Histological examination of the spinal cord lesion was performed immediately after euthanasia on day 42. RESULTS: Eight animals were excluded (2 from each group) due to infection, a normal Basso, Beattie and Bresnahan score at their first evaluation, or autophagy, and 32 were evaluated. The combination of methylprednisolone and G-CSF promoted greater functional improvement than methylprednisolone or G-CSF alone (

Evaluation of the effect of intrathecal GM1 in 24, 48, and 72 hours after acute spinal cord injury in rats

Objective: The aim of this study was to evaluate the best timing and feasibility of intrathecal application of sodium monosialoganglioside (GM1) after spinal cord contusion in Wistar rats as an experimental model. Methods: Forty Wistar rats were submitted to contusion spinal cord injury after laminectomy. The animals were randomized and divided into four groups: Group 1 – Intrathecal application of GM1 24 hours after contusion; Group 2 – Intrathecal application of GM1 48 hours after contusion; Group 3 – intrathecal application of GM1 72 hours after contusion; Group 4 – Sham, with laminectomy and intrathecal application of 0.5 mL of 0.9% saline solution, without contusion. The recovery of locomotor function was evaluated at seven different moments by the Basso, Beattie, and Bresnahan (BBB) test. They were also assessed by the horizontal ladder, with sensory-motor behavioral assessment criteria, pre-and postoperatively. Results: This experimental study showed better functional scores in the group submitted to the application of GM1, with statistically significant results, showing a mean increase when evaluated on known motor tests like the horizontal ladder and BBB, at all times of evaluation (p < 0.05), especially in group 2 (48 hours after spinal cord injury). Also, fewer mistakes and slips over the horizontal ladder were observed, and many points were achieved at the BBB scale analysis. Conclusion: The study demonstrated that the intrathecal application of GM1 after spinal cord contusion in Wistar rats is feasible. The application 48 hours after the injury presented the best functional results

Predictive factors for perioperative blood transfusion in surgeries for correction of idiopathic, neuromuscular or congenital scoliosis

OBJECTIVE: To evaluate the association of clinical and demographic variables in patients requiring blood transfusion during elective surgery to treat scoliosis with the aim of identifying markers predictive of the need for blood transfusion. METHODS: Based on the review of medical charts at a public university hospital, this retrospective study evaluated whether the following variables were associated with the need for red blood cell transfusion (measured by the number of packs used) during scoliosis surgery: scoliotic angle, extent of arthrodesis (number of fused levels), sex of the patient, surgery duration and type of scoliosis (neuromuscular, congenital or idiopathic). RESULTS: Of the 94 patients evaluated in a 55-month period, none required a massive blood transfusion (most patients needed less than two red blood cell packs). The number of packs was not significantly associated with sex or type of scoliosis. The extent of arthrodesis (r = 0.103), surgery duration (r = 0.144) and scoliotic angle (r = 0.004) were weakly correlated with the need for blood transfusion. Linear regression analysis showed an association between the number of spine levels submitted to arthrodesis and the volume of blood used in transfusions (p = 0.001). CONCLUSION: This study did not reveal any evidence of a significant association between the need for red blood cell transfusion and scoliotic angle, sex or surgery duration in scoliosis correction surgery. Submission of more spinal levels to arthrodesis was associated with the use of a greater number of blood packs