OBJETIVO: a proposta deste trabalho é comparar os resultados clínicos e radiológicos dos pacientes submetidos à artrodese transforaminal aberta e minimamente invasiva. MÉTODOS: quarenta e cinco pacientes foram submetidos à artrodese lombar transforaminal pelo Grupo de Cirurgia Espinhal do Hospital Lifecenter/Ortopédico de Belo Horizonte, no período de Dezembro de 2005 a Maio de 2007, sendo 15 no grupo de artrodese aberta e 30 pacientes do grupo de artrodese minimamente invasiva (MIS). As indicações para a artrodese intersomática foram: doença degenerativa do disco, associada ou não a hérnia de disco ou estenose do canal; espondilolistese de baixo grau espondilolítica ou degenerativa; e síndrome pós-laminectomia/discectomia. As variáveis analisadas foram: tempo de cirurgia, tempo de internação hospitalar, necessidade de hemotransfusão, escala analógica visual de dor (VAS) lombar e dos membros inferiores, Oswestry, índice de consolidação da artrodese e retorno ao trabalho. RESULTADOS: o seguimento mínimo foi de 24 meses. Havia oito homens e sete mulheres no Grupo Aberto e 17 homens e 13 mulheres no Grupo MIS. O tempo cirúrgico médio foi de 222 minutos e 221 minutos, respectivamente. Houve melhora significativa da VAS e Oswestry no pós-operatório em ambos os grupos. O tempo de internação hospitalar variou de 3,3 dias para o Grupo Aberto e 1,8 dias para o Grupo MIS. O índice de fusão obtido foi de 93,3% em ambos os grupos. Houve necessidade de hemotransfusão em três pacientes no Grupo Aberto (20%) e nenhum caso MIS. CONCLUSÕES: a transforaminal lumbar interbody fusion (TLIF) minimamente invasiva apresenta resultados similares em longo prazo quando comparado à TLIF aberta, com os benefícios adicionais de menor morbidade pós-operatória, menor período de internação e reabilitação precoce.

OBJECTIVE: To present some technical considerations about interbody fusion by direct lateral retroperitoneal transpsoas approach and its initial results. METHODS: Non-randomized prospective study of 14 patients undergoing interbody fusion via lateral approach, with evaluation of initial results and complications. RESULTS: We collected and analyzed data from 14 patients with a total of 27 levels operated. The average operative time was 146 minutes and blood loss was on average less than 50 ml. Ten patients required supplemental percutaneous fixation with pedicle screws. VAS scores for the lumbar region and lower limbs and ODI had significant improvement in the postoperative period. There was an associated case of postoperative infection and thromboembolism that required reoperations. CONCLUSION: This technique has revolutionized the care of patients requiring fusion of T6-7 to L4-5. Following the five basic steps and using intraoperative monitoring, this technique is safe and reproducible with encouraging clinical results and low rate of serious complications.

Objective: To compare clinical outcomes in laborers who have undergone open transforaminal interbody fusion (TLIF) and minimally invasive transforaminal interbody fusion (MIS TLIF). Methods: 78 patients were submitted to lumbar arthrodesis by the same two spine surgeons partners from January 2008 to December 2012. Forty-one were submitted to traditional open arthrodesis and 37 to the minimally invasive procedure. Three patients were not included because they had already retired from work. The analyzed variables were length of hospitalization, length of follow-up, type of access (TILF or MIS TLIF), need for blood transfusion, percentage of improvement or worsening after surgery, pre-and postoperative VAS scale, time off work, pre-and postoperative Oswestry disability index, and general aspects of the laborers such as age, education, profession, working time, amount of daily weight carried at work, and use or not of personal protective equipment. Results: Time off work was longer in the TLIF group (average of 9.84 months) compared with the MIS TLIF group (average of 3.20 months). Significant improvement in postoperative VAS and Oswestry was achieved in both groups. Average length of hospitalization was 5.73 days for the TLIF group and 2.76 days for the MIS TLIF group. Conclusions: Minimally invasive transforaminal lumbar interbody fusion presents similar results when compared to open TLIF, but has the benefits of less postoperative morbidity, shorter hospitalization times, and faster rehabilitation in laborer patients.Keywords: Arthrodesis; Lumbar vertebrae; Spinal fusion; Minimally invasive surgical procedures; Occupational health. rEsUMO Objetivo: Comparar resultados clínicos emtrabalhadores braçais submetidos à artrodese transforaminal aberta (TLIF) e minimamente invasiva (MIS-TLIF

OBJETIVOS: Analisar as correções obtidas através da instrumentação segmentar seletiva torácica, utilizando parafusos pediculares, em pacientes portadores de escoliose idiopática com modificador lombar B ou C; verificar a segurança da técnica e a descompensação das curvas compensatórias não instrumentadas; observar a perda de correção das curvas instrumentadas e não instrumentadas com o tempo. MÉTODOS: Estudo retrospectivo de pacientes portadores de escoliose idiopática com curvas 1B, 1C, 2B e 2C submetidos a tratamento cirúrgico por via posterior utilizando parafusos pediculares. As variáveis analisadas foram: sexo, idade, níveis acometidos pela escoliose, níveis instrumentados, número de parafusos pediculares utilizados, classificação segundo Lenke, ângulos de Cobb pré-operatórios coronal e sagital (incluindo inclinações), ângulos de Cobb no pós-operatório imediato e tardio e perda da correção das curvas com o tempo. Foram submetidos 20 pacientes portadores de escoliose idiopática à tratamento cirúrgico seletivo de agosto/2004 a outubro/2007. Destes, 18 permanecem em acompanhamento e foram incluídos no trabalho porque satisfizeram os critérios de inclusão. RESULTADOS: A média do ângulo de Cobb no pré-operatório foi de 52,61º, no pós-operatório imediato foi de 17,89º e no pós-operatório tardio, 22,15º, com média de correção imediata de 34,72° e perda de correção média 4,26º em 39,78 meses. Obteve-se uma correção espontânea média imediata de 22,62° nas curvas compensatórias não instrumentadas e perda média de 2,72º dessa correção em 39,78 meses. Não ocorreram complicações neurológicas, infecciosas ou descompensações das curvas lombares. CONCLUSÃO: Todos os pacientes apresentaram melhora substancial em termos estéticos, clínicos e radiológicos. Ocorreram perdas parciais da correção com o tempo, porém sem culminarem em descompensação das curvas não instrumentadas. Este trabalho mostra indícios de eficácia e segurança do tratamento cirúrgico seletivo da escoliose idiopática utilizando-se parafusos pediculares a médio/longo prazo.

Trabalho realizado no Hospital Ortopédico /Lifecenter de Belo Horizonte (MG), Brasil. Correspondência: QQSL11, área especial 1/17 -Taguatinga-Sul -Taguatinga. DF. Brasil. brenofrota_23@hotmail.com RESUMO Objetivo: Determinar se a abordagem MIS para artrodese lombar em um nível reduz as alterações estruturais do multífido, tais como a diminuição de sua área de secção transversa e a degeneração gordurosa patológica, quando comparada a uma abordagem convencional aberta. Métodos: Entre Janeiro de 2007 e Janeiro de 2010, foram avaliados 27 pacientes submetidos a procedimento cirúrgico de artrodese aberta e MIS. Realizou-se RNM no pós-operatório, no intervalo entre 12 e 36 meses após a cirurgia, com vizualizacao do músculo multífido para seu estudo. Resultados: Todos os pacientes foram operados num nível de artrodese através da técnica aberta e MIS. Conclusão: Não foram encontradas diferenças significativas referentes às variáveis sexo e idade com a área e trofismo do multífido em ambos os lados.Descritores: Artrodese; Vértebras lombares; Procedimentos cirúrgicos minimamente invasivos. ABSTRACTObjective: Determine if the minimally invasive surgery (MIS) approach for lumbar fusion in a determined level can reduce structural changes in the multifidus muscle, such as decrease their cross-sectional area and pathologic fatty degeneration, compared to a conventional open approach. patients undergoing surgical procedure and arthrodesis MIS were evaluated. Open MRI was performed in the postoperative period, between 12 and 36 months after surgery, with visualization of the multifidus muscle for its study. Results: All patients were operated on a level of arthrodesis using the open technique and MIS. Conclusion: No significant differences were found regarding the age and sex with the area and tropism of multifidus muscle on both sides. RESUMENObjetivo: Determinar si un enfoque de MIS, para la artrodesis lumbar en un nivel, reduce los cambios estructurales en el multífido, como la reducción de su área de sección transversal y la patología de la degeneración grasa, en comparación con un enfoque abierto convencional. Métodos: Entre enero de 2007 y enero de 2010, se evaluaron 27 pacientes sometidos a procedimiento quirúrgico de artrodesis abierta y MIS. Se realizó RNM en el posoperatorio, entre 12 y 36 meses después de la cirugía, con la visualización del músculo multífido para su estudio. Resultados: Todos los pacientes fueron operados en un nivel de artrodesis con la técnica abierta y MIS. Conclusión: No se encontraron diferencias significativas respecto a las variables de sexo y edad, con el área y el trofismo del multífido en ambos lados. Descriptores: Artrodesis; Vértebras lumbares; Procedimientos quirúrgicos mínimamente invasivos. ESTUDO COMPARATIVO DO TROFISMO DO MULTÍFIDO NA ARTRODESE LOMBAR ABERTA VERSUS MINIMAMENTE INVASIVA COMPARATIVE STUDY OF TROPISM OF THE MULTIFIDUS MUSCLE IN OPEN LUMBAR ARTHRODESIS VERSUS MINIMALLY INVASIVE ARTHRODESIS ESTUDIO COMPARATIVO DE TROFISMO DEL MULTÍFIDO EN LA ARTRODESIS LUMBAR ABIERTA VERSU...

Introduction The objective of this study is to relate the use of intraoperative electromyography surgical time, proper placement of screws, type of curve and time for screw in idiopathic scoliosis correction surgery in a group of surgeons of Belo Horizonte. Methods This was a retrospective study of 80 patients undergoing surgical treatment for idiopathic scoliosis correction between December 2008 and January 2015. All patients was performed electromyographic monitoring (EMG) intraoperative by a single column group of surgeons Belo Horizonte. EMG was performed with stimulation of pedicle screws in patients undergoing instrumentation using pedicle screws and fasteners. Results It was observed that 85% were female, with a mean age of 17 years (minimum of 6 years and maximum of 34 years), 37.5% of the cases represented the curve was idiopathic Lenke 1AN. 60.0% of all surgical cases had EMG change, and of these 1.3% had already had deficits Pre-procedure and 3.75% of cases post deficits. Of the total cases analyzed 66.3% were positive for real results. Conclusion Intraoperative monitoring with EMG is a very important tool for the surgical treatment of patients with scoliosis patients with instrumentation with pedicle screws. Through this feature you can check if the screw is on the correct path contributing to decrease the error rate, post surgical arthrodesis allowing the change in surgical strategy. Besides contributing to the positioning time reduction of the screw and the end of the surgical time.

Objective: The objective of this study is to relate the use of intraoperative electromyography with surgical time, proper placement of screws, type of curve and time spent per screw in idiopathic scoliosis correction surgery in a group of surgeons from Belo Horizonte. This study used the database of protocol evaluation of patients operated in the service, and separately analyzed the results of motor and somatosensory potentials. Methods: Retrospective study of 80 patients undergoing surgery for correction of idiopathic scoliosis between December 2008 and January 2015. A single group of Belo Horizonte spine surgeons performed the intraoperative electromyographic (EMG) monitoring. EMG was performed with stimulation of pedicle screws in patients undergoing instrumentation with pedicle screws as fixation elements. Results: The sample consisted of 85% females (mean age 17 years) and 37.5% of cases had classification type 1AN of Lenke. Of the total surgical cases, 60% had EMG changes. Of the total cases analyzed, 66.3% were true positives for the result. Conclusion: Intraoperative monitoring with EMG is a very important tool for the surgical treatment of patients with scoliosis undergoing instrumentation with pedicle screws. It enables to check if the screw is located on the correct path, helping to decrease the error rate and providing corrections to the surgical approach through a change of strategies. Moreover, it contributes to decrease the time to screw positioning and the total surgical time.

Objective The aim of this study was to correlate the parameters of shoulder alignment with the Cobb angle value of the proximal thoracic curve in the pre and postoperative periods. Methods A retrospective data collection study was carried out, in which 30 medical records and radiographic examinations of patients submitted to surgical treatment for correction of deformity in AIS were performed in a single center from 2010 to 2017. Results The risk of CHD> 3 mm at 1 year postoperatively was similar between patients who had high thoracic curve (HTC) less than or equal to 25 degrees and those who had HTC greater than 25 degrees and not structured (relative risk = 1.75, P-value = 0.552). The risk of presenting CA> 2 degrees in the postoperative period of 1 year was similar between patients having HTC less than or equal to 25 degrees and those who had HTC greater than 25 degrees and not structured (relative risk = 1.31, P-value = 0.567). Conclusions We observed that when the proximal thoracic curve is not structured, even with a high Cobb angle, there is no need for instrumentation, presenting a satisfactory shoulder alignment in the postoperative period . Level of Evidence III; Retrospective and Comparative.