Purpose: The objective was to compare the traditional microdiscectomy with percutaneous endoscopic lumbar discectomy for the treatment of disc herniations regarding pain, disability, and complications. Methods: Randomized clinical trial with 47 patients with disc herniations treated with 2 different surgical techniques: traditional microdiscectomy or percutaneous endoscopic lumbar discectomy. Forty-seven patients were divided into 2 groups and monitored for 12 months. Irradiated and low back pain were evaluated with the visual analog scale. Surgery complications were recorded. Results: After surgery, the sciatica and disability improved significantly but without significant differences between the groups. Improvements in back pain were significant until the third month. There were no statistical differences between groups regarding recurrence, infection, and the need for reoperation. Conclusions: Endoscopic discectomy results are similar to those of conventional microdiscectomy regarding pain and disability improvement. Postoperative lumbar pain is less intense with endoscopic discectomy than conventional microdiscectomy only during the first 3 months. Endoscopic discectomy is a safe and efficient alternative to microdiscectomy. Clinical Trials: Trial protocol registration number: RBR-5symrd (http://www.ensaiosclinicos.gov.br).

RESUMOObjetivo: Avaliar as características das infecções pós-operatórias e determinar a resolução das mesmas em relação ao número de limpezas e de agentes infectantes. Método: Foram avaliados todos os prontuários dos pacientes que evoluíram com infecção pós-operatória durante 30 meses para análise e correlação de diversas variáveis. Nesses 30 meses, 40 pacientes evoluíram com infecção pós-operatória de um total de 410 cirurgias. Foram excluídos os casos de infecção primária da coluna (osteomielite ou espondilodiscite) totalizando três casos. Variáveis relacionadas ao paciente, ao procedimento e à evolução foram avaliadas e correlacionadas com as variáveis chaves: número de limpezas cirúrgicas e de agentes infectantes isolados nas culturas. Resultados: A taxa de infecção pós-operatória foi de 9,83%. Foram relacionadas as diversas variáveis estudadas com o número de limpezas cirúrgicas realizadas e não foi possível estabelecer uma relação. No entanto verificou-se que os pacientes com maior número de procedimentos cirúrgicos apresentavam maior taxa de dor pós-operatória. Conclusão: Pacientes submetidos a um maior número de procedimentos apresentaram mais dor na evolução pós-operatória. Não houve correlação estatisticamente significativa entre o número de limpezas ou de agentes com as demais variáveis. Um maior número de pacientes no estudo pode ser necessário para identificar outras relações. RESUMENObjetivo: Evaluar las características de infecciones postoperatorias y determinar la solución de ellas con relación al número de limpiezas y desbridamientos quirúrgicos, y agentes infecciosos. Método: Recolectamos, para un período de 30 meses, todos los registros de pacientes que tuvieron infección postoperatoria y varias variables fueron analizadas y correlacionadas. En esos 30 meses, 40 pacientes, de un total de 410 cirugías, tuvieron infección postoperatoria. Excluimos casos de infección primaria de la espina dorsal (osteomielitis o espondilodiscitis) totalizando 3 casos. Variables relativas al paciente, realización de tratamientos y resultados fueron evaluadas y correlacionadas con las variables clave: número de desbridamientos quirúrgicos y cultivos aislados de agentes infecciosos. Resultados: La tasa de infección, después de la cirugía, fue 9,83%. Algunas variables fueron relacionadas con el número de desbridamientos

Study Design: Prospective cohort study. Objective: The lateral transpsoas access is a retroperitoneal approach for the lumbar spine to perform the lateral lumbar interbody fusion (LLIF), an intersomatic arthrodesis performed with a cage placed on the lateral borders of the epiphyseal ring. The procedure can be used to provide indirect decompression of the nervous structures through the discectomy and restoration of the disc height. The objective of the present study was to evaluate the indirect decompression following LLIF both with radiological and clinical parameters. Methods: Prospective clinical and radiological study in a single center with 20 patients diagnosed with 1- or 2-level degenerative lumbar stenosis. Radiological analysis on magnetic resonance imaging included foramen height, canal area, canal diameter, and disc height. Clinical outcomes included visual analogue scale (VAS) and Oswestry Disability Index (ODI) collected up to 12 months. Complications and reoperations were recorded. Results: In total, 25 levels were treated. No reoperation was required. Disc height was increased by an average of 25% ( P < .001). The canal area increased from 109 to 149 mm2 ( P < .001) and from 9.3 to 12.2 mm ( P < .001) in anteroposterior diameter. The foramen area demonstrated the effect of indirect decompression on both sides ( P < .001). The height of the foramen showed significant average increase of 2.8 mm ( P < .001). The results from VAS and ODI questionnaires confirmed the clinical effect of indirect decompression. Conclusion: We observed that indirect decompression by the LLIF method is feasible both radiologically and clinically with a low rate of complications and reoperations.

No abstract