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-The purpose of this study was to compare patients with lumbar spondylolisthesis submitted to two different surgical approaches, and evaluate the results and outcomes in both groups. In a two-year period, 60 adult patients with lumbar spondylolisthesis, both isthmic and degenerative, were submitted to surgery at the Biocor Institute, Brazil. All patients were operated on by the same surgeon (FLRD) in a single institution, and the results were analyzed prospectively. Group I comprised the first 30 consecutive patients that were submitted to a posterior lumbar spinal fusion with pedicle screws (PLF). Group II comprised the last 30 consecutive patients submitted to a posterior lumbar interbody fusion procedure (PLIF) with pedicle screws. All patients underwent foraminotomy for nerve root decompression. Clinical evaluation was carried out using the Prolo Economic and Functional Scale and the Rolland-Morris and the Oswestry questionnaire. Mean age was 52.4 for Group I (PLF), and 47.6 for Group II (PLIF). The mean follow-up was 3.2 years. Both surgical procedures were effective. The PLIF with pedicle screws group presented better clinical outcomes. Group I presented more complications when compared with Group II. Group II presented better results as indicated in the Prolo Economic and Functional Scale.KEy wORDS: posterior lumbar interbody fusion (PLIF), posterior lumbar fusion, spondylolisthesis, pedicle screws, lumbar spine, spinal instrumentation.estudo comparativo entre fusão lombar posterior com parafuso pedicular e fusão intersomáti-ca lombar posterior associada com parafuso pedicular em espondilolistese no adulto RESUMO -O objetivo foi comparar dois grupos de pacientes portadores de espondilolistese lombar que foram submetidos a dois procedimentos cirúrgicos distintos, avaliando os resultados clínicos levando em consideração a qualidade de vida. Durante o período de 1998 a 2001 sessenta pacientes portadores de espondilolistese da coluna lombar ístmica e degenerativa foram submetidos a tratamento cirúrgico no Hospital Biocor em Belo Horizonte, por um mesmo cirurgião foram analisados prospectivamente. Os primeiros trinta pacientes foram submetidos a fusão posterior com parafusos pediculares e os trinta seguintes a fusão posterior com parafusos pediculares associada a fusão intersomática posterior. Os pacientes foram submetidos a liberação radicular com laminectomia e foraminotomia. A avaliação clínica foi feita utilizando as escalas de Prolo Econômico e Funcional, o questionário de Rolland-Morris e de Oswestry. Os resultados clínicos apresentaram que os dois procedimentos realizados foram eficazes. Houve maior número de complicações relacionadas com a biomecânica no grupo que foi submetido somente à fusão posterior e o grupo submetido à fusão posterior associada a fusão intersomática apresentou melhores resultados com retorno as atividades diárias e melhora da qualidade de vida.PALAvRAS-CHAvE: fusão intersomática lombar posterior, fusão lombar posterior, espondilolistese, fixação pedicular, coluna lombar,...

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RESUMO -A cisticercose é a doença parasitária que mais comumente envolve o sistema nervoso central. O acometimento espinhal varia de 0,7% a 5,8%, sendo que a forma intramedular é uma manifestação rara. Relatamos um caso de cisticercose intramedular ao nível de C4-C5, em paciente de 52 anos, feminina, atendida no serviço de Neurologia e Neurocirurgia da Santa Casa de Belo Horizonte. Foi submetida a tratamento cirúrgico para exérese da lesão, com boa evolução pós-operatória e recuperação progressiva dos déficits. Concluimos que apesar de patologia rara (foram encontrados 45 casos após revisão da literatura), deve entrar no diagnóstico diferencial de lesões medulares, especialmente em pacientes com história de neurocisticercose e naqueles que vivem ou procedem de regiões onde é a doença é endêmica.PALAVRAS-CHAVE: cisticercose, medula espinhal. Intramedular cysticercosis: case reportABSTRACT -Cysticercosis is the most ordinary parasitary disease involving the nervous system. The involvement of the spine is rare, ranging from 0.7% to 5.8%, and the intramedullary incidence is rather uncommon. We report the case of a 52-year-old female patient with intramedullary cysticercosis at the C4-C5 level, treated at the Neurology and Neurosurgery Service of Santa Casa de Belo Horizonte. The patient was operated with the complete exeresis of the lesion and had a good outcome. Forty-five cases of intramedullary cysticercosis were found in the literature review. We conclude that although it is a rare pathology, intramedullary cysticercosis should be included in the differential diagnosis of intramedullary lesions, mainly in cases of patients with previous diagnosis for neurocysticercosis and also of those who live in endemic areas. KEY WORDS: spinal cord, cysticercosis.A cisticercose (CI) é a doença parasitária que mais envolve o sistema nervoso central (SNC). O acometimento espinhal ocorre em 0,7% a 5,8% dos pacientes, sendo que a forma intramedular é uma rara manifestação [1][2][3][4][5] . Apesar de frequentemente estar associada à lesões cerebrais pode apresentarse isoladamente 1 . Pode ser classificada em: vertebral, extradural, leptomeníngea (subaracnóidea) e intramedular 2 , sendo a extradural de ocorrência excepcional, e as formas leptomeníngeas seis a oito vezes mais comuns que as intramedulares 3 .Tendo em vista a raridade dessa patologia, decidimos pelo relato do presente caso, analisando aspectos patogênicos, clínicos, radiológicos e terapêuticos da doença, através de revisão da literatura.

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Background: Primary spinal cord tumors are rare and heterogeneous, and their prevalence varies among the studies. Few articles have evaluated the prevalence, characteristics, and histological types of spinal cord tumors in Latin American populations. This study aimed to analyze the histological types and clinical aspects of a series of consecutive patients diagnosed with primary spinal cord tumors who underwent surgical treatment in a single Brazilian institution and to compare them with the literature. Methods: This is a case series study, with retrospective analysis of all consecutive adult patients who underwent surgical treatment for primary spinal cord tumors in a single center between January 1997 and April 2021. Data analyzed included age at surgery, sex, anatomical location, histopathological diagnosis, clinical presentation, and neurological status at discharge. Results: A total of 104 patients (53 women [51.0%]; mean age, 49.0 ± 16.7 years [range, 19-87 years]) were included in the analysis. Among the tumors, 83.7% were benign, and 36.5% involved the thoracic spine; intradural extramedullary lesions comprised 52.9% of the tumors, and the most prevalent were schwannomas (26.9%) and meningiomas (18.3%). Among the patients, 55% and 50% presented with pain and motor deficit, respectively, and the deficit improvement rate was greater than the worsening rate at the immediate postoperative period and discharge. Conclusions: Our series highlights the heterogeneity of primary spinal cord tumors compared to other studies. Further large population studies are necessary to elucidate the epidemiology of this disease.

This guideline aims to analyze the effect of the section of the filum terminale in the treatment of Chiari malformation type I symptoms. CONFLICT OF INTEREST There is no conflict of interest related to this review that can be declared by any of the authors. * the maximum miNorS score for non-randomized studies is 16 points. therefore, the methodological quality of both studies selected is low.