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      Avaliação dos resultados clínicos e radiográficos de pacientes submetidos à ressecção de hemivértebra nas deformidades congênitas da coluna vertebral Translated title: Evaluation of clinical and radiographic results in patients undergoing resection of hemivertebra in congenital deformities of the spine Translated title: Evaluación de los resultados clínicos y radiográficos de los pacientes sometidos a resección de hemivértebra en deformidades congénitas de la columna vertebral

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          Abstract

          OBJETIVO: A proposta do estudo foi determinar nossos resultados clínicos e radiográficos de pacientes com deformidades congênitas da coluna vertebral submetidos à ressecção de hemivértebra por via posterior isolada e correção com instrumentação posterior e fusão. MÉTODOS: Registros de 31 pacientes submetidos à ressecção de hemivértebra no período de 2003 a 2010 foram revistos para identificar idade e sexo, grau de correção, níveis da artrodese, quadro neurológico, perda sanguínea, tempo cirúrgico e complicações. RESULTADOS: Foram identificados 22 pacientes com escoliose e Cobb pré-operatório médio de 46.66°(20-88°) e 9 pacientes com cifose e média angular de 83.54°(13-137°). Vinte e quatro pacientes eram do sexo feminino e 7 do sexo masculino. Foram 13 pacientes adolescentes e 18 crianças (1-19 anos). A ressecção de hemivértebra foi realizada em 1 nível (64%), 2 níveis (32%) e 3 níveis (4%). As taxas de correção da escoliose e cifose foram 63.8 e 40.1% e as médias angulares pós-operatórias foram 16.88° e 50°, respectivamente. Complicações ocorreram em 7 pacientes: pseudartrose, cifose juncional, neurite óptica, déficit neurológico, infecção de ferida operatória e óbito. A média de perda sanguínea foi de 1132ml (300ml-3500ml) e o tempo cirúrgico foi de 7.15 horas (4-13 horas). CONCLUSÕES: A ressecção de hemivértebra é uma valiosa técnica no tratamento das deformidades congênitas angulares e uma alternativa eficiente que oferece correção satisfatória nos planos coronal e sagital sem a necessidade de uma abordagem anterior.

          Translated abstract

          OBJECTIVE: The purpose of this study was to determine our clinical and radiographic results of patients with congenital deformities of the spine underwent to single-stage posterior hemivertebra resection and correction with segmental posterior instrumentation and fusion. METHODS: The records of 31 consecutive patients who had undergone to hemivertebra resection between 2003 and 2010 were reviewed to identify age and sex, correction rates, fusion levels, neurological status, blood loss, time of surgery and complications. RESULTS: We identified 22 patients with scoliosis and pre-operative Cobb averaged 46.66° (range 20-88°) and 9 patients with kyphosis and averaged 83.54° (range 13-137°). Twenty four patients were female and 7 were male. Thirteen patients were teenagers and 18 were children (range 1-19 years old). The hemivertebrae resection was done in 1 level (64%), 2 levels (32%) and 3 levels (4%). The correction rates for scoliosis and kyphosis were 63.8% and 40.1% and pos-operative Cobb averaged was 16.88° and 50°. Complications occurred in 7 patients: pseudoarthrosis, junctional kyphosis, optic neuritis, neurologic deficit, wound infection, and death. The average blood loss was 1132ml (range 300ml-3500ml) and time of the surgery was 7.15 hours (range 4-13 hours). CONCLUSIONS: Posterior hemivertebra resection is a valuable technique to assessment angular congenital spinal deformities and an efficient alternative that offers satisfactory correction in both coronal and sagittal planes without need for anterior approach.

          Translated abstract

          OBJETIVO: El objetivo de nuestro estudio fue determinar los resultados clínicos y radiográficos de los pacientes con deformidades congénitas de la columna vertebral que se sometieron a la resección de hemivértebra por el acceso aislado posterior con instrumentación posterior y fusión. MÉTODOS: Registros de 31 pacientes sometidos a resección de la hemivértebra el período 2003 a 2010 fueron revisados para identificar edad y sexo, grado de corrección, niveles de la fusión, estado neurológico, pérdida de sangre, tiempo quirúrgico y complicaciones. RESULTADOS: Se identificaron 22 pacientes con escoliosis y Cobb promedio preoperatorio de 46,66° (20°-88°) y 9 pacientes con un ángulo medio de cifosis y 83,54° (13°-137°). Veinticuatro pacientes eran hombres y siete mujeres. Hubo 13 adolescentes y 18 niños (1-19 años). La resección de hemivértebra se realizó en un nivel (64%), dos niveles (32%) y tres niveles (4%). Los porcentajes de corrección de la escoliosis y la cifosis fueron 63,8% y el 40,1% y el ángulo de post-operatorio promedio fue de 16.88° y 50°, respectivamente. Se presentaron complicaciones en 7 pacientes, pseudoartrosis, cifosis de la unión, neuritis óptica, déficit neurológico, infección de la herida y muerte. La pérdida de sangre promedio fue de 1132 ml (300 ml-3500 ml) y el tiempo quirúrgico medio fue de 7,15 horas (4-13 horas). CONCLUSIONES: La resección de hemivértebra es una técnica valiosa en el tratamiento de deformidades angulares congénitas y una alternativa eficaz que proporciona corrección satisfactoria en el plano coronal y sagital sin la necesidad de una vía anterior.

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          THE OPERATIVE REMOVAL OF AN ACCESSORY VERTEBRA

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            Scoliosis

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              Spinal wedge osteotomy by a single posterior approach for correction of severe and rigid kyphosis or kyphoscoliosis.

              Seven patients with severe angular kyphotic deformity of the spine were treated by circumferential spinal wedge osteotomy using a single posterior approach. To evaluate the surgical outcomes for seven patients with severe angular kyphosis or kyphoscoliosis treated by spinal wedge osteotomy. Excellent surgical outcomes have been reported for procedures such as hemivertebra excision, vertebral body resection, and spinal osteotomy for angular kyphosis or kyphoscoliosis. However, the safety and efficacy of these procedures for severe and rigid deformities have not been established. The surgical procedure involves circumferential exposure of the apex vertebra to the anterior aspect using a single posterior approach. Sparing only the spinal cord, the surgeon performs circumferential wedge bone resection, closure, correction, and stabilization by instrumentation while monitoring the spinal cord. Seven patients (3 kyphotics and 4 kyphoscoliotics) treated by this procedure were evaluated for a minimum of 2 years. Underlying conditions comprised five cases of congenital deformity with hemivertebrae and two cases of skeletal dysplasias. The mean age at surgery was 16.5 years, and the mean follow-up period was 6.9 years. Before surgery, the mean kyphotic curve was 105.4 degrees (range, 68-150 degrees ), and the mean scoliotic curve was 85.3 degrees (range, 60-132 degrees ). After surgery, the curves averaged 48.9 degrees and 40 degrees, respectively, yielding corrections of 52.9% and 54.9%. The mean posterior trunk shift in global sagittal balance was 21 mm before surgery, becoming 3 mm after surgery. Progressive spinal cord dysfunction had developed in three patients before surgery. In all three, postoperative neurologic improvement was observed. Postoperative complications consisted of transient, unilateral leg paresis in two patients. No incidents of infection or pseudarthrosis were observed. Spinal wedge osteotomy by the single posterior approach is a reliable and safe surgical technique for correcting severe rigid angular kyphosis or kyphoscoliosis.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                coluna
                Coluna/Columna
                Coluna/Columna
                Sociedade Brasileira de Coluna (São Paulo )
                2177-014X
                2013
                : 12
                : 1
                : 17-20
                Affiliations
                [1 ] Universidade Estácio de Sá Brazil
                [2 ] Instituto Nacional de Traumatologia e Ortopedia Brazil
                [3 ] Instituto Nacional de Traumatologia e Ortopedia Brazil
                [4 ] Universidade Federal do Rio de Janeiro Brazil
                [5 ] Instituto Nacional de Traumatologia e Ortopedia Brazil
                Article
                S1808-18512013000100003
                10.1590/S1808-18512013000100003
                147645f9-cfb2-4042-81a9-723c323f6190

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1808-1851&lng=en
                Categories
                ORTHOPEDICS
                REHABILITATION

                Orthopedics,Physiotherapy
                Spine,Scoliosis,Orthopedic procedures,Columna vertebral,Escoliosis,Procedimientos ortopédicos,Coluna vertebral,Escoliose,Procedimentos ortopédicos

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