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• W3179408802 abstract "To analyze the results of biomechanical assays of the fixation of Pauwels type II femoral neck fractures in synthetic bones, using two parallel cannulated screws or three cannulated screws in an inverted pyramid formation.Ten Brazilian-made synthetic bones were divided into 2 groups. Groups A and B utilized three and two cannulated screws, respectively, after osteotomy in the middle third of the femur, perpendicular to the axis of the femoral neck, simulating a Pauwels type II femoral neck fracture. The resistance of these fixations was analyzed by compression on the axis of the force resulting from hip compression, simulated with a manual hydraulic press. The T-test and post hoc analysis were used to compare the groups, and the significance criterion adopted was p < 0.05.In group A, which used fixation with three screws, synthesis failure was seen at a mean force of 526 N. In group B, which used two screws, the mean force was 466 N. The results presented a statistically significant difference (p = 0.02).The osteosynthesis of femoral neck fractures in synthetic bone fixated with two screws presented inferior results to fixation with three screws. Level of Evidence III; Case-control study.analisar os resultados dos ensaios biomecânicos da fixação da fratura de colo de fêmur Pauwels tipo II em ossos sintéticos, utilizando dois parafusos paralelos ou três parafusos em formação de triângulo invertido.Foram utilizados 10 ossos sintéticos, de uma marca nacional, divididos em dois grupos. Nos grupos A e B foram realizados, respectivamente, fixação com três e com dois parafusos canulados, após osteotomia perpendicular ao colo femoral no seu terço médio, simulando uma fratura do colo femoral Pauwels tipo II. Analisou-se a resistência destas fixações a uma compressão no eixo da força resultante de compressão do quadril, através de uma prensa hidráulica manual. O teste t e a análise “post hoc” foram utilizadas para comparação dos grupos e o critério de determinação de significância adotado foi p < 0,05.No grupo A, submetido à fixação com três parafusos, observou-se a falha da síntese com uma média de 526 N. Já no grupo B, com dois parafusos, a média foi de 466 N. Os resultados encontrados apresentaram diferença estatisticamente significativa, com p = 0,02.A osteossíntese das fraturas do colo femoral de osso sintético com dois parafusos apresentou resultados inferiores à utilização de três parafusos. Nível de Evidência III; Estudo caso-controle." @default.
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• W3179408802 date "2018-06-01" @default.
• W3179408802 modified "2023-10-14" @default.
• W3179408802 title "BIOMECHANICAL ANALYSIS OF FEMORAL NECK FRACTURE FIXATION IN SYNTHETIC BONE" @default.
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• W3179408802 doi "https://doi.org/10.1590/1413-785220182603182288" @default.
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