Resumo: Dois modelos que simulavam fraturas do tipo C e B da classificação proposta pelo Grupo AO-ASIF (Arbeistsgemeinschaft fiir Osteosyntheseftagen - Association for the study of internal fixation) foram submetidos a ensaios de compressão excêntrica,
respeitando os eixos de carga do remur. No primeiro, foram testadas, comparativamente, placas retas e em onda de 14, 16 e 18 furos, que fixavam uma falha de 5Omm. No segundo modelo testaram-se, comparativamente, placas retas e em onda de 14 furos, que fixavam
uma falha de 2mm, com ausência da parede medial (oposta à placa). Concluiu-se, no Modelo Experimental I, que os corpos de prova fixados com placas retas apresentaram coeficiente de rigidez sig da distância entre os pontos de fixação das placas aos bastões. No Modelo Experimental II, concluiu-se que os corpos de prova fixados com placas em onda apresentaram coeficiente de rigidez final significativamente maior que os fixadoscom placas retas Ver menos

Abstract: Two models simulating fractures type C and B of the classification proposed by AO-ASIF Group (Arbeistsgemeinschaft fiir Osteosyntheseftagen - Association for the study of intemal fixation) were submited to eccentric compression taking in to account the
femoralload axes. In the first experimental model (fracture type C) straight and wave plates with 14, 16 and 18 holes, fixing a 5Onm gap were tested comparatively. In the second experimental model (fracture type B), straight and wave plates with 14 holes, fixing a 2mm,
with a deffect on the medial wall (opposed to the plate), were tested comparatively. Experimental Model I showed that bodies fixed with straight plates presented rigidity coeflicients significantly larger than the ones fixed with wave plates, and that there was reduction of the rigidity coeflicients in function of the increase of the distance between the fixation points of the plates to the sticks. Experimental Model II showed that the bodies fixed with wave plates presented coeflicients of rigidity significantly larger than the ones fixed with straight plates Ver menos