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- W2505256476 abstract "espanolSe compara la capacidad regenerativa del aloinjerto de matriz osea descalcificada con el tradicional injerto oseo autologo en el tratamiento de defectos osteoperiosticos de 4-5 cm, de longitud provocados experimentalment e a nivel diafisario en femur ovino. Para este experimento, se emplearon 18 corderos de raza churra esquele- ticament e maduros. En 8 animales, la reconstruccion del defecto diafisario se intento mediant e el aport e aloinjerto fragmentado de matriz ose a descalcificada. En otros 6 animales, el defecto se relleno con injerto corticoesponjoso autologo, tambien fragmentado. La estabilizacion osea se realizo por medio de un fijador externo. Tras efectuar estudio s radiologicos e histologicos, los resultados fueron comparado s con un grupo control de 4 animales con el mismo defecto oseo femoral, en los que no se efectuo ningun tipo de reconstruccion osea. El injerto autologo se mostro mas eficaz que el aloinjerto de matriz osea descalcificada para la reparacion de defectos oseos segmentarios masivos. Solo en 1 de los animale s tratados con aloinjertos de matriz osea se observo una actividad osteogenica que condujo a la reparacion y consolidacion del defecto. Por el contrario, no se observo ningun fracaso en la incorporacion y consolidacion de los injertos autologos en los animales que completaron los 4 mese s de estudio. EnglishThe regenerative capacity of decalcified allogenic matrix was compared with that of autologous bone graft for treatment of osteoperiosteal defects, 4-5 cm in length, experimentally induced in the sheep femoral diaphysis. Eighteen skeletally matur e shee p wer e use d in this investigation. In 8 animals, the reconstructio n of the diaphyseal defect wa s performed using small fragments of decalcified allogeni c bone matrix. In othe r 6 animals, the defect wa s refilled with corticoespongious autologous bone graft in chips. Bone stabilization was achieved by means of an external fixator. After radiologic and histologic assessments, the results wer e compared with a control group including 4 animals with the same diaphyseal defect but without any attempt of reconstruction. Autologous bone graft was found to be more efficient than decalcified allogenic bone matrix for treatment of large segmental bone defects. An osteogeni c activity leading to the complete repair and consolidation of the defect wa s only detected in 1 of the animals treated with allogenic bone matrix. On the contrary, no failures in the incorporation and consolidation of grafts wer e observed in thos e animals treated with autologous bone chips." @default.
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- W2505256476 date "1992-01-01" @default.
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- W2505256476 title "Aloinjerto de matriz ósea descalcificada versus injerto autólogo en la reparación de defectos óseos segmentarios masivos. : Estudio experimental" @default.
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