The Experts below are selected from a list of 9171 Experts worldwide ranked by ideXlab platform
Craig B Birgfeld - One of the best experts on this subject based on the ideXlab platform.
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zygomaticomaxillary complex fractures and their association with Naso orbito ethmoid fractures a 5 year review
Plastic and Reconstructive Surgery, 2012Co-Authors: Edward P Buchanan, Richard A Hopper, Daniel W Suver, Austin G Hayes, Joseph S Gruss, Craig B BirgfeldAbstract:Background:Zygomaticomaxillary complex fractures associated with ipsilateral Naso-orbito-ethmoidal fractures are more complex injuries than isolated zygomaticomaxillary complex fractures. This injury pattern can have significant long-term morbidity if not recognized and treated appropriately during
Cilia L Fuentes - One of the best experts on this subject based on the ideXlab platform.
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potencial alelopatico de brassica campestris subsp rapa y lolium temulentum sobre tres especies de malezas de la sabana de bogota
Agronomía Colombiana, 2005Co-Authors: Carolina Zamorano, Cilia L FuentesAbstract:Se realizaron bioensayos con el objeto de evaluar el potencial alelopatico de los extractos de hojas y residuos de nabo silvestre ( Brassica campestris subsp. rapa [L.] Hook. f.) y raigras ( Lolium temulentum L.) sobre tres especies de malezas de la Sabana de Bogota: cenizo ( Chenopodium petiolare Kunth), malva blanca ( Fuertesimalva limensis [L.] Fryxell) y bledo ( Amaranthus hybridu s L.). Los bioensayos en el laboratorio se desarrollaron con la tecnica de plantulas en solucion nutritiva, bajo un diseno completamente al azar con tres repeticiones y tres replicas en el tiempo, y en invernadero, donde se uso mezcla de arena y turba (3:2) como sustrato y semillas pregerminadas. Los resultados obtenidos en laboratorio mostraron diferencias en los sintomas observados entre las diferentes especies, mientras que la variable peso fresco fue la que mejor describio el efecto de las concentracion para los extractos de nabo, con una concentracion que reduce la variable de respuesta en 50% (DC50) de 5,53 g · L-1 para bledo, 2,58 g · L-1 para cenizo y 7,72 g · L-1 para malva blanca. En el caso de raigras, el peso fresco permitio el ajuste de una curva concentracion-respuesta, con el fin de calcular la DC50. La respuesta entre las especies de malezas fue diferente respecto a la actividad de los extractos y de los residuos vegetales en suelo. En el caso del bledo, no se registraron diferencias entre los residuos en suelo y los extractos de nabo, mientras que con cenizo y malva blanca no hubo emergencia de plantulas bajo la condicion de residuos en suelo de nabo. El peso fresco de plantulas de tomate disminuyo en cerca del 25% al crecer en residuos de nabo (6 o 12 t · ha-1 de materia fresca) y en cerca del 60% bajo residuos de raigras (6 t · ha-1 de materia fresca).
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Potencial alelopático de Brassica campestris subsp. rapa y Lolium temulentum sobre tres especies de malezas de la Sabana de Bogotá
Centro Editorial of Facultad de Ciencias Agrarias Universidad Nacional de Colombia, 2005Co-Authors: Carolina Zamorano, Cilia L FuentesAbstract:Se realizaron bioensayos con el objeto de evaluar el potencial alelopático de los extractos de hojas y residuos de nabo silvestre (Brassica campestris subsp. rapa [L.] Hook. f.) y raigrás (Lolium temulentum L.) sobre tres especies de malezas de la Sabana de Bogotá: cenizo (Chenopodium petiolare Kunth), malva blanca (Fuertesimalva limensis [L.] Fryxell) y bledo (Amaranthus hybridus L.). Los bioensayos en el laboratorio se desarrollaron con la técnica de plántulas en solución nutritiva, bajo un diseño completamente al azar con tres repeticiones y tres réplicas en el tiempo, y en invernadero, donde se usó mezcla de arena y turba (3:2) como sustrato y semillas pregerminadas. Los resultados obtenidos en laboratorio mostraron diferencias en los síntomas observados entre las diferentes especies, mientras que la variable peso fresco fue la que mejor describió el efecto de las concentración para los extractos de nabo, con una concentración que reduce la variable de respuesta en 50% (DC50) de 5,53 g· L-1 para bledo, 2,58 g· L-1 para cenizo y 7,72 g· L-1 para malva blanca. En el caso de raigrás, el peso fresco permitió el ajuste de una curva concentración-respuesta, con el fin de calcular la DC50. La respuesta entre las especies de malezas fue diferente respecto a la actividad de los extractos y de los residuos vegetales en suelo. En el caso del bledo, no se registraron diferencias entre los residuos en suelo y los extractos de nabo, mientras que con cenizo y malva blanca no hubo emergencia de plántulas bajo la condición de residuos en suelo de nabo. El peso fresco de plántulas de tomate disminuyó en cerca del 25% al crecer en residuos de nabo (6 ó 12 t· ha-1 de materia fresca) y en cerca del 60% bajo residuos de raigrás (6 t· ha-1 de materia fresca)
Edward P Buchanan - One of the best experts on this subject based on the ideXlab platform.
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zygomaticomaxillary complex fractures and their association with Naso orbito ethmoid fractures a 5 year review
Plastic and Reconstructive Surgery, 2012Co-Authors: Edward P Buchanan, Richard A Hopper, Daniel W Suver, Austin G Hayes, Joseph S Gruss, Craig B BirgfeldAbstract:Background:Zygomaticomaxillary complex fractures associated with ipsilateral Naso-orbito-ethmoidal fractures are more complex injuries than isolated zygomaticomaxillary complex fractures. This injury pattern can have significant long-term morbidity if not recognized and treated appropriately during
Fred L Hackney - One of the best experts on this subject based on the ideXlab platform.
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aesthetic management of the nasal component of Naso orbital ethmoid fractures
Plastic and Reconstructive Surgery, 2006Co-Authors: Jason K Potter, Arshad R Muzaffar, Edward Ellis, Rod J Rohrich, Fred L HackneyAbstract:Learning Objectives: After studying this article, the participant should be able to: 1. Discuss the critical anatomic structures of the nose that are affected in Naso-orbital ethmoid fractures. 2. Discuss the advantages of early, complete nasal reconstruction of these fractures. 3. Apply a clinical algorithm to such nasal reconstruction. 4. List the techniques used in aesthetic reconstruction of the nose in Naso-orbital ethmoid fractures. Background: Fractures of the Naso-orbital ethmoid complex pose challenging management issues. Although basic treatment principles have been well described, the aesthetic management of the nasal component has not been adequately addressed in the literature. Methods: When secondary nasal deformities occur, they are difficult to correct. Optimal primary correction of the nasal deformity is accomplished using the following four principles: (1) rigid fixation of the nasal pyramid and restoration of nasal height and length; (2) restoration of tip projection; (3) septal reduction/reconstruction; and (4) lateral nasal wall augmentation. Results: Successful management of Naso-orbital ethmoid fractures is a complex and challenging task. Both the bony and soft-tissue components must be addressed and the extent of the injury must be adequately diagnosed to avoid omission of critical steps in the reconstruction. Inadequate treatment of Naso-orbital ethmoid fractures can produce a severe cosmetic deformity that is very difficult to correct secondarily. Conclusion: The authors discuss the nasal component of Naso-orbital ethmoid complex injuries and detail the key principles in their algorithm for aesthetic nasal reconstruction.
Richard J Redett - One of the best experts on this subject based on the ideXlab platform.
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the association of zygomaticomaxillary complex fractures with Naso orbitoethmoid fractures in pediatric populations
Plastic and Reconstructive Surgery, 2021Co-Authors: Pooja Yesantharao, Joseph Lopez, Amy Chang, Jacqueline Hicks, Maria L Reategui, Gianni Thomas, Paul N Manson, Amir H Dorafshar, Richard J RedettAbstract:BACKGROUND Naso-orbitoethmoid fractures associated with ipsilateral zygomaticomaxillary complex fractures are more challenging injuries than zygomaticomaxillary complex fractures alone. However, there is a paucity of information on this complex fracture pattern in the pediatric population. This study investigated the cause, treatment, and outcomes of combined zygomaticomaxillary complex and Naso-orbitoethmoid fractures versus isolated zygomaticomaxillary complex fractures in pediatric patients. METHODS This was a 25-year retrospective cohort study of pediatric patients who presented to a single institution with zygomaticomaxillary complex fractures. Baseline patient demographics and clinical information, and concomitant injuries, treatment/operative management, and postoperative complications/deformities were recorded and compared between patients with combined zygomaticomaxillary complex and Naso-orbitoethmoid fractures and patients with isolated zygomaticomaxillary complex fractures. RESULTS Forty-nine patients were identified to have had zygomaticomaxillary complex fractures in the authors' 25-year study period, of whom 46 had adequate clinical documentation and follow-up. Seventeen patients had combined zygomaticomaxillary complex-Naso-orbitoethmoid fractures, of whom six had panfacial fractures. Both patient groups (zygomaticomaxillary complex only and combined zygomaticomaxillary complex-Naso-orbitoethmoid fractures) were similar in terms of demographics. However, a significantly greater proportion of combined fracture patients experienced postoperative complications compared to isolated zygomaticomaxillary complex fracture patients, even after excluding those with panfacial fractures (87.5 percent versus 35.3 percent; p < 0.001). Enophthalmos (37.5 percent) and midface growth restriction (37.5 percent) were the two most common complications/deformities in all combined fracture patients. CONCLUSIONS High-impact trauma can lead to zygomaticomaxillary complex fractures with associated Naso-orbitoethmoid fractures in children. This injury pattern was found to cause significantly greater postoperative morbidity than isolated zygomaticomaxillary complex fractures alone. Thus, pediatric patients presenting with this complex facial fracture pattern should be closely monitored. CLINICAL QUESTION/LEVEL OF EVIDENCE Risk, II.
