Association of Atlanto-Occipital Dislocation, Retroclival Hematoma, and Hydrocephalus: Management and Survival in a Pediatric Patient.

Atlanto-occipital dislocation (AOD) is an injury with high morbidity and mortality. We present a case of survival of a pediatric patient with the diagnoses of AOD, retroclival hematoma, and resulting hydrocephalus. The patient's cervical spine was stabilized until occipital-cervical fusion provided definitive treatment, and the hydrocephalus was treated with a ventriculostomy. The patient survived with no neurological deficits. A better understanding and awareness of the radiologic criteria of AOD will lead to earlier recognition of AOD and improved outcomes, even in the presence of complications from AOD. Surgical fixation should be used for definitive treatment of injuries with AOD.

Elemento finito isoparametrico de viga de eje curvo

El trabajo plantea como alternativa de solucion de las mismas, el metodo de los elementos finitos basado en el calculo de los desplazamientos, perfectamente aplicable en nuestro medio y en que las matrices de rigidez de estos elementos, pueden ser evaluadas aplicando los principios del trabajo virtual y de la energia estacionaria. Tambien se incluyen conceptos basicos para la aplicacion del metodo, la formulacion del elemento finito isoparametrico de viga de eje curvo con dos, tres y cuatro nudos.