Prevention of avascular necrosis in displaced talar neck fractures by hyperbaric oxygenation therapy: a dual case report.

Talar neck fractures are a rare injury that account for less then 2% of all foot fractures. Displaced fractures are associated with an exceedingly high rate of avascular necrosis (AVN). The incidence of AVN following Hawkins Type 3 fractures of the talar neck may approach 100%, particularly if diagnosis and reduction are delayed. Severe cases may present as pain and disability of the ankle and the subtalar joints due to a talar dome collapse, resulting in degenerative changes that usually require hind foot arthrodesis. We present two cases of traumatic displaced talar neck fractures which were treated surgically more than 2 weeks following injury due to a delay in diagnosis. Both patients underwent hyperbaric oxygen therapy (HBOT) after the operation and neither resulted in AVN of the talus in a three-year follow-up. We suggest that this favorable result may be due to the beneficial effects of HBOT.

Developing Research Partnerships to Bring Change : Experiences from REACH Trust Malawi

Drawing on the experiences of REACH Trust; this paper highlights practical lessons of using research processes and outcomes to promote equity in health policy and practice. The REACH Trust is first introduced. Case studies are then used to highlight how REACH Trust has worked in a participatory manner with key stakeholders at community; national and international levels. In addition to participatory working there are a number of cross-cutting themes that facilitate the uptake of research findings which is discussed in turn: (1) multi-disciplinary and multi-method approaches (2) advocating research findings at strategic forums; and (3) the use of strategic frames. In the conclusion it is argued that research has a critical role to play in responding to the urgent need for the Malawian health sector to develop and act on evidence-based practice in a more gender equitable and pro-poor manner

The yellow fever 17D vaccine virus: molecular basis of viral attennuation and it use as an expression vector

The yellow fever (YF) virus is the prototype flavivirus. The use of molecular techniques has unraveled the basic mechanisms of viral genome structure and expression. Recent trends in flavivirus research include the use of infectious clone technology with which it is possible to recover virus from cloned cDNA. Using this technique, mutations can be introduced at any point of the viral genome and their resulting effect on virus phenotype can be assessed. This approach has opened new possibilities to study several biological viral features with special emphasis on the issue of virulence/attenuation of the YF virus. The feasibility of using YF virus 17D vaccine strain, for which infectious cDNA is available, as a vector for the expression of heterologous antigens is reviewed.