** Intraosseous (IO) access was initially thought to be less applicable in patients older than 6 years, now there is growing suppo for consideration of IO techniques in patients of any age as rapid and equally effective alternatives to intravenous (IV) peripheral lines. Intraosseous infusion (IO) is the process of injecting directly into the marrow of a bone to provide a non-collapsible entry point into the systemic venous system.This technique is used in emergency situations to provide fluids and medication when intravenous access is not available or not feasible. A comparison of intravenous (IV), intramuscular (IM), and intraosseous (IO) routes of administration concluded that the intraosseous route is demonstrably superior to intramuscularand comparable to intravenous administration (in delivering paediatric anaesthetic drugs).Due to the rapid advance and adoption of superior intraosseous access technology, IO access has now become the preferred method of establishing vascular access for patients in whom traditional access is difficult or impossible.