Intraosseous vascular access refers to placement of of needle into the bone to access medullary space for infusion. The indications of intraosseous access are: - burns - hypovolemic shock - obesity - edema - seizures - local anesthesia - cardiopulmonary arrest - medication infusion Reference: https://reference.medscape.com/article/80431-overview#a2 Image via: https://www.sciencedirect.com/science/article/abs/pii/S0736467909003217