An intraosseous access system can include a needle that defines a lumen and a longitudinal axis about which the needle can be rotated during an insertion event. The needle can include a proximal end that remains at an exterior of a patient during use, a distal end that can be inserted through the skin of the patient into contact with a bone of the patient, and a distal tip at a distalmost point of the distal end of the needle that is positioned at the longitudinal axis of the needle. The system can further include an obturator sized to be received within the lumen of the needle that can inhibit material from entering the needle as the system is inserted into the bone.