Which bones are often selected for bone marrow aspiration

The posterior superior iliac spine or anterior superior iliac spine of the pelvis is usually selected for bone marrow puncture. This part has clear bony signs and no surrounding large blood vessels and nerve trunk, so it is safe. If the materials for multiple puncture are not satisfactory, sternal puncture can be selected in a few cases. As long as the oblique needle is carried out (the needle is inserted into the sternum at 30° ~ 45°) without penetrating the sternum, it is also safer. Before puncture, local anesthesia should be carried out at the puncture point, and anesthetics should be applied from the skin and subcutaneous to the periosteum on the bone surface, so the puncture will not bring pain to the patient. Skilled operators usually do this in 10 minutes or more, so there is no need to worry. The puncture site should not be cleaned (including bathing) for 2 to 3 days after applying sterile dressing locally to avoid local infection.