What is a bone marrow aspirate?

Bone marrow aspiration is a method to extract a small amount of bone marrow fluid to check the hematopoietic system, and it is one of the most important measures to check blood diseases.

We know that red bone marrow is retained in the spinal canal, sternum, ribs, clavicle, scapula, ilium, skull, and the cancellous bone at the upper end of the femur and humerus for life. It is the main hematopoietic organ of the human body. The most common puncture site is the posterior superior iliac spine or the anterior superior iliac spine of the pelvis, and the tibia in children. Because these parts will not hurt the internal organs and are easy to operate, they are very safe. During the specific operation, after local anesthesia is applied to the periosteum, a bone marrow puncture needle is used to puncture the bone marrow cavity, and a small amount of bone marrow fluid (about 0.2 to 0.3 mL) is drawn for examination. The puncture point can heal within 1 to 2 days. In some special cases, it is necessary to extract the spinal fluid of the patient's sternum or vertebrae for testing.

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