Where is the puncture point of the posterior superior iliac spine for bone marrow puncture, how far is it from the center, and is it on the same plane as the anterior superior iliac spine?

The specific parts of the bone piercing are as follows: ① Anterior superior iliac spine: The puncture point is usually taken at 1 to 2 cm behind and above the anterior superior iliac spine, where the bone surface is flat, easy to fix, and easy to operate; Spines: located on both sides of the sacral vertebrae, the bony prominence above the buttocks; ③ manubrium: this place is rich in bone marrow, when the puncture at the above part fails, the manubrium can be punctured, but the bone here is thin, and there is an atrium behind it and large blood vessels, to prevent the danger of penetration, it is less used; ④ Spinous process of lumbar spine: located at the protrusion of the spinous process of lumbar spine, it is rarely used.

Also, the anterior and posterior iliac spines are not in the same plane, and the front end of the iliac crest is the anterior superior iliac spine.

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