Where is the puncture point of the posterior superior iliac spine of the bone marrow puncture needle? How far is it from the center, and is it in the same plane as the anterior superior iliac spine?

The specific parts of the bone puncture are as follows: ①The anterior superior iliac spine: 1~2cm above the posterior anterior superior iliac spine is often used as the puncture point, where the bone surface is relatively flat, easy to fix, convenient and safe to operate; ②Posterior superior iliac spine Spines: located on both sides of the sacral vertebrae and above the buttocks with bony protrusions; ③Sternal stem: This is where the bone marrow content is rich. When the puncture of the above parts fails, sternal stem puncture can be used, but the bone here is thinner and there is an atrium behind And large blood vessels, to prevent the danger of penetration, seldom used; ④Lumbar spinous process: located at the protrusion of the lumbar spinous process, rarely used.

Also, the anterior iliac and posterior iliac are not in the same plane, and the front end of the iliac crest is the anterior superior iliac spine. Its clinical significance: it is a sign to determine the McLaren point.

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