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Doctors are trained to perform lumbar punctures on adult. Their lumbar spine, which is where the needle is inserted, is naturally in a different position due to the height of an adult. Since children are smaller, and have a shorter spine, their lumbar spine is in a different position. It's not that much more difficult to do it on a child, the doctor just has to break from his natural thought process and locate the lumbar spine in a different position.

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14y ago

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