What does "Transpedicular" mean?

Question

I have to write an essay about vertebroplasty, and I've been reading the books and they talk about "transpedicular" and "extrapedicular" approaches for putting the needle in. Can anyone please explain what this means, and what the different is between the two....

Thanks.

Answer 1

Transpedicular approach = needle that injects the cement enters the vertebral body by way of the pedicle (small portion of the vertebra that essentially connects the body to the posterior laminae) first.

Extrapedicular approach = needle goes directly into the vertebral body. This is considered more dangerous because it increases the chance of cement leakage and is usually reserved for cases in which the pedicles are diseased, e.g. tumor

Answer 2

Transpedicular Approach

Answer 3

Transpedicular

Answer 4

transpedicular: A surgical approach carried out through and inside the pedicle of a thoracic vertebra to reach a thoracic disc without requiring retraction of the spinal cord.

extrapedicular would be outside the spine such as a halo or other external structure. Check out the link below it has pictures.

Answer 5

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Answer 6

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RE:
What does "Transpedicular" mean?
I have to write an essay about vertebroplasty, and I've been reading the books and they talk about "transpedicular" and "extrapedicular" approaches for putting the needle in. Can anyone please explain what this means, and what the different is between the two....

Thanks.