Seeing as how it’s encased in bone and all. I was just looking at old x-rays from when I had stress fractures in my tibias and had that “hey, wait a minute” feeling. Please help!
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super simplified [diagram from google images](https://upload.wikimedia.org/wikipedia/commons/6/6f/609_Body_Supply_to_the_Bone.jpg).
It isn’t encased completely.
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