Logan Class of December 2011 - Home

Vacuum phenomenon=tearing of annular fibers leading to opening of space and pulling of gas out of solution after the NP dissolves. Vacuum cleft=marginal disruption of outer annular fibers (may be trauma related or related to degenerative changes) Hahn's fissure=midline artery supply and vein drain for vertebral body (shows up on MR) ................
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