Redlich-Obersteiner's Zone

The Redlich-Obersteiner's zone is a boundary between the central nervous system (CNS), the peripheral nervous system (PNS). The Redlich-Obersteiner's zone is located at the point of entry of either between cranial nerves and the brain or spinal nerves and the spinal cord. This narrow zone identified visually where there is a transition regarding myelin production.

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As stated above, the Redlich-Obersteiner's zone separates the CNS and PNS. This means that at this point, you transition from Schwann cell myelin meet to oligodendrocytemyelin. Of note, in cranial nerves this is often the place of neuro-vascular compression syndromes like trigemial neuralgia.