Özet:

Background: Spinal and epidural blocks are accepted techniques for regional anaesthesia, and lumbarpuncture is the way of application anaesthesia. Lumbar puncture is a procedure associated with minimalrisk. Slight contact of the needle tip to the dura mater can cause perforation. Serious complications arerelatively rare. Case Report: We report a rare case of an arachnoid herniation, occurred after regionalanaesthesia. Arachnoid herniation was seen incidentaly during the third operation for lumbar back and legpain. Dural defect is primarily repaired additional to the decompression and posterior stabilization.Conclusion: Although spinal and epidural procedure is widely used for anaesthesia, it may rarely causecomplications. Arachnoid herniations can be seen with the minor dural trauma from inserting the epiduraltube or spinal puncture. Needle gauche is important during regional anaesthesia not to cause complications

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