Methods. An aneroid manometer attached to a needle during lumbar puncture for spinal anesthesia was used to record the pressure in the epidural space, and an attempt was made to define the moment the needle contacted and indented the dura mater.
Results. By measuring the distance the needle travelled after contact with the dura and before its actual perforation, it was determined that the dura mater indents 2-6 mm.
Conclusion. The finding indicated that the dura mater is relatively resistant to puncture.
- dura mater
- measurement techniques
Statistics from Altmetric.com
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.
The authors acknowledge Carlos Pereira Parsloe for his discussions and suggestions and Heloisa Attuy/Cecilia Fanucchi for preparation of the manuscript.