When giving an epidural or a subarachnoid puncture, the above described anatomy results in their being an increased risk of haemorrhage. The risk of haemorrhage is greatest at the atlanto-occipital space where there are particularly large tributaries. | When giving an epidural or a subarachnoid puncture, the above described anatomy results in their being an increased risk of haemorrhage. The risk of haemorrhage is greatest at the atlanto-occipital space where there are particularly large tributaries. |