The difference between subarachnoid and epidural anesthesia

spinal anaesthesia, short for subarachnoid anaesthesia, refers to the injection of local anesthesia drugs into the subarachnoid space through the lumbar vertebrae to block the nerve roots in this area. Epidural anesthesia, through the special puncture needle into the epidural space and put into the anesthesia tube, through the anesthesia tube is injected into the epidural space, so that the spinal nerve roots produce temporary anesthesia and play a role.