An anatomical study of lumbar epidural catheterization

BMC Anesthesiology

Table 1 Distribution of membrane vertebral ligament and the incidence of abnormal catheterization (%)

Vertebral Segment	Occurrence rate of dorsal meningovertebral ligaments	Incidence of catheter exit through the foramen	Incidence of catheter curled into a circle	Venous plexus puncture rate
L1	22 %(11)	0	0	0
L1-L2	32 %(16)	0	0	0
L2	40 %(20)	0	0	0
L2-L3	38 %(19)	2 %(1)	2 %(1)	2 %(1)
L3	34 %(17)	0	0	4 %(2)
L3-L4	44 %(22)	2 %(1)	4 %(2)	4 %(2)
L4	46 %(23)	0	0	0
L4-5	62 %(31)	0	0	0
L5	30 %(15)	0	0	0
L5-S1	98 %(49)	0	0	0

ISSN: 1471-2253