Table 2.

Number distribution of the punctures of Gertzbein and Robbins classification scores for CAP and VETERAN groups

Vertebral Level	Gertzbein and Robbins classification score
	CAP group							VETERAN group
	Grade A	Grade B in medial breach	Grade C in medial breach	Grade D in medial breach	Grade B in lateral breach	Grade C in lateral breach	TCT	Grade A	Grade B in medial breach	Grade B in lateral breach	TCT
T5								1
T6	2
T7	5						1	1
T8	8
T9	9						1				1
T10	14	4					4	2
T11	39						7	9			1
T12	54	3	1				7	17	1		2
L1	93	2	2		4	1		34		1
L2	71	1	1		1	3		28		1
L3	63			1	2			21
L4	27	1				1		4
L5	15	1						1
Total (%)	89.1%	2.7%	0.9%	0.2%	1.6%	1.1%	4.5%	94.4%	0.8%	1.6%	3.2%

T thoracic vertebra, L lumbar vertebra, TCT transcostovertebral approach