Table 1. Clinical 0 to 5 grading scale for thoracolumbar spinal cord lesions [14] and incidence in the two groups.

Grade	Clinical signs	Group1	Group2
0	Normal		16/16 (100%)
1	Spinal pain	0/12 (0%)
2	Ambulatory paraparesis	9/12 (75%)
3	Non-ambulatory paraparesis	2/12 (17%)
4	Paraplegia with intact deep pain perception	1/12 (8%)
5	Paraplegia with absent deep pain perception	0/12 (0%)