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Table 7: Intradiscal lidocaine response—40 concordant and nonconcordant severely painful discs where anesthetic was injected
Disc State Intradiscal Lidocaine-Provoked Pain Response Total (n = 40)
Total Improvement (n = 17) Partial Improvement (n = 7) No Improvement (n = 16)
Leaking 14 (82%) 2 (29%) 5 (31%) 21 (53%)
Contained 3 (18%) 5 (71%) 11 (69%) 19 (48%)
Total 17 (100%) 7 (100%) 16 (100%) 40 (100%)

Disc State	Intradiscal Lidocaine-Provoked Pain Response			Total (n = 40)
Disc State	Total Improvement (n = 17)	Partial Improvement (n = 7)	No Improvement (n = 16)	Total (n = 40)
Leaking	14 (82%)	2 (29%)	5 (31%)	21 (53%)
Contained	3 (18%)	5 (71%)	11 (69%)	19 (48%)
Total	17 (100%)	7 (100%)	16 (100%)	40 (100%)