Survivors of Symphysiotomy have voted overwhelmingly to reject the Government's €34 million redress scheme.
83% of SOS members who attended meetings in Cork and Dublin this weekend have said "no" to the proposals.
They have described the scheme as unfair, restrictive, and say it is based around "unrealistic time limits".
Symphysiotomy involved cutting through the women's pelvis during childbirth - often without the patient's consent.
SOS represents 400 women. Chairperson Marie O'Connor is now calling on the Government to "go back to the drawing board":
Marie O'Connor says the members "rejected the ex gratia nature of a scheme that says the government is not to blame, the State did no wrong, these operations were acceptable, because such a scheme offers no accountability, no truth and no justice.
"They rejected the grossly discriminatory and utterly unjust aspects of the scheme that exclude women with dementia and, logistically, those living abroad; that penalise less well off women, those without records, those with knowledge and/or psychological issues," she added.