['We measured levator ani neuromuscular function before and after first delivery to identify the location, timing, and mechanism of injury.', "Fifty-eight primiparous women underwent electromyographic examination of the levator ani antepartum at 6 weeks and 6 months after the delivery. Antepartum turns/amplitude data were pooled to create a normal range. We calculated each woman's percentage of outliers from this range and assessed relationships between delivery and extent of injury.", 'At 6 weeks, 14 of 58 women (24.1%) had neuropathy, with 9 of those 14 women recovering by 6 months. At 6 months, 17 of 58 women (29.3%) were neuropathic, which included 12 new injuries. Women who had elective cesarean delivery had virtually no injury, but all other modes of delivery had similar injury rates.'] Does neuropathic injury to the levator ani occur in 1 in 4 primiparous women?