The effect of lower Valsalva leak point pressure (VLPP) and previous pelvic surgery on outcomes following sling surgery is controversial. We assessed outcomes following bone-anchored sling (BAS) placement in patients with intrinsic sphincteric deficiency (ISD) and previous pelvic surgery. A retrospective review of 149 patients undergoing BAS placement was performed. Patients were stratified by VLPP (> or =60, <60, and <30) and by history of previous anti-incontinence/pelvic floor surgery. Outcomes were assessed using a questionnaire comprising validated urogenital distress inventory (UDI)-6, incontinence impact questionnaire (IIQ)-7 questionnaires and additional items addressing satisfaction. In comparing the three VLPP cohorts, the percentage of patients reporting incontinence episodes of <1/week (64%, 68%, and 63%, respectively) and postoperative UDI/IIQ questionnaire scores were similar (p > 0.2, all comparisons). Lower rates of patients achieving <1 episode of incontinence per week (50%; p = 0.07) and worse UDI/IIQ scores (p = 0.02) were associated with patients with > or =2 prior surgeries. Whereas results are similar following BAS in patients with or without varying degrees of ISD, worse outcomes are associated with prior surgery.