Study of Nerve Reconstruction Using AVANCE in Subjects Who Undergo Robotic Assisted Prostatectomy for Treatment of Prostate Cancer

Inclusion Criteria: * ≥ 18 years of age, but ≤70 years of age; * IIEF EF Domain\*1 score ≥ 22; * be able to effectively communicate with study personnel; * be considered by the physician to be available for subsequent visits; * be willing to comply with all aspects of the treatment and evaluation schedule over a 24 month duration; * sign and date an IRB-approved written informed consent prior to initiation of any study procedures, including screening procedures; and * require radical prostatectomy. Exclusion Criteria: * prior surgery in the last 6 months which could affect sexual function; * history of Peyronie's disease; * significant neurological disorder (i.e. multiple sclerosis, peripheral neuropathy); * treatment for major psychiatric disorders; * history of penile implant or prosthesis; * history of diabetic neuropathy; * life expectancy of less than two years; * concurrently involved in another investigational study; * uncontrolled hypertension with systolic BP \>200mmHg or diastolic BP \>115mmHg is present at screening; * currently receiving or planned treatment with chemotherapy or radiation therapy; * diagnosis of bony metastasis; * known allergy or severe intolerance to PDE-5 inhibitors; or * cardiac pacing equipment or other electro-mechanical devices which preclude the use of CaverMap™ neurostimulator.