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.