Return of Continence Following Robot-Assisted Radical Prostatectomy With or Without a Urethrovesical Sling

Inclusion Criteria: * Patients must have organ confined prostate cancer. * Patients must have PSA\< 15. * Patients must have clinical stage prostate cancer \< cT3. * Patients must be scheduled for robot assisted transperitoneal laparoscopic radical prostatectomy. * Patients must be able to provide written informed consent and HIPAA authorization for release of personal health information. * Patients must be at least 18 years of age. Exclusion Criteria: * Patients must not have previously undergone transurethral resection, laser therapy, microwave therapy, radiofrequency ablation, or other surgery of the prostate. * Patients must not have previously undergone incision of urethral stricture or incision of bladder neck contracture. * Patients must not have previously been diagnosed with urethral stricture, bladder neck contracture or urinary incontinence. * Patients must not have previously been diagnosed with atonic bladder or neurogenic bladder. * Patients must not have significant pre-operative voiding symptoms as defined by an American Urologic Association symptom score of greater than 19. * Patients must not have a prior history of radiation to the pelvis. * Patients must not have persistent bacteriuria that cannot be cleared, as demonstrated by a negative urinalysis or urine culture, within 1 month of surgery. * Patients must not have allergies to pig tissue or pig products or have religious or cultural objection to the use of pig tissue.