Prostate cancer is the most common cancer other than skin cancer in North American men and it is the second leading cause of cancer deaths in men. Although surgical removal of the prostate gland can cure cancer that has not spread into the body, this surgery puts patients at risk for erectile dysfunction, an inability to obtain a satisfactory penile erection. Using a specialized approach to prostate removal surgery that avoids damaging nerves can reduce the likelihood of erectile dysfunction after prostatectomy; however, this specialized surgery does not prevent all cases of postprostatectomy erectile dysfunction.