In this Mayo Clinic Males's Wellness Minute, Mayo Clinic urologist Tobias S. Köhler, M.D., goes over pre-operative prep work for males going through penile implant surgery. Penile implants are devices placed inside the penis to permit guys with erectile dysfunction (ED) to get an erection. Penile implants are normally recommended after various other treatments for ED stop working. To find out more regarding men's health care at Mayo Clinic, see