Penile prosthesis

Penile prosthesis surgery involves the implantation of an erectile device within the penis and is the most effective treatment for erectile dysfunction because it allows the man to have an (artificial) erection anytime he wants and as long as he wants to keep the erect penis up. There are two main types of penile prostheses, the Semi-Rigid implant or the Inflatable penile implant.

 

Semi-Rigid implants involve placing a semi-rigid rod into the penis. After having this operation you will have a semi-permanent erection, although this will not be as firm as your previous erections, it is adequately suitable for sexual intercourse. It is also flexible enough to be pulled down and tucked away when you are clothed, thereby avoiding any unwanted attention or embarrassment.

 

Inflatable implants can be a 2-piece or 3-piece models. The 3-piece inflatable penile prosthesis closely simulates a natural penile erection and most men prefer this device. Iinvolves the insertion of two cylinders into the penis and a reservoir of 60-100mls of saline deep behind the pubic bone. A pump and valve are inserted into the scrotum allowing the saline to be pumped into the penis, thus producing an erection. When an erection is no longer needed the valve can be released allowing the saline to drain back into the reservoir and the penis to become flaccid (soft).

Penile prosthesis implant has been around since early 1970s and there has been considerable advances in both surgical technique and device technologies. It is safe, effective and durable, and is associated with excellent patient and partner satisfaction. There is no doubt that penile prosthesis implant offers the man a guaranteed erect penis anytime and for as long as he wants his erect penis for sexual activity.

What preparation is required?

Since penile prosthesis implant is performed under general anaesthesia, you should have nothing to eat or drink for 6 hours prior to treatment. Regular medications can be taken with a sip of water with the exception of blood thinning agents (eg. warfarin, aspirin, clopidogrel) or non-steroidal anti-inflammatories which need to be stopped for 7-10 days. A mid stream urine (MSU) test is required to ensure the urine is sterile before treatment is undertaken.

What do I need to bring to surgery?

  • All related available imaging such as KUB (kidneys, ureter, and bladder) x-ray, CT scan abdomen, or kidney ultrasound
  • Your usual medications

What happens in the operating room?

You will meet your anaesthetist prior to surgery who will take a thorough medical history. Your procedure will be performed under general anaesthesia with anti-microbial cover. The genital area will be shaved and a 10-minute povidine surgical scrub will be performed to minimise microbial skin colonisation.

What are the risks?

Since penile prosthesis implant involves the insertion of a foreign device, strict microbial prophylaxis and surgical techniques are paramount. When performed by an expert surgeon, penile prosthesis implant is a safe procedure. Specific complications involve:

  • Pain usually around the inguinal region
  • Bruising or hematoma of scrotum
  • Dysuria from urinary catheterisation
  • Skin irritation or mild infection
  • Potential serious complications include:
  • Prosthesis infection is the most dreaded complication and usually involves explantation of the penile prosthesis
  • Prosthesis malfunction- commonly due to wear and tear of device
  • Injury to the urethra or bladder during prosthesis implant

What to expect afterwards?

You are usually required to stay overnight to receive intravenous antibiotic for 24 hours postoperatively. Your urinary catheter and surgical dressing will be removed the next morning after your surgery. When you are comfortable and passing urine satisfactory, you will be discharged with 14 days of oral quinolones antibiotics. At home you should rest and avoid strenuous physical exertion for 4-6 weeks. During this time, your penile prosthesis remains deflated and any sexual activity is discouraged.

Follow-up

You will be contacted or have an appointment the following week in order to check on your progress. The recycling of the penile prosthesis occurs at your second follow up with Dr Chung at 4 weeks postoperatively. During that visit, you should take simple oral analgesia prior to the appointment as you might experience local pain when the penile prosthesis is activated for the first time. Dr Chung will provide you with instruction on penile prosthesis rehabiltation to maximise your prosthesis clinical outcome.