AMS three-piece inflatable implants for erectile dysfunction: a long-term multi-institutional study in 200...

Area of Science:

• Urology
• Medical Device Engineering
• Sexual Medicine

Background:

• Erectile dysfunction (ED) significantly impacts quality of life.
• Three-piece inflatable penile prostheses are a common surgical solution for ED.
• Long-term mechanical reliability and patient-partner satisfaction are crucial outcome measures.

Purpose of the Study:

• To evaluate the long-term mechanical reliability of AMS three-piece inflatable implants.
• To assess patient and partner satisfaction following implantation.
• To identify factors influencing satisfaction and device performance.

Main Methods:

• Retrospective chart review of 200 ED patients undergoing AMS implant surgery.
• Prospective assessment of device function and sexual life impact via patient and partner interviews.
• Mean follow-up of 59 months (range 6-130 months).
• Kaplan-Meier analysis for mechanical survival rates.

Main Results:

• High patient (92.5%) and partner satisfaction rates reported.
• Mechanical complications occurred in 4% of patients; infection in 6%.
• Common patient complaints: penile shortening (30%) and poor glandular engorgement (20%).
• Partners reported unnatural erection sensation (25%) as a primary concern.
• CX cylinders demonstrated significantly better mechanical survival than Ultrex cylinders.

Conclusions:

• AMS three-piece inflatable implants offer high long-term patient (92%) and partner (96%) satisfaction.
• Addressing penile shortening, glandular engorgement, and erection naturalness can improve outcomes.
• CX cylinders are mechanically superior to Ultrex cylinders for long-term use.