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

F Montorsi1, P Rigatti, G Carmignani

  • 1Divisione di Urologia, Ospedale San Raffaele, Milano, Italia. montorsi.francesco@hsr.it

European Urology
|February 15, 2000
PubMed
Summary

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American Medical Systems (AMS) three-piece inflatable implants show high patient and partner satisfaction for erectile dysfunction treatment. Mechanical reliability favors CX cylinders over Ultrex, with common issues including penile shortening and unnatural erection sensation.

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.

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  • 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.