Long-Term Mechanical Reliability of AMS 700CX™/CXM Inflatable Penile Prosthesis

PURPOSE: We determined the long-term mechanical reliability of the AMS 700CX/CXM inflatable penile prosthesis in men with organic erectile dysfunction. MATERIALS AND METHODS: A total of 455 consecutive patients underwent implantation of an AMS 700CX/CXM inflatable penile prosthesis between April 1986 and July 2004. Using telephone interviews and mailed questionnaires we obtained followup on 380 of 455 patients (83%). Data were obtained with regard to 2 end points, including overall failure and mechanical failure caused by any malfunctioning component. RESULTS: Followup was 0.49 to 231 months (median 91.5). Ten-year Kaplan-Meier estimates of overall and mechanical survival were 74.9% (95% CI 69.2 to 81.1) and 81.3% (95% CI 75.7 to 87.3), respectively. CONCLUSIONS: To our knowledge this is the longest followup of any inflatable penile prosthesis showing overall and mechanical survival by Kaplan-Meier estimates.