Long-term experience with controlled expansion cylinders in the AMS 700CX inflatable penile prosthesis and comparison with earlier versions of the scott inflatable penile prosthesis

To determine complication and survival rates of the AMS700CX penile prosthesis and to compare its reliability with earlier versions of the Scott inflatable penile prosthesis. Retrospective chart review and telephone interviews were used. Actual 4-year survival of the AMS 7000X device was 85%, whereas earlier versions of the device had actual 4-year survival of 46% (p < 0.0001). The observed difference in prosthesis reliability could not be accounted for by differences in patient population, surgical technique, or incidence of infections. The most significant factor that contributed to improved prosthesis survival was the lack of cylinder complications (leaks and aneurysms). The controlled expansion cylinders of the AMS 7000X penile prosthesis are a significant advance in reliable, low-morbidity surgical therapy for impotence.