title: 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.
abstract: OBJECTIVEs. To determine complication and survival rates of the AMS 700CX penile prosthesis and to compare its reliability with earlier versions of the Scott inflatable penile prosthesis.
  
  
  METHODS
  Retrospective chart review and telephone interviews were used.
  
  
  RESULTS
  Actual 4-year survival of the AMS 700CX 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).
  
  
  CONCLUSIONS
  The controlled expansion cylinders of the AMS 700CX penile prosthesis are a significant advance in reliable, low-morbidity surgical therapy for impotence.
authors.affiliation: Department of Urology, Stanford University Medical Center, California.
authors.forename: M E
authors.initials: ME
authors.lastname: Nickas
authors.forename: R
authors.initials: R
authors.lastname: Kessler
authors.forename: J N
authors.initials: JN
authors.lastname: Kabalin
mesh_terms: D000206:Actuarial Analysis; D000328:Adult; D000368:Aged; D006801:Humans; D008297:Male; D008875:Middle Aged; D015917:Penile Prosthesis / Q000009:adverse effects / Q000706:statistics & numerical data; D011474:Prosthesis Design; D011475:Prosthesis Failure; D015203:Reproducibility of Results; D012189:Retrospective Studies; D016019:Survival Analysis