Implantation of Model AMS 700 Penile Prosthesis: Long-Term Results

Abstract

The American Medical Systems inflatable penile prosthesis has undergone periodic design changes to improve device reliability and longevity while maintaining a high degree of patient and partner satisfaction. Previous data reported from this institution did not consider these frequent design changes and the assessment of device reliability incorporated consecutive cases involving several different designs. This study was designed to evaluate followup data on 120 patients who received the model 700 inflatable penile prosthesis, permitting assessment of device reliability of a single design. Two groups were evaluated: a pre-fix group of 57 patients and a post-fix group of 63 patients. Over-all, 11.7 per cent of the total group required revision (21 per cent of the pre-fix and 3.2 per cent of the post-fix groups). Careful life-table analysis of the results with the current model 700 device (post-fix) reveals that this model has a 97 per cent chance of maintaining normal mechanical function for 3 years. Further assessment of these patients in the future will provide additional data on long-term reliability of this design.

Clinical Experience with 80 Inflatable Penile Prostheses

“…As far as infectious complications are concerned, we also report slightly higher results than those in the litera ture [3,10,12,14,19,[21][22][23][24][25][26][27][28] (table 6). Noticeable is the fact that the 3 early infections were easily diagnosed, whereas the 5 others were diagnosed intraoperatively after surgical exploration for chronic painful penile syn dromes which evolved over several months.…”

“…However, the initial enthusiasm for this type of treatment has been moderated by the onset of mainly mechanical and infectious complications [8][9][10][11][12][13][14][15][16], Only 45% of our patients had a perfect mechanical result (table 2). This result is inferior to those reported in the literature [16][17][18] for the Mentor [9,19,20] and AMS [10] prostheses. It is important, however, to notice that, unlike numerous authors for whom dysfunction is a com plication requiring surgical revision, even minor func tioning anomalies such as incomplete deflation of the device were considered a dysfunction in our series.…”

Erectile Dysfunction: Anatomical Parameters, Etiology, Diagnosis, and Therapy

“…Furlow et al [13] conducted long-term studies on the implantation of model AMS700 penile prosthesis. Wilson et al [58] reported on 11 years experience with the inflatable penile prosthesis (Table 7).…”

Review: Modern treatment of erectile dysfunction

“…In patients who have primary placement of penile prosthesis, the re-operation rate for mechanical failure is around 5% over 5-10 years. 40,41 …”