Innovations in Malleable Penile Prosthesis

madman

Super Moderator
Abstract

The malleable penile implant is often considered an inferior device to the three-piece inflatable penile prosthesis implant. Nonetheless, the malleable prosthesis has its unique advantages such as lower cost, easier to perform and fewer mechanical complications than inflatable prostheses. Furthermore, its role can be extended to patients with issues relating to poor manual hand dexterity, those undergoing a salvage for infection prosthesis and as an emergency surgical measure in patients presenting with acute ischaemic priapism. Over the past few decades, there have been numerous design and technological advancements to improve overall clinical efficacy, mechanical durability, axial rigidity and device concealability of malleable penile prostheses. The following article provides a narrative review of the six major contemporary malleable penile prosthesis devices in the commercial market, namely, the Coloplast Genesis prosthesis, the Boston Scientific Tactra prosthesis, the Zephyr ZSI 100 and 100 (female-to-male) FTM devices, the Rigi10 prosthesis, the TUBE malleable prosthesis and the Shah prosthesis and evaluates the published outcomes. Appropriate patient selection and strict counselling regarding what to expect with malleable prostheses coupled with adherence to safe surgical principles are paramount to ensure excellent clinical success and patient satisfaction rates.




Key Takeaways:
  • Design and technological advancements have improved malleable penile prostheses.
  • Malleable rods are preferred in certain situations due to simplicity and lower risk of malfunction.
  • Malleable prostheses are significantly cheaper than inflatable devices.
  • Implantation of malleable prostheses is easier and faster with minimal device preparation.
  • Malleable prostheses can benefit patients with poor manual hand dexterity, infection, and acute ischaemic priapism.
  • Malleable rods can be exchanged for an inflatable prosthesis later for greater patient satisfaction.
  • Future research may focus on advanced materials for better concealment and flexibility.
  • No direct comparative study exists for clinical efficacy, durability, or safety outcomes among malleable prostheses.
  • Proper patient selection and counseling are crucial for successful outcomes and patient satisfaction.
 

Attachments

Figure 1. Commercially available malleable penile prosthesis devices. (a) Coloplast Genesis prosthesis. (b) Boston scientific Tactra prosthesis. (c) Rigi10® prosthesis. (d) Promedon TUBE malleable prosthesis. (e) Zephyr ZSI 100 (malleable) prosthesis. (f) Zephyr ZSI 100 FTM prosthesis. (g) Shah prosthesis
Screenshot (27025).webp
 

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Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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