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Abstract

Volume 15, Issue 4 (July 2013) 15, 567–570; 10.1038/aja.2012.172

Three-dimensional mapping and comparative analysis of the distal human corpus cavernosum and the inflatable penile prosthesis

Tariq S Hakky1, Daniel Ferguson2, Philippe E Spiess1, Paul Bradley1, Tom F Lue3 and Rafael E Carrion1

1 Department of Urology, University of South Florida, 2 Tampa General Circle, Tampa, FL 33602, USA
2 3D3Solutions, Burnaby, BC V5J 5M8, Canada
3 Department of Urology, University of Southern California San Francisco, 400 Parnassus Ave, San Francisco, CA 94143, USA

Correspondence: Dr RE Carrion, (rcarrion@health.usf.edu)

Received 19 November 2012; Revised 16 December 2012; Accepted 20 January 2013; Advance online publication 1 April 2013

Abstract

The intricate anatomy of the corpus cavernosum in both the flaccid and tumescent state has not been fully elucidated. We report our experience using a three-dimensional (3D) scanner to reconstruct cadaveric casts and compare them with 3D images of two prototypes of penile prosthesis. Two different models of the Titan Coloplast inflatable penile prosthesis were analyzed using a 3D scanner. The first was the standard model and the second was a newer model with a rounder silicone tip. Two cadaveric phalluses were harvested using Smooth-Cast 300Q polyurethane molding. The molds were excised and scanned along side the penile prosthesis. 3D scans were completed and analyzed using Leios Mesh software, and GOM Inspect software. The 3D scans demonstrated the mean human corporal radii 2 mm from the distal tip to be 36.51 mm (36.01–37.0 mm), which is an obtuse angle. The standard Titan penile prosthesis spherical radius at the same level was 202.52 mm, while the new silicone tip prosthesis had a radius of 139.33 mm. 3D mapping further demonstrated the trajectory of the cavernosa appeared curvilinear and the distal ends appeared blunt. The use of cadaveric cavernosal molds in combination with the 3D scanner allowed us to accurately image the corpus cavernosum for the first time. Our findings suggest that anatomically accurate corporal tips appear to be relatively blunt and that the new Titan silicone tip penile prosthesis more closely resembles the human corporal tip.

Keywords: corpus cavernosum; penile prosthesis; three-dimensional analysis

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Asian Journal of Andrology CN 31-1795/R ISSN 1008-682X  Copyright © 2023  Shanghai Materia Medica, Chinese Academy of Sciences.  All rights reserved.