Experimental Study Of Augmentation Phalloplasty Using The Tunica Vaginalis Grafts In Bilateral Albuginea Of Penile Corpus

Objective To study the effect and complications of augmentation phalloplasty by implanting autogenous tunica vaginalis grafts into bilateral albuginea of penile corpus.Methods 5 mongrel dogs underwent augmentation phalloplasty with bilateral autogenous tunica vaginalis grafts. The increase in volume of the corpora cavernosa was achieved by applying autogenous tunica vaginalis grafts to longitudinal openings made bilaterally in the albuginea along the whole length of the penile cavernous corpora. Each dog performed measurement of perimeter of penile cavernous corpora in a flaccid state and during erection and dynamic infusion cavernosometry (DIC), either in the preoperative or in the postoperative period. Histology of the penis was examined using hematoxylin and eosin stains.Results The average increase in perimeter of penile cavernous corpora is 21.1% in the erectile state and unobvious in the flaccid state 3 months after surgery. There were no statistically significant differences for preoperative versus postoperative cavernosometric parameters. No other severe complications occurred during the postoperative period. The grafts had mild inflammatory reaction and fibrosis with apparent reformation of the tunica albuginea over the patch site.Conclusions The augmentation phalloplasty technique with bilateral autogenous tunica vaginalis grafts was proved to be effective and reliable with few complications and specifically be conspicuous for increasing the volume of the erectile tissue during erection.