prosthetic testicle prosthetic testicle a prosthetic testicle is an artificial replacement for a testicle lost through surgery or injury. consisting of a plastic ovoid manufactured from silicone rubber, and either solid, or filled with a salt solution and implanted in the scrotum, a prosthetic testicle provides the appearance and feel of a testis and prevents scrotum shrinkage. it is also commonly used in female-to-male sex reassignment surgery. the list shows testicular implants available in the market in 2020. product company country of origin type of the implant torosa coloplast united states of america saline-filled testi10sf rigicon innovative urological solutions united states of america saline-filled testi10f rigicon innovative urological solutions united states of america firm polytech testicular implants polytech germany firm