Hi,
I'm sorry to read about your problems. It is sad that the urologist never warned you about this.
I'm a male with a neurological condition. To determine the cause of my problems, a smalle piece of a nerve was taken from my left foot. As a result I had several years of little to no sensation in my foot. I now again have sensation but the foot is still not OK.
I also underwent surgery to remove a necrotic testicle. Due to the severeness it wast removed through the scrotum and left open to heal. It took at least 2 years for sensations to return to normal. For a hernia repair about 5 years later on the right side, it took only a few months to feel like things were normal.
The good news is that your partner might get normal sensation back. Since every person heals differently it is hard to determine when sensation and how much sensation will return.
Good luck,
Ron
I've had the same surgery with the same problem. So far I have had a bit - just a bit - of improvement by spending "skin-to-skin" time with my wife each day in order to get an erection. This is the "use it or lose it" technique. Plenty of erections may be helpful. At least I think I'm improving slightly and the theory of exercising those blood vessels and working the penile nerve branches seems to make sense. (Plus, it's fun to smooch naked every day.)