I posted this back in November 2009; thought I'd repost for this conversation as well:
I have had good results from anal stimulation, but I cannot confirm or deny if this has helped me in the erection department. Prior to my RP I did engage in prostate stimulation and it was very enjoyable (recommend every guy do this!). Post surgery I went for several months before I even thought about anal stimulation, and then I tried it. Sure, it wasn't like having a prostate, but it still felt really good, enhanced my orgasm, and massaged my nerves (the same nerves I want to heal for ED). I spoke to my doctor asking him directly if this activity would enhance my nerve recovery, inhibit my nerve recovery, or not matter at all. He stated that there have been no studies about the impact of this activity on the nerves and the only answer he could give me was that, "if it feels good, then do it!". So I do.
Now in my opinion, I think massaging any part of the body that's trying to heal is beneficial, and I like to think this activity is helping me.
Regarding the use of anal stimulation and vibrators, the toys come in many types and you should find what works best for you. Some of the tricks I learned over the years that worked for me:
1) Firm jelly material with no sharp edges (stay away from the hard plastic or glass; they scare me)
2) I don't use the wedge shaped toys as they keep popping out (that part of the body is designed to push stuff out)
3) Look for ones with nubs as this enhances your ability to hold it in without much effort
4) A nice handle at the end is useful. Keeps it accessible and allows my wife to move it around and enhance my big O
As for the vibrators, you can buy toys that vibrate, but some of my best results are to insert the anal toy, and then use a very strong vibrator against the handle... kind of shakes everything up and gets the blood flowing.
In closing, I can confirm two thinks about anal stimulation post RP, it feels good and it certainly hasn't hurt anything!!! With everything Prostate Cancer and, or ED has done to us, anything we can do to bring more excitment and feeling into the orgasm is worth it.
Robotic RP Sept 2008
ED, but still hopeful (meds work well)