I've had tremendous success with the program described here:
PROTOCOL FOR 3 CYLINDER MEDICAL VED
How successful this program is seems to depend a great deal with how severe a case you're trying to address, the worst don't seem to benefit a great deal if at all. My case was probably mild to moderate with both a curvature and the hour glass shape - two distinct symptoms that may be present alone or together as in my case. I went through the 26 week program twice beginning almost three years ago and managed to correct all of the curvature and probably 80 to 90 of the hour-glassing. The first time through I notice enough of a change that a second time through modified based on my observations seem a good move which it turned out to be. A lot of the people who use(d) the program get an expensive prescription pump, but I was able to accomplish the same with a combination of high quality cylinders and a good quality hand pump for a lot less and without the hassle of dealing some closed minded doctor who want immediately go cutting.
It's also worth mentioning, since this is in the "healthy penis" area, after completing the program I found numerous other benefits to the program as well.
Starting around age 40 we're told as men that changes to our penises related to decreasing cardiac efficiency are "normal" and we should expect, amongst other things, less firm erections and changes in appearance including size. Indeed at age 48 I was seeing most of these as well. After completing the program for the second time I have no hesitation saying that nearly all of these so called age related changes have been virtually reversed. Not only are erections more frequent, firmer but the cylinders provided a measuring device that documented the return to a full 7.5 inches I used to sport as a younger man. Even when not erect the appearance is apparent to not only me but my wife.
I did notice throughout the process that the positive effects seemed to diminish after prolonged periods of not pumping, not unlike exercise or lack of on the rest of the body, and I now pump to 2-4 time a week to maintain and I'm in tip top shape as a result.
If you have any questions about my experience don't hesitate to ask.