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Is it due to surgical interruption of blood flow.. having to overcome too much resistance from the implanted inflation tubes, or ?

The cylinders of the implant displace tissue that are cells that when filled with blood make an erection possible. Like little sacks that that when filled increase in size. The process involves increased blood flow into the penis and reduced blood flow out. So the tissue that make an erection possible is gone after implant surgery.

newbie443 wrote:The cylinders of the implant displace tissue that are cells that when filled with blood make an erection possible. Like little sacks that that when filled increase in size. The process involves increased blood flow into the penis and reduced blood flow out. So the tissue that make an erection possible is gone after implant surgery.

Normally nothing is removed during the implant, simply pushed aside. I still have "normal" erections just not full on hard-ons, more of a good semi. I can tell the difference because I am rounder, more girth, then with pumping up. But I'm sure a lot depends on what kind of shape your dick was in before the surgery, mine was good, just would not stay hard.
Andy

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Happy Toy wrote:

newbie443 wrote:The cylinders of the implant displace tissue that are cells that when filled with blood make an erection possible. Like little sacks that that when filled increase in size. The process involves increased blood flow into the penis and reduced blood flow out. So the tissue that make an erection possible is gone after implant surgery.

Normally nothing is removed during the implant, simply pushed aside. I still have "normal" erections just not full on hard-ons, more of a good semi. I can tell the difference because I am rounder, more girth, then with pumping up. But I'm sure a lot depends on what kind of shape your dick was in before the surgery, mine was good, just would not stay hard.
Andy

"Normally" depends on the procedure your surgeon uses. I interviewed with one who stated categorically that the corpus cavernosum tissue is routinely removed. Now, I admit that he was a resident studying under the surgeon who would do the work and he may have misspoken, but he was at the end of his urology rotation and I asked for confirmation of what he said. That essentially made me put his hospital at the bottom of my list of potentials.

But it is true that even in the best of situations, the tissues that provide erections (if a man still has any residual erectile capacity) are usually made less capable of filling, getting engorged and producing an erection. I did read one study wherein this was examined. Among a small cohort of patients, about half retained some (implant uninflated) erectile capacity after implantation and one actually was able to occasionally get an erection sufficient for coitus. But this is vanishingly unlikely and not to be counted on in any way, shape or form.

The mechanism is thought to be a result of the implant creating a restriction in venous outflow. Essentially a partial cure of venous leak. But only partial cure and not to be expected unless you are just blind lucky.

In other words, don't expect any retention of residual native erectile capacity. Implant was an option ONLY because your native erectile capacity was insufficient for coitus and NEVER expected to get good enough ever again.

This, in no way affects corpus spongiosum. It is usually not affected by the implant nor very much by the operation.

Lost Sheep wrote:

Happy Toy wrote:

newbie443 wrote:The cylinders of the implant displace tissue that are cells that when filled with blood make an erection possible. Like little sacks that that when filled increase in size. The process involves increased blood flow into the penis and reduced blood flow out. So the tissue that make an erection possible is gone after implant surgery.

Normally nothing is removed during the implant, simply pushed aside. I still have "normal" erections just not full on hard-ons, more of a good semi. I can tell the difference because I am rounder, more girth, then with pumping up. But I'm sure a lot depends on what kind of shape your dick was in before the surgery, mine was good, just would not stay hard.
Andy

"Normally" depends on the procedure your surgeon uses. I interviewed with one who stated categorically that the corpus cavernosum tissue is routinely removed. Now, I admit that he was a resident studying under the surgeon who would do the work and he may have misspoken, but he was at the end of his urology rotation and I asked for confirmation of what he said. That essentially made me put his hospital at the bottom of my list of potentials.

But it is true that even in the best of situations, the tissues that provide erections (if a man still has any residual erectile capacity) are usually made less capable of filling, getting engorged and producing an erection. I did read one study wherein this was examined. Among 50 men, about half retained some (implant uninflated) erectile capacity after implantation and one actually was able to occasionally get an erection sufficient for coitus. But this is vanishingly unlikely and not to be counted on in any way, shape or form.

The mechanism is thought to be a result of the implant creating a restriction in venous outflow. Essentially a partial cure of venous leak. But only partial cure and not to be expected unless you are just blind lucky.

In other words, don't expect any native erectile capacity.

This in no way affects corpus spongiosum, which is usually not affected by the implant or very much by the operation.

I have been looking for the study where they compared "erectile function" after implantation but I cannot find it - do you maybe have a link on hand ?

thank you

mr.skin wrote:
I have been looking for the study where they compared "erectile function" after implantation but I cannot find it - do you maybe have a link on hand ?

thank you

I will try to find it again and post here, with a PM to you if/when I do. Might be a day or two.

Found it:

https://www.ncbi.nlm.nih.gov/pubmed/12904800

mr.skin wrote:Found it:

https://www.ncbi.nlm.nih.gov/pubmed/12904800

Cool,

This article might be of interest also. "Inflatable penile prosthesis implantation without corporeal dilation: a cavernous tissue sparing technique." There are two summaries I found:
Summary is here, but it does not mention retention of erectile capacity, only post-op pain:
https://www.ncbi.nlm.nih.gov/pubmed/20092840
This one does, but only one line:
https://www.sciencedirect.com/science/a ... 4709029395

The PDF of the entire article is available, but you will have to search on the article title,
Inflatable penile prosthesis implantation without corporeal dilation: a cavernous tissue sparing technique.

FMLFML85 wrote:

Happy Toy wrote:

newbie443 wrote:The cylinders of the implant displace tissue that are cells that when filled with blood make an erection possible. Like little sacks that that when filled increase in size. The process involves increased blood flow into the penis and reduced blood flow out. So the tissue that make an erection possible is gone after implant surgery.

Normally nothing is removed during the implant, simply pushed aside. I still have "normal" erections just not full on hard-ons, more of a good semi. I can tell the difference because I am rounder, more girth, then with pumping up. But I'm sure a lot depends on what kind of shape your dick was in before the surgery, mine was good, just would not stay hard.
Andy

@ Andy
When you pump up, does your erection seem fuller if your also aroused/stimulated?

I would say to some degree yes, but in no way is my "pumped up" erection like the erections I had naturally, or the ones I got from trimix. Before I started having problems, my dick was very full and round, now it is kind of "D" shaped, but very hard. I think that this is where I lost most of the 6.5" girth I had before my implant. But even with this loss I would not go back to a dick that I could not depend on when it counted! The other plus is that I have a very nice flaccid size now, 4", that I have never had before. I love my implant!