Lost Sheep wrote:Mark1974 wrote:https://www.auajournals.org/doi/abs/10.1097/JU.0000000000003352.10
This is a study involving 1105 implants. It's only one study, but that is a big sample
2 things of significant interest to me were that
(a) median time to revision for AMS was only 2 years and average time for Coloplast was only 4 years
(b) Coloplast was twice as durable as the AMS
Again, it's just one study, but I wasn't expecting those results
Mark1974,, I think you misinterpreted the study objective (and subsequently, came to an unwarranted conclusion)
The study stated "We sought to characterize IPP component failure at time of device revision and stratify by manufacturer [American Medical Systems (AMS) and Coloplast (CP)]"
The study included ONLY devices that had revisions. Those devices not requiring revision are excluded. Those devices are the ones implanted in the vast majority of patients.
Respectfully submitted
Yes I see what you mean, but almost every IPP will require a revision.
So this practice did 76 mechanical revisions over the course of 15 years Most of what they did was primary implantation (by my math they did 829 primary implantations.) And they did 200 non-mechanical revisions
Of the 76 mechanical revisions they did they state that the median life-span of the AMS device before their revision was less than 3 years and the median life-span of a Coloplast before their revision was less than 5 years
The other 829 primary implants aren't even really relevant. If they required revisions they may have gone to other practices. I shouldn't have even mentioned the 1105 implants to begin with, because it really isn't relevant to the problem.
They are stating that of the 76 revisions they did perform these were the average life-spans before revision. And this seems to correspond with the kind of numbers I'm seeing on Franktalk
I know this is confusing and I need to find a better way to explain this