I have to admit, I love sick ideas like this
However, I like the film surrounding the sick idea to actually have something good about it. It doesn't have to be a good film, just some utter cheese will do.
This looks like it's a poor film due to the fact there's no actual plot built around the sick core idea.
The biggest issue is the driving force for me. If the doctor was cutting off the heads of the end three and attaching the bodies together under the control of the front person (including nervous system) then I could see the point. You have created a "new" creature (or at the very least extended a human being).
THAT is an interesting experiment to pursue
This though is just a sick form of erotica more than anything else. Skat follow the leader if you will. It's tough to see where the goal is for an intelligent doctor to do this as a "sick science experiment". The "segments" are all individually intelligent. Let's face it, the guy is just into extreme bondage!
So added to the fact the core premise is flawed, it's surrounded then by piss poor acting and the most basic kidnap/escape plot.
The two minutes where the centipede is seen are probably the highlight, it's cool to be honest - but it's just two minutes out of ninety, and I've seen five seconds of those good two minutes in the trailer already.
So, good idea in a film about bondage or something, but not as the core premise of a "medical" horror.
Did I think about this too much?