2017 paper showing results from Precice 2 [doesn't look very promising]

Edit Post

It's by Dr. Lee: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5654310/

The scary part to me was reading that 14 Precice 2 nails out of 46 had a "breakage of rotation coupling". I am not very sure what that means, but the obvious meaning is that the two broken bone segments might not stay rotationally aligned.

So while doing femur lengthening, if this complication happened, if you "twist" your tibia (with your hands), the upper part of the femur might not also twist equally?

I hope I am wrong.

Edit Post

I read through the paper again and the defect above was categorized as a "problem" (there are 3 grades of issues: "problem", "obstacle" and "complication" in that increasing order of severity). So maybe it wasn't that big a deal.