Hi !
so their is a new version of the parasaur. After a week of trying to resolve this issu by re-modeling my muscle etc... the solution was more simple : juste add a little bit of deltamush on my fat pass painted over the hole.
I've also try something about the dermal pass, I've combine my alembic animation with my simulation after my fat pass, and simulate my dermal over the merged model ! So I can get the wrinkle everywhere even over my animation pass.
I didn't get the same result than ghost vfx over the leg, I know that, but this is a really different muscle and skeleton anatomy so the my leg pivot is a little bit lower than their dinosaur.