yes they are, but this is not one, like i said toribash is hard enuf to learn lets not make it more complicated... also the joint would just look stupid with the new addition, and adding a joint that controls movement A (say normal contraction and extension) and a joint that controls movement B (what this guy suggested, ability to move the wrist up and down) would just be dumb looking, and don't you dare say merge them into one joint because that would just be impossible to use and it would look retarded.