Answer:
I think the "your masticular (jaw) bone to your skull."
Step-by-step explanation:
"Examples include the fibrous joints of the skull sutures and the cartilaginous epiphyseal plate. A joint that allows for limited movement is amphiarthrosis. An example is the pubic symphysis of the pelvis, the cartilaginous joint that strongly unites the right and left hip bones of the pelvis."
Put simply, an amphiarthroses joint is a joint with more limited movement.
your wrist to your fingers - very movable
your cranium to your spine. - pretty moveable
So that is why I think it is your masticular (jaw) bone to your skull! Hopefully this is correct and helps, have a nice day! :D