You asked: "How was Jesus really crucified, through His wrists or palms?"
You may begin to read here: (187:2.0), which is the accounting of this terrible event in the history of this world. You will find details here that you have never heard before, including the details of just how our beloved Savior was so brutally crucified.
Thanks for the question. This is hardly happy reading, but it IS how it happened. And, it's good for people to know if they have that curiosity.