Yeah, follow your doctors advice. I had a similar plate screwed into my wrist when I broke it. My doctor explained that having the plate installed meant that the wrist could be back in full service much sooner than one that had to heal together without it in a cast. I was even allowed to lift weights in something like two weeks! I was carefully riding around the neighborhood in about one week, but waited several more before taking on my 13 mile commute in traffic. It took me a couple of months of PT to get the repaired wrist back to full mobility and strength.