I am not a doctor, but speak from experience.
I suffered a tibial plateau fracture, where one side sheared off, and the other side crushed.
My leg was screwed, pinned, and plated, back together.
The final surgery, (#6) was to remove the pins, plates, and screws. Primarily, to relieve discomfort, and to help avoid catastrophic (the doctor's words) fracture at a later date.
Believe it or not, most of your bones flex when stressed, and when they are prevented from doing that by pins and plates, it is very uncomfortable. And, when prevented from flexing, they can snap like a branch over a rock.
I sure hope I never break that one again!
My advice - follow the doctor's advice.....