[UConnJulie]

Hmmmm ... well, honestly in your situation without examining your wrist in person, there is no way to really know exactly what is going on because your anatomy is altered. Have you seen a competent physical therapist?

If you do notice that it is always onset after sleeping, perhaps you are sleeping on it in a strange position. You might do well with sleeping in a splint to keep it in a neutral position.

Also, I would always do wrist range of motion exercises as part of my warm up. A good one is to lace your fingers together, then roll your wrists forward (alternately) and then backward, maybe 10 reps in each direction.