Hello there,
Well there is absolutely no reason to worry...right now i am rehabilitating a similar case and he had exactly the same problem post cast removal...just have a proper rehabilitation...for a month now...and your hand should be at pre fracture status in a month...with proper stretching,moving,and appropriate wt movents.
Can consult me if the problem persist or have any other queries.
Regards.
Next Steps
Dr Raviraj Francis
MPTh(Rehab),MPT(MSk).UK