Dear friend, welcome to HCM!
The bladder and numbness
, foot drop
issues are due to nerve root
dysfunction after the surgery.(Sacral nerves
Either swelling (oedema) or damage of nerves can cause this. Low CSF pressure is common after surgery and if there is a leak.
Do you mean these symptoms were not there before the surgery?
Is there any fever
or pus near operated area?
If new (I feel you mean this), please be guided by your neurosurgeon for the course to be taken.
If only oedema, it can get better with time and treatment.
Otherwise a surgical consultation will help.
I hope to have addressed your query well.
Take care and please keep me informed of your progress.
I hope to have answered your query satisfactorily.