Well.....urology and orthopedic nursing are kind of two separate areas?
In an acute care hospital a bed side orthopedic nurse would work with traction, various orthopedic equipment/machines, assess limbs (as well as the whole body). I have only occasionally floated to orthopedic units. Look over the all-nurses orthopedic nursing section under specialties.
And honestly I'm not sure what a urology nurse would do? Assist with cystoscopies? Work in a dialysis unit? Maybe the hospital you will interview at has a floor for renal patients? Post kidney transplant patients? Continuous peritoneal dialysis? I'm really reaching here!
Sorry I'm not much help. Still kind of confused about your job interview
? Maybe you could go to the facility and walk through the unit or ask a nurse educator at the facility or get some one to give you a job description before you interview?