As to whether you can get hired before NCLEX, that's up to the hospital. Some places will hire you, though.
Congrats on getting an interview. Research the hospital beforehand, so you know some basic info. Smile, be enthusiastic about starting your nursing career with them in ortho. If asked a question for which you don't know the answer, please don't try to BS your way through it. Have an answer lined up on how you'd find out the answer (ask your charge RN or whatnot).
Ask if you can shadow on the unit either before or after your interview.