I was diagnosed with complex tear of medial meniscus last oct by mri. i twisted recently. i want surgery. dr didn't order new mri. is this standard?

No: I would think that before you had surgery, you should have a new MRI, not one that was done almost a year ago.

New 1 not necessary: Having a torn meniscus is like being pregnant… You have it or you don't. Since your MRI already showed you have a tear, you should've had surgery then. Now it might be more torn, but you still need surgery. You're orthopedic surgeon would not need a new MRI scan… He would just proceed with the operation that you should've had after the first MRI.