Different Surgeries for LUXATING PATELLA?

[Zanders' mom]

Hi, All. I recently took Jazzie to an orthopedic surgeon, he took xrays, unlike the previous surgeons we had gone to. He talked about the procedure to correct bilateral medial Luxating Patella (mlp). He mentioned that because Jazzies femur has a 17 degree curve to it, he would cut into her femur at an angle, (sideways V) to straighten out the bone, he would apply plates to the area, he said this would keep the patella from stretching and being loose in the future. He thinks her acl is torn in her left leg, some cartilage damage as well. He concluded that her left leg needs to be taken care of 1st and due to the degree of surgery only one leg at a time.
I imagine for those Yorkies that have LP genetically, there must be some degree of curve in the femur bone. My question to those who have had MLP surgery, has your surgeon cut into the femur (thigh bone)? Can the Yorkies leg be OK with just the common LP surgery?
The other 2 surgeons that have seen Jazzie never mentioned cutting into her femur to straighten out the leg. I have to be well informed before putting her through surgery, please share with me your experience with LP Surgery.