Hi welcome to YT!
My yorkie only has LPs that will be fixed in the future. However, I have seen the CCL surgery performed many many times. It is the quickest of all the knee surgeries. Basically the surgeon will be using a thick type of "fishing line" to act as a artificial ligament. As for the LP surgery, MPL, the surgeon will deepen the groove that the knee cap sits in and he might possibly have to cut the bone and pin it in a different place to align the ligaments.
There is great success with this surgery if done by a board certified orthopedic surgeon. I wouldn't go anywhere else. The sooner this knee is fixed the better. It will only get worse if not fixed and the other knee will probably start to go as well because it will be overcompensating for the painful knee.
hope this helps
Kellie
__________________ Kellie  and  Morgan |