Hi, my dog had the lateral suture repair last July. He is a very active 40lb lab mix, the orthapedic surgeon said that TPLO is overkill for alot of dogs. All the surgeries rely on scar tissue to build up, re-hab and confinement are the key to success. The lateral suture is a little more delicate in the recovery stage, you have to be very careful, no running, no jumping, just walking very slowly for the first several weeks. After the stitches came out he was cleared for swimming,re-hab work and longer walks. He was allowd to be out of the crate right after surgery as long as he was calm, that did not work so he stayed in the crate for 2 weeks. At 4 monthes I started letting him have some off-leash time, supervised, at 9 monthes I let him go. He is not an agility dog but he is very energetic he can run and do spins with the best of them.
I would suggest you see an orthapedic surgeon, some regular vets don't seem to be able to diagnose ACL injuries, at least mine didn't, he actually told me that my dog was limping because of his back. I rested him a couple for monthes with no results and then took him to an orthapedic. In the 2 monthes that his knee was unstable he had already started to get arthritis. She diagnosed his knee in 2 seconds.
The surgery cost us 1,300, that did not include the re-hab. You can also join Yahoo Ortho-dogs, great info! Good luck! Cindi