For those who want to read up on cruciate disease in dogs; Veterinary Partner has a couple of good articles on the disease and the various options:

https://www.veterinarypartner.com/Co...S=0&C=0&A=1975
https://www.veterinarypartner.com/Co...S=0&C=0&A=3547

In my clinic I offer a number of different procedures; generally the TTA and TPLO is better suited for large dogs (>45 lbs) than the extra capsular repairs. Faster return to function and, at least in my experience, better and more consistent outcomes.