That was an informative post, 2Bullmastiffs- thank you.
Today I called the orthopedic surgeon at the top medical center here in the city and had along conversation about how to proceed. Basically, a physical exam, probable x-rays (which will not show the tear per se, but will indicate changes in the joint pointing to a ACL tear/damage), and a discussion about surgical options. Yes, she is a surgeon and will push surgery, I get that. But she is good, probably the best I could get in the city (she did the arthroscopic OCD shoulder surgery on him when he was a year old, and he's been doing well since then.)
Shortly after, I had a long phone conversation with another doctor (human) who has since turned away from allopathy and practices holistic only. She is an avid dog lover and uses naturopathy and homeopathic treatment and care for all her dogs. I have been friends with her for awhile, and she has saved me great time and expense by helping me treat Mateo for a variety of issues that have come up in a holistic manner, rather than running to the vet. I am a strong believer in the holistic view, even though I come from a whole family of physicians. She is adamant in avoiding surgery- especially since it has been many weeks since he first started showing symptoms (they were so subtle, I missed the onset of a huge, dramatic incident.) She has given me a protocol, which includes serious rest (very limited activity), acupuncture (I have talked with a highly reccomended one and may use him at some point), as well as some targeted supplements and a few other suggestions.
AB- you are right about the arthritis; it's going to happen at this point, whether I do the surgery or not. That, however, can also be managed.
So. I have a lot more research and soul-searching to do...so far, we are taking it slow, Mateo is doing well, no real limp when walking , but "gimpy" and a bit stiff when he gets up from sleeping. But walks are very short, and we are doing a lot more hanging out and people-watching, which he has always loved doing...
And I am okay, AB, thank you so much for asking. Trying to absorb everything, and keep from sliding off the deep end...