Ah GEEZE!!!!! Poor Yukon! Poor Kristina!!
Did they use ansethesia when they took the X-rays? I personally hesitate. Especially with Pyrs because of their super low metabolism. But sometimes it's necessary to get a good read. Othewise the pup will tense up and they can't get a correct diagnosis.
I am extreemly fortunate to have Roger Pitts as my Vet. He's one of the best ever in my mind. When Rain had a possible torn ACL Roger gave her a complete exam. Then he referred her to an excellent Orthopdic Specialist. They were extreemly careful with the anesthesia and gave only to effect. But were able to get what they needed to rule out a tear. The first thing we did before the X-ray, however, was to run a Lymes test. (Negative)
I do think that an MRI would possibly be advisable. That would have been my next step had Rainbow not responded to rest and Homeopathic Therapy. I even made an appointment with the U of M Vet School just in case.
I would suggest, as did Paige, that you sign up on Pyrnet. They're a fantastic group when it comes to our Pyr Bears. It's
www.pyrnet.org to sign in. There's a wealth of knowledge in these people.
You may also want to contact Dianne Mingas @ bluepyrs@comcast.net She's one fantastic lady and works tirelessly on the GPCA Health Committee.
Here is another site that might give you some insite.
http://www.woodhavenlabs.com/cruciates.htmlSending Hugs and Prayers that you can get to the bottom of this. Feel free to PM me anytime. And my email is listed. Take Care Kristina!
Kisses to Yukon. (& Sis Yiska too!)