Hello and welcome to tootsie. She is a little sweetheart.
This little bean has been referred for hindlimb lameness and spondylosis. She has had an issue for a little while and so the muscle has also wasted.
This is a complicated case. It may require significant investigation as the vets are also unsure of why she is lame. There were a few findings, but none really fit the bill to cause this lameness.
Having done our investigation, we found some areas that needed work and treated these. We have also set her and mum up with a home excercise regime to start rebuilding her confidence and strength in the limb. Her lameness level constantly varies so there is lots to take into concideration. With strength in the limb she may feel happier to reply in it once again.
Keep up the good work mum amd Tootsie. We will have you feeling better soon!