From the first day we brought Molly home we noticed she hopped on her left hind leg on and off but didn't seem in any pain at all. I thought it was probably luxating patella but I had her checked by the vet the day I brought her home actually and both her knees were very stable. We didn't know if the rescue would do anything and I was worried another owner would not look after her like I would so we adopted her anyway - gimpy leg an' all. Being prepared for whatever came of it, surgery or whatever.
After the adoption, we have had her leg investigated further. She has had further thorough manipulation of all her joints, Xrays of both knees, hips and spine and all checked out completely clear, nothing wrong at all. I was so relieved. She shows no sign of pain on manipulation or movement and runs round like crazy, jumps, does not limp at all on that leg and only hops when she is at a certain speed (like an extended trot or canter - if you are a horse person) but is normal at other gaits. It is very strange.
The only thing that we noticed was when she had that horrible hair cut in the beginning we noticed there was a scar on that left hind leg. So bad that no hair grew around it. Who knows what happened to her and I dread to think she was just left in pain at that horrible place she came from. My vet thinks it could be that she never used the leg for so long due to the injury and being cooped up at a puppy mill she just needs use the leg again. There could also be scar tissue in there or contracted muscles. I am to exercise her as much as possible and get her muscles built up in that leg - she loves her walks and seems to be improving. The hop may never go away completely tho. She is in no pain so that's all that matters .
It just makes me sad that Molly is just one in thousands that have to endure such conditions at puppy mills with no medical care at all :( I am glad she doesn't have to worry about that any more.