[sganow]

If they knee cap is not moving then it is not luxating patella. Luxating patella means the knee cap moves out of place (on its own). Our 3 year old yorkie, Maggie, has grade 3 LP and has only really had one bad episode with it. When I move her leg/knee I can feel her knee cap moving side to side and it lightly pops some too.

I suspect the problem your dog is experiencing is not luxating patella, but something else instead. If the knee cap is not moving out of place, I wouldn't really want to have them keep trying to get it to move. They need to look someplace else. It could be leg perthes or it could be a torn or inflamed tendon, partially torn acl, or something else. I hope you get it figured out and that it is nothing serious.