My 5 year old Shih Tzu had luxating patella surgery about 2 years ago on her right back leg. I could visibly see the knee popping out and she was lifting it a lot when she walked. We had an orthopedic surgeon do the surgery (who does them on a regular basis) and she recovered great. I left her at the Vet's for the 2 weeks following the surgery (being the most crucial time) so she wouldn't move around a lot (because I knew I couldn't cage her myself). Over the years she has started lifting that same leg more often when she walks (skipping on 3 legs) which makes me think its bothering her again. Has anyone had similar problems after having this surgery? I've discussed this matter with her Vet and she states its normal for her to do that. Should I get a second opinion? Any insight would help. Thanks!