Watch the video of Yuki, a rescued Husky who had a Femoral Head and Neck Excision (i.e cut away his hip joint) a couple of years ago. http://youtu.be/vmem9NiTlmU He was left with weak back legs, overused his front end, weak in his lower back. He had 12 weeks of physio which included a fun home exercises therapy program designed just for him – here he is at the end before being discharged. Sorry I always forget to take before video but take my word for it he was weak behind and sore too.