Have a lil pup who I think has a small bone deformation. His elbows are pointed outward where as it makes his paws close together , which gives him a hard time running and keeping up with other pups. I have him on calcium pills for his bones and it seems he was loosened up a bit not not much. I decided that if I took him on some walks with more exercise it might help a bit but after awhile he slows down and have trouble walking again. Any advise would be great