There is often wasting of the hind limb muscles as well. (vetmed.umn.edu)
A key to maintaining a DM dog's quality of life and slowing the progress of the disease is maintaining rear limb muscle tone. (healthypets.mercola.com)
We also worked on stretching and massage for her tight hind limb muscles and after a couple weeks, she was much more comfortable and acting like herself again. (dog-swim.com)