You may want to ask the white coats about getting Max some Cosequin. It works very well for stiff legged kitties. I sometimes do insulin shots for a very crabby cat when her owner is out of town, and a year ago Jesabelle was using the whole house as her litterpan. I watched the cat try to walk and it was so obvious she was a hurting unit! Very obese kitty, and Anne had litterpans that were too small for the cat to bend into. UTI was ruled out and if it kept up the way things were, Jesabelle was coming close to having her life ended! I suggested to Anne that the litterpans be much bigger, and Jesabelle was put on Cosequin daily and all has been problem free since! Now if only Anne didn't have to go on business trips! The cat is no picnic to give shots to!