Surgery for Ølaf ?

Hello! 
I came here since this is my last resort. 
1 year ago I adopted my cat ølaf from the shelter because he’s owners didn’t want him anymore, together with he’s sisters elsa and Anna they were dropped off and the owners were never seen again.  I was super excited to be able to adopt Olaf since I’m a sincere animal lover with a degree in animal healthcare. After a while ølaf’s leg started to dislocate and It became worse because he is a pretty ‘chonky’ boy. 
the doctors told me to try to make him move more but this only results in him being in pain because of his leg. We have come to the point That he really needs surgery. we and the vets tried everything but ølaf is pretty ‘stubborn’ to move and he just loves to eat and laze all day… 

im asking everyone to help us make ølaf great again! He’s such a pretty, cute, kind and fun cat and every animal deserves to chance. please help us ???
 

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