My bitch did it when she was young did it in the November and wasn't let off till April . Never moved her for 6 weeks helped her outside in the garden to do her business and basically was her legs Then gentle lead walks round the village and a gradual increase in exercise. She didn't get let off te lead for 6 month! first time off nailed a bunny and she aint had a problem since, I think an operation should be last straw