Hello Melissa, I really think your vet should consider a spinal compression injury.. Many times it is hard to see these on xray. We have seen several of these in our time-- the ones treated aggressively folowing the injury regained the mobility, those not treated immediately never regained the loss. With quiet, steroid therapy and a gradual rehab ( water therapy etc.) ferrets can gain back mobility in compression injury cases. This would be my FIRST concern. Alicia D www.ferretwise.org [Posted in FML issue 4548]