Save Oakley's Life: Support His Amputation

Update orig goal was met but there were fees I did not know about . He is at vet now This is not easy to ask for help but I have a 7 month old male cat that I love . I rescued him when he was tiny and nursed him to health , he has always had a stump as a back leg (not sure what happened ) but now that he is grown the bone has come through his skin and sticks out . He was taken to the vet this morning and given meds but needs it amputated . I can not afford this at this time . I have received a pledge for 500 but only 414 remains as his meds were covered . If anyone can help with any Oakley and I would be greatly appreciate it . The. Et wants him to have surgery on 4/17 but if not the next date is 4/30 . I am posting pics of estimate and email pledge . Thank you