We bought an female Indian Runner duck. We had her home for 2-3 days and then she developed a bad limp. Took her to the vet who said she had sprained toes, keep her quarantined and give anti-inflammatory meds every other day for 3 days. After 2 weeks no better, still limping. Joint above foot looks swollen-vet says it takes time and to keep quarantined. Any suggestions-such as splinting?