Retroflexion of the urinary bladder associated with a perineal hernia in a female cat

A case of retroflexion of the urinary bladder into a bilateral perineal hernia in a female domestic shorthaired cat, three weeks postpartum, is reported. The bladder was repositioned and a cystopexy performed. A pelvic ostectomy was also carried out in order to alleviate the narrowing of the pelvic canal caused by an untreated acetabular fracture. Bilateral perineal herniorrhaphy was performed.