Can ultrasound be used to detect sphincter muscle injuries or dysfunctions?

Yes: Ultrasound is one of the modalities used to test for anal sphincter anatomy. If you are experiencing fecal incontinence it is one of the tests that may be used to help evaluate the cause.

Not the best tool,: With your history it seems like you have undergone many tests and studies. Although a US may be helpful it is not first line. A good and thorough exam is most important and a CT scan may be more useful to diagnosis an injury. Pressures can also be measured in a lab/radiology setting to help establish dysfunction. Follow with your Gastroenterologist and Surgeon. The very best of luck to you.

Yes: Talk to your doctor about further testing. Good luck