A manometry study can be performed on either end to measure muscle strength. I am assuming that your doctor will be doing an anal manometry to test the strength of your anal sphincter and thereby assess your ability to retain stool until you empty your pouch. Your doctor will insert a small probe that measures muscle strength and the exam is not painful. This test is not used to test for adhesions.

I've had it and they insert something like a balloon filled with a little bit of fluid and test how you can hold it inside your j-pouch. I think they vary the amount of fluid that is in the balloon thing. It is a quick and painless test of your sphincter muscles. Nothing to worry about. Easiest test I've ever had involving my colon/j-pouch and I had cuffitis when they did the test.