Did your hen ever start pooping normally? If so, what was your "cure"...? I have a very similar situation: One of my 2-3 year old hens started having chronic diarrhea (and also stopped laying) several months ago. Her comb and wattles look good, her legs look nice a glossy, her feet look healthy...
Update: We were able to consult with a vet last Thursday, and his recommendation was either amputation at the knee joint or euthanasia. As it was one of several chickens, and certainly not a prize/bread-winner, we opted for humane euthanasia. A sad but necessary choice. :(
Sorry, not sure why there are multiples of the same pic... I'm new here, so I'm sure I just did something wrong.
(Picture taken on Saturday, protruding bone not clearly visible; shows that break is near the joint)
My 3-mo-old Princess Calico was attacked on Saturday (5/12) by (we think) a raccoon. I could tell right away that her leg was broken (near the joint), but didn't realize how badly until last night.
Initially, I cleaned with warm water and wrapped in clean gauze. She was alert...