Topic: Discomfort when sitting
As many of you know my husband had very severe weight loss. One of the consequences of this was that he had no fat on his buttocks and thighs. He was literally skin and bone. When he sat down, because he had no cushioning he was very uncomfortable. His coccyx ('tail bone' at the base of his spine) had no protection and just to sit for a short time was difficult and painful. Ordinary cushions, rings etc didn't help.
I found a shop that sells support for the back and found a firm cushion with a hole where the coccyx is and it was fantastic. We could go out to eat, to the cineams and even just sitting watching television became possible again.
I'm posting this to help anyone dealing with the same problem as we were looking for a solution for ages and only found this by accident.