This shower chair with wheels is a must after knee surgery.
It allows you to wheel around the bathroom and sits high enough so you can reach the sink.
It rolls right over the toilet so you don't have to hop on one leg to get to the toilet. The arms are sturdy which make getting up and down easy on your shoulders and one leg.
I don't use it in the shower, but you certainly could with ease if you chose to, as long as your shower doesn't have a raised entry.
I bought this for my Dad. He's at a home and unable to stand. It's given him a little bit of his dignity back. Went together fast. Best of all it was affordable.