Hi Cameron. My younger brother has a knee problem too, though probably not as serious as yours. Years ago during his gym class, his knee suddenly gave out and he unintetionally dove head-first into the volleyball net. He described it as "like being clotheslined by a professional wrestler". His classmates thought he was faking it. Jerks. Oh, and sorry for my late response, as I'm only on briefly during the morning.

Hi Andrea. I hate hurting my tailbone, though I've never broken it. It sends a shockwave up my spine to my brain. I'm sorry to hear you can't sit for long. Thats my favorite activity lol.