Wow, j'espère que tu vas guérir rapidement! Au moins tu as des kayaks que tu peux utiliser
If it helps, Adam and I both have 194 paddles for down river, and Adam bought a 191 for playboating since he was having shoulder issues. The shorter the paddle the less stress on the body. Ultimately, I think it's a personal preference thing like paddles for canoeing. Some like long paddles, some like short paddles.