@irremeable@goblin.technology i am thinking: https://my.clevelandclinic.org/health/diseases/shoulder-impingement-rotator-cuff-tendinitis i would suggest seeing a doctor if youre not able to use your arm at all. when i did this to myself, i had to get a cortisone shot to get the inflammation down to even start doing some exercises (and they are super easy ones). https://www.citypt.com/blog/shoulder-impingement-exercises/