<human>: Yesterday I tripped on a plastic shovel and braced myself on a rock wall. I think I heard my shoulder pop out and back into place. I screamed and winced in pain for 20 minutes. After an ER visit last night, I learned that I did not break or dislocate anything. I am still experiencing severe pain on my upper left arm on the outside more toward the shoulder. What can I do? What did I injure? How long will it take to heal? Thank you.
<bot>: Hi, there! Your description lead me think about shoulder subluxation and spontaneous reposition. The joint capsule is sprained and it causes pain. Try not to move Your shoulder. Use a sling for 1 week and apply painkiller gel (Ibuprofen). Ultrasonography will be valuable to reveal tendon tears (rotator cuff), other option is MRI scan. Subluxation pain will cure after 1 week, but uncertain inner damage can be painful for longer time. I hope this helps