Why is my shoulder making a popping and grinding sound?

Popping Shoulder: Painless popping in the Shoulder is not an uncommon thing with active people. If this causes repetitive pain or discomfort go see a Orthopaedic Shoulder Specialist so that X-rays and a proper exam can be performed. Many times therapy, an injection, and NSAIDS can be a simple solution for shoulder pain. Hope this helps. Take care. Joe Wilson.