I have been trying to find out if anyone else has experienced anything like this. Got up the wrong way one morning, and twisted my left shoulder. Developed a lump on the collarbone after this happened. Went for x-rays, and was told it was spasmodic torticollis, calcification on tendon, Arthritis, Tendonitis. The pain is horrible, and its all in the left shoulder as the lump is located right in the same place. They did not see a dislocation, but the lump seems to be like something is dislocated. Nobody has answers.