A 78-year-old male presents to clinic 4 weeks after left total shoulder arthroplasty. He has not been wearing his sling and reports that he developed increased pain after slipping in the shower. He used the arm to catch himself from falling. On examination, he can flex the shoulder to 70 degrees, limited by pain. Active external rotation with arm at the side is 50 degrees and active internal rotation is 5 degrees. Passive external rotation is to 80 degrees. A radiograph of the left shoulder is shown below in Figure A. What other complaint is the patient most likely to have?