Review Question - QID 5463

Figure A shows immediate post-operative radiographs of a 75-year-old patient with primary osteoarthritis. She presents 3 years later with increasing pain and weakness in the shoulder despite home physical therapy. Examination reveals limited active range of motion, with forward elevation of 80 degrees and external rotation of 50 degrees. Her deltoid function is intact. Repeat radiographs are seen in Figure B. Which treatment option would provide the best functional outcome for this patient?