Review Question - QID 7605

A 20-year-old collegiate pitcher has had a 5-month history of shoulder pain while throwing, decreased velocity, and difficulty with location of his pitches despite multiple attempts at rest. He reports no traumatic event. Examination with his throwing arm abducted at 90 degrees reveals external rotation to 110 degrees and internal rotation to 70 degrees when compared with his nonthrowing shoulder which has external rotation to 95 degrees and internal rotation to 85 degrees. He has a positive O'Brien's sign, positive modified Jobe's relocation test, full rotator cuff strength, no obvious muscular atrophy, and no scapular winging. Radiographs of the affected shoulder show no abnormalities. What is the next most appropriate step in management?