Elbow PainGolfer's Elbow? Tennis Elbow? They are both painful, common reasons for elbow discomfort. Dr. Neal Chen, an orthopedic surgeon at St. Mary Medical Center says in golfer's elbow the pain is on the medial elbow. If the discomfort is on the lateral elbow, it's tennis elbow. Both involve loss of elasticity of the tendon, which can happen with overuse and age.