The key difference between golfer’s elbow and tennis elbow is that in golfer’s elbow, the inflammation happens in the medial condyle while in the tennis elbow, the inflammation happens in lateral condyle.
Enthesitis refer to inflammatory processes happening at the sites of insertion of the tendons to their bony locations. Both golfer’s elbow and tennis elbow are forms of enthesitis. To be specific, golfer’s elbow is the inflammation at the point of insertion of the wrist flexors into the medial condyle whereas tennis elbow is the inflammation at the point of insertion of the extensors of the forearm into the lateral condyle.