If you play a contact sport, engage in strenuous physical activities, or have ever reached out to cushion a fall, you may be familiar with the popping sound and immediate pain that follows hyperextension of your elbow. It is the popping sound that helps differentiate “elbow hyperextension” from other elbow injuries such as “tennis elbow.” As one of the elbow joints (the “humeroulnar joint”) bends backward, pain and the popping sound are likely to be accompanied by swelling, redness, stiffness, loss of arm strength, limited mobility, and muscle spasms. Once the diagnosis has been made, mild to moderate cases of elbow hyperextension may be treated with rest, ice, elevation, compression, and an elbow brace that immobilizes the arm and encourages healing.