Tennis Elbow, also known as Lateral Epicondylitis, is a tendinopathy of the muscles at the outside of the elbow. Although the name suggests that it is caused by tennis, only 5% of all tennis elbow cases are related to tennis! The most common causes of this condition include computer use, heavy lifting, repetitive twisting of the forearm and vibration. It is characterized by outside elbow/forearm pain with activities such as gripping, lifting even just a cup of coffee, pouring a glass of juice and twisting.