When we speak of a tennis elbow?
The tennis elbow, epicondylitis radialis humeri also called, is a painful irritation. In the tendons of the extensor muscles of the forearm, which originate above the elbow joint on the outer side of the humerus have are irritated by overuse. You get the smallest micro-cracks, which can be extremely painful and can lead to inflammation. This leads to severe pain in the elbow.