Tennis Elbow - Tennis elbow, also known as lateral epicondylitis, is caused by overusing the muscles while in the forearm. This causes pain and tenderness to the outer part of the elbow. It really is widespread among the tennis players but can have an affect on anybody who does repetitive https://www.theorthopaedicandpainpractice.com/why-is-my-elbow-swollen/?_gl=1*xbbxlb*_up*MQ..&gclid=Cj0KCQjwkt6aBhDKARIsAAyeLJ2krYJSOuy5mZksrNqH-VDjQwW1ScD49yD8BUWysDG6u6bJPCSbXVUaAuCPEALw_wcB