Lateral Epicondylalgia is commonly referred to as tennis elbow and incorrectly referred to as lateral epicondylitis. Lateral Epicondylalgia is a non inflammatory condition which affects the origin of the extensors of the wrist. It is thought that compression of the extensor tendons over the lateral epicondyle of the elbow results in this degenerative tendon condition. Compression of the tendons over the lateral epicondyle results in changes in the underlying stucture of the tendon resulting in a matrix of tendon substance that is poorly arranged. These changes allow the ingrowth of small blood vessels which also contain nerves into regions of the tendon which normally do not have blood vessels. These nerves are stimulated by using the arm and stressing the tendon with activities such as tennis. In order to decrease pain in the region specific exercises need to be performed which cause changes in the tendon structure through a process called mechanotransduction. In order to resolve this issue these exercises must be performed consistantly over extended periods normally in the region of 3-6 months.