COZEN'S TEST FOR TENNIS ELBOW / LATERAL EPICONDYLITIS Alright, let's dive into the assessment of tennis elbow! In lateral epicondylitis, the tendons of the extensor carpi radialis longus brevis become reactive due to mechanical overload (and possibly other non-mechanical intrinsic factors which can affect the tendon like age, sex, genetics, general health and psychosocial factors) The Cozen's test is designed to maximally stress these two tendons by a maximal resisted contraction. Up until today