Introduction: Lateral epicondylitis in tendinopathy of common forearm extensor muscles tendon. It is typically recognized by pain on lateral epicondyle of elbow, which is worse, when wrist is in dorsal flexion. The main reason for lateral epicondylitis is overuse of extensor muscles, and it is found when load is repetitive. Treatment of lateral epicondylitis is mostly symptomatic. It is focused on reducing pain and improving strenght and flexibility of muscles. Purpose: Purpose of diploma work is to find out the effect of extracorporeal shock-wave therapy on the pain at lateral epicondylitis. Methods: Diploma work is review of nonfiction. Databases are Cinahl, PubMed, Medline and ScienceDirect. Results: Acute effect on pain was for 13 % better in case of extracorporeal shock-wave therapy, than in a control group, while chronic was 16%. Focused and radial waves were used. When focused were used, acute imrovement of pain was 21%, while chronic was 37%. I case of radial waves acute effect was 18%, while chronic was 31%. Discussion and conclusion: Results show improvement in pain by using the extracorporeal shock-wave therapy, but in comparison with control group is it not crucial. Frequency of use of radial and focus waves is surprisingly almost the same. In the future more of researches with control group and more strictly conditions will be needed.