The elbow is often affected by diseases localized at the point of muscle attachment resulting from chronic or acute overload. The lateral epicondyle is exposed to a greater extent, and the term “epicondylitis” usually refers to both chronic and acute forms of the disease. The focused radiation of the Nd: YAG Arthro module has a positive effect, reducing pain and improving the functional consistency of the joint in sports patients suffering from chronic epicondylitis. Comparison of the clinical data obtained on the LASEST laser device with those published in the literature shows that treatment with Nd: YAG Arthro laser with special characteristics allows one to obtain results that are not inferior in effectiveness to other treatment methods. For a deep effect on the tissues in the treatment of epindicolitis in the laser complex, a “packet” method of radiation adjustment is used, which make a complex effect on damaged ligaments and thus avoids overheating of tissues. “Packets” of short pulses with synchronization in duration from 50 to 300 μs allow you to get excellent clinical results even for a small number of procedures.