Lateral epicondylitis is a common upper extremity disease that occurs with tenderness in the lateral epicondyle, the common attachment point of the wrist extensor muscles, and pain during resisted wrist extension. The main purpose of treating lateral epicondylitis is to reduce pain and increase functionality, but there is no accepted standard treatment method. The purpose of this study is to compare the effectiveness of kinesio tape and high intensity laser in the treatment of lateral epicondylitis.

Lateral epicondylitis is a common upper extremity disease that occurs with tenderness in the lateral epicondyle, the common attachment point of the wrist extensor muscles, and pain during resisted wrist extension. It is usually a non-inflammatory tendinopathy of the extensor carpi radialis and extensor digitorum comminis. Calcific tendinitis and/or partial tears in the wrist extensor muscles may accompany this condition. It is most common between the ages of 30-60 and its prevalence has been reported as 1-1.7% Although the underlying cause is mostly unknown, activities that involve excessive use of wrist extensors and supinators are thought to be the most important cause of lateral epicondylitis .The main purpose of treating lateral epicondylitis is to reduce pain and increase functionality, but there is no accepted standard treatment method. Non-surgical treatment approaches such as patient education physiotherapy applications, manual therapy, laser therapy, splinting, taping, exercises, massage and local injection, as well as oral or topical nonsteroidal anti-inflammatory drugs are frequently applied. Kinesio tape, which is frequently used in musculoskeletal system injuries, is flexible, mimics skin and has a water-resistant structure. Kinesio tape creates a pumping system by pulling the skin up in the area where it is applied, thus increasing the skin space, increasing blood and lymph circulation, and creating analgesia and proprioceptive sensory input by reducing the pressure on pain receptors . There are scientific studies showing that kinesio tape application reduces pain and increases functionality and grip strength in patients with lateral apicondylitis. It is stated that high-intensity laser treatment can quickly create photochemical and photothermic effects in deep tissue. For this reason, collagen production in tendons is stimulated and can increase blood flow, vascular permeability and cell metabolism. As a result of all these events, tissue healing begins and painful stimuli disappear. It has been shown that high-intensity laser reduces pain and increases functionality and grip strength in patients with lateral epicondylitis. In the literature review, no randomized controlled studies were found comparing high-intensity laser and kinesio tape applications in patients with lateral epicondylitis

Inclusion Criteria:

• Patients over 18 years of age.
• Those who have pain with palpation applied to the lateral epicondyle
• Patients with pain in resisted extension of the wrist and/or middle finger
• Pain during static stretching applied to the wrist while the elbow is extended
• The complaints must last at least three months
• Not having received treatment in the last three months.

Exclusion Criteria:

• Pregnant and breastfeeding women
• History of fracture or surgery in the elbow area
• Detection of calcific tendinitis on plain radiograph of the elbow
• History of neurological disease
• History of osteoporosis, malignancy, hemophilia
• Rheumatoid arthritis and other inflammatory diseases
• Cognitive problem