Effect of High-intensity Laser Therapy on Supraspinatus Tendon Elasticity

All patients participating in the study will be included in the physiotherapy program. Physiotherapy program consist of hot-pack (for 15 minutes), ultrasound (Continuous ultrasound, for 5 minutes, 1-MHZ 1.5W/cm2, a 5-cm ultrasound head on the subacromial region),TENS (for 20 minutes with the BTL 4000 combined device) and exercise program (Stretching exercises for the rotator cuff, rhomboid muscles, levator scapula, serratus anterior and pectoaral muscles and strengthening the muscles around the shoulder with a resistance exercise band selected in a color appropriate to the patient's strength).

High intensity laser will be applied using the BTL-6000 (BTL Company, UK) device. The first 5 sessions will be applied to the painful area by making circular movements from the center to the outside for 100 seconds at a power of 10W and a dose of 10 J/cm2 (analgesic effect). The last 5 sessions will be applied to the painful area with linear movements at 4W power and 100 J/cm2 dose (biostimulation effect) for 10 minutes and 25 seconds.

In sham application, the patient will be positioned on the treatment stretcher and the device will be turned on. The guide light of the high-intensity laser device, which gives the same color as the laser light, will be applied to the subacromial region in circular movements from outside to inside and from inside to outside.