Background: Shoulder disorder are common musculoskeletal disorders, one in every 5 persons experiences shoulder problems at some time in his / her life. It is a phenomena of mechanical compression of the rotator cuff against the anterior under surface of the acromion and caracoacromial ligament particularly during arm elevation. Objective: This study was conducted to investigate the effect of low level laser therapy versus acupuncture like TENS in chronic shoulder impingement syndrome on intensity of pain, joint ROM and Functional level of shoulder. Subjects: 30 adult male patients, their age range from 25-40 years, subjects were classified to 2 groups Group A: 15 patients received LLLT and conventional treatment (ultrasound, selective strengthening and stretching exercises for shoulder joint).Group B:15 patients received AL-TENS and conventional treatment. Methods: pain intensity measured by visual analogue scale, ROM of shoulder measured by electrogonimeter and functional level of shoulder measured by shoulder pain and disability scale. Results: the study revealed that there was a significant effect of LLLT Group (A) on pain intensity level, shoulder joint ROM and shoulder functional level in CSIS, also there was a significant effect of AL-TENS Group (B) on pain intensity level, shoulder joint ROM and shoulder functional level in CSIS, but LLLT group had a significant difference and improvement in pain intensity level, shoulder joint ROM and shoulder functional level than AL-TENS group in CSIS. Conclusion: Both LLLT and AL-TENS had a significantly effect on pain intensity level ,Shoulder joint ROM and shoulder functional level in CSIS, but the LLLT group more significant effect in pain intensity level, shoulder joint ROM and shoulder functional level than AL-TENS in CSIS.
