en Orthopedic Surgery Orthopedic Surgery Original Research Original Research <p> <strong>Abstract </strong></p><p> <strong>Background:</strong> Rotator cuff tear is one of the most common causes of shoulder </p><p> complaints in the elderly. Based on the severity and patient's condition, a variety of </p><p> methods applies to manage the tear and surgery is an important method, which could </p><p> be done by open or arthroscopic technique. The current study aimed to investigate </p><p> and report short-term results of arthroscopic repair of complete rotator cuff tears. </p><p> <strong>Methods:</strong> This was a cross-sectional study on 183 patients who underwent arthroscopic </p><p> surgery to repair rotator cuff tear in three different hospitals of Tehran between </p><p> January 2003 and August 2006. Of all patients, 107 cases included in our </p><p> study, which had a complete rotator cuff tear, and at least one-year follow up record. </p><p>  89 patients (56 male and 33 female) attended assessment sessions and were evaluated </p><p> by UCLA(University of California, Los Angeles) Shoulder and Elbow Scoring System, </p><p> pre- and post-operatively, and acromioplasty was performed in 83 patients. </p><p> <strong>Results: </strong>With a mean age of 53.2 ± 15.8 (32-71) years, the average UCLA score </p><p> was 11.3 before the surgery and 31.4 post-operatively. There were 11 patients with </p><p> excellent scores, 62 good, 11 fair, and 5 poor scores. 9 out of 11 cases with excellent </p><p> score and 34 out of 62 with good score were younger than 55 years however, 13 cases </p><p> were older than 60 years amongst 16 fair or poor scores. </p><p> <strong>Conclusions:</strong> Arthroscopic repair of complete rotator cuff tear would cause a significant </p><p> improvement in a short-term period and results are better in younger patients, </p><p> through the UCLA scoring system.</p><p>  </p> rotator cuff, arthroscopy, shoulder 59 63 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-1-33&slc_lang=en&sid=1 Hamid Reza Aslani hraslani@yahoo.com 20031947532846001787 20031947532846001787 Yes Shahid Beheshti University of Medical Sciences. Hamed Vahedi 20031947532846001788 20031947532846001788 No Orthopedic Surgeon and Medical Researcher. Zohreh Zafarani 20031947532846001789 20031947532846001789 No General Practitioner and medical researcher.