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Clin Shoulder Elbow > Volume 19(3); 2016 > Article
Clinics in Shoulder and Elbow 2016;19(3):130-136.
DOI: https://doi.org/10.5397/cise.2016.19.3.130    Published online September 30, 2016.
Clinical and Structural Outcomes of Arthroscopic Intraarticular Knotless Fixation for Upper Subscapularis Tendon Tears: A Preliminary Report
Nam Su Cho, Hee Seok Shim, Ju Hyun Nam, Yong Girl Rhee
Shoulder & Elbow Clinic, Department of Orthopedic Surgery, College of Medicine, Kyung Hee University, Seoul, Korea. nscos1212@empas.com
Received: 27 September 2015   • Revised: 3 December 2015   • Accepted: 24 December 2015
Abstract
BACKGROUND: A novel technique for the repair of tears of the upper subscapularis tendon?intraarticular knotless fixation?has been introduced recently. The purpose of this study was to evaluate the clinical and structural outcomes of arthroscopic intraarticular knotless fixation for the treatment of upper subscapularis tendon tears.
METHODS
We retrospectively analyzed the clinical and radiological outcomes of 27 patients who underwent arthroscopic intraarticular knotless fixation for upper subscapularis tendon tears. Finally, a total of 10 patients who could participate in at least a 6 month follow-up of magnetic resonance imaging evaluation and in a least 1-year follow-up on an outpatient basis were enrolled in our study. The mean age at the time of operation was 60.7 years, and the mean duration of follow-up was 14.7 months. Two patients had concomitant tears of the supraspinatus tendon and 8 patients had concomitant tears of the supraspinatus and the infraspinatus tendons.
RESULTS
The clinical and radiological outcomes improved after the patients had undertaken arthroscopic intraarticular knotless fixation. The mean visual analogue scale score for pain during motion improved from 6.7 preoperatively to 1.4 at the final follow-up (p<0.001). The mean Constant score improved from 59.3 preoperatively to 79.6 at the final follow-up, and the mean the University of California at Los Angeles score, from 21.7 to 30.2, respectively (p<0.001 and p<0.001). The upper subscapularis tendon tear was healed in every patient except one (90%), for the patient had suffered from a postoperative trauma that resulted in a retear.
CONCLUSIONS
We found that arthroscopic intraarticular knotless fixation gives good clinical and structural outcomes for the repair of upper subscapularis tendon tears. Arthroscopic intraarticular knotless fixation provided such a reliable and efficient restoration of the subscapularis tendon footprint that we anticipate it will become a widely-used procedure for upper subscapularis tendon tears.
Key Words: Shoulder; Subscapularis; Arthroscopy; Intraarticular knotless fixation; Treatment outcome


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