Study Summary

61 patients with rotator cuff tears were randomized to receive rotator cuff repair and insertion of patch-type atelocollagen (n=31) or conventional rotator cuff repair (n=30). The primary outcome of interest was the constant score. Secondary outcomes of interest included retair rate, visual analog score (VAS), range of motion, American shoulder and elbow surgeons score, University of California, Los Angeles score, and Korean Shoulder Score. Outcomes were assessed preoperatively and at 2, 3, 6 and 12 months postoperatively. There was a significantly lower retear rate in the atelocollagen group and the Signal noise quotient significantly decreased between 6 months and 1 year in the atelocollagen group. No significant difference in any other outcomes assessed.