Abstract:Abstract: Objective?To compare mid-term clinical outcomes of arthroscopic rotator cuff repair using improved-press-fit double-row technique vs sutuer-bridge technique for patients of large rotator cuff tear.?Methods?A retrospective study was conducted on patients of full thickness large rotator cuff tear with arthroscopic rotator cuff repair between December 2015 and November 2016, 50 patients (22 males, 28 females) as group A were treated by improved-press-fit double-row technique, the mean age of the group A was 62.58 years (range 51 to 76 years). Another 50 patients (27 males, 23 females) as group B were treated by sutuer-bridge technique, the mean age of the group B was 60.72 years (range 46 to 75 years). Two groups were compared in suture fixation time, life quality score (EQ-5D). Pre- and post-operative visual analog pain scale scores (VAS), the range of motion (ROM), University of California at Los Angeles (UCLA), and American Shoulder and Elbow Surgeons (ASES) were used for clinical and functional evaluations, and compaired between groups.?Results?Compared with sutuer-bridge technique, using improved-press-fit double-row technique could shorten the suture fixation time markedly. The mean duration of follow-up was 30.90 months (range 24 to 36 months). At the time of latesd follow-up in patients of group A, the mean subjective pain score (VAS) was (1.54?±?0.78), the mean active forward flexion was (155.60?±?10.31) °, whereas the mean external rotation at the side was (32.70?±?8.02)°. The mean UCLA score improved to (33.36?±?3.43), the mean ASES score improved to (82.22?±?8.57), the EQ-5D index was improved to (0.73?±?0.02). In patients of group B, the mean subjective pain score (VAS) was (1.38?±?0.72), the mean active forward flexion was (153.50?±?9.75)°, whereas the mean external rotation at the side was (34.70?±?6.02)°. The mean UCLA score improved to (34.30?±?2.47), the mean ASES score improved to (84.36?±?7.78), the EQ-5D index was improved to (0.72?±?0.01). There were significant differences respectively in each group (P?0.05), but no significant differences between two groups. No re-tear occurred in both groups.?Conclusions?Both improved-press-fit DR and suture-bridge technique were effective in arthroscopic large rotator cuff repairing. Compared with suture-bridge technique, using improved-press-fit technique can shorten the operation time, reduce costs, and is much easier to process.