Abstract:Abstract: Objective To compare clinical effect between groups performed debridement only under arthroscopy and group which combined with double pulley suture in the treatment of II degree rotator cuff tear on bursa side. Methods We collected 68 cases of rotator cuff tear on bursa side (level II degree) from June 2014 to June 2016. All cases were divided into debridement group (34 cases) and combined with suture group (34 cases). The variable value of VAS, Constant score, ASES and ROM was detected pre-operation and post-operation respectively between the two groups. Results All cases were followed-up 6 months to 22 months (mean 13.3 months). Debridement group: the VAS score was reduced from (7.35 ± 0.83) preoperative to (1.12 ± 2.11) at the last follow-up point, while ASES score was elevated from (48.88 ± 12.19) preoperatively to (90.80 ± 16.10) at the time of the last follow-up points, Constant score from (48.38 ± 18.02) preoperatively to (88.02 ± 11.77). About ROM, lift on ante flexion from preoperative (78.4 ± 25.6)°to postoperative (168.20 ± 10.20)°, lift on abduction from preoperative (73.30±32.10)° to (171.00 ± 7.50)° postoperatively. With suture group: the VAS score was reduced from (8.04 ± 1.72) preoperative to (1.05 ± 1.88) at the last follow-up point, while ASES score was elevated from (51.99 ± 14.10) preoperatively to (88.78 ± 10.10) at the time of the last follow-up points, Constant score from (49.56 ± 18.49) preoperatively to (87.12 ± 12.06). About ROM, Lift on ante flexion from preoperative (75.40 ± 33.50)° to postoperative (170.50 ± 12.00)°, lift on abduction from preoperative (70.50 ± 25.50) ° to (169.50 ± 20.70) °postoperatively. Both groups have good effect after surgery, the postoperative variable value has statistical significance compared to pre-operation (P <0 .01), but the difference between the two groups has no statistical significance (P > 0.05). The number of re-tear was 6 cases in debridement group about 17.6% while suture group 1 case, about 2.9%. Conclusion Not only group performed debridement under arthroscopy but also group which combined with double pulley suture can all obtain satisfactory clinical effect in the treatment of II degree rotator cuff tear on bursa side, the latter may have certain advantages in preventing further rotator cuff tear, but it is not the main factors of clinical patients satisfaction.