[RESULTS] Results ( mean SD ) for preoperative group 1/group 2 and postoperative group 1/group 2 were as follows , respectively : 7.2 1.8 / 6.1 1.9 ( P = .02 ) and 0.6 1.8 / 0.6 0.9 ( P = .97 ) for the VAS score , 74.1 5.7 / 73.8 8.0 ( P = .87 ) and 96.3 5.7 / 95.7 4.6 ( P = .77 ) for the Constant score , and 47.0 10.3 / 50.8 14.1 ( P = .22 ) and 91.5 15.5 / 94.5 11.8 ( P = .55 ) for the ASES score .