Results ( mean SD ) for preoperative group @/group @ and postoperative group @/group @ were as follows , respectively : @ @ / @ @ ( P = @ ) and @ @ / @ @ ( P = @ ) for the VAS score , @ @ / @ @ ( P = @ ) and @ @ / @ @ ( P = @ ) for the Constant score , and @ @ / @ @ ( P = @ ) and @ @ / @ @ ( P = @ ) for the ASES score .