Statistical analysis The statistical analysis will be completed by statisticians using the SPSS 19.0 statistical software (IBM Corp., Armonk, NY, USA) in line with the intention-to-treat principle. Intergroup comparison for the excellent rate according to the Neer classification system will be performed using the chi-square test. The operation time, intraoperative blood loss, postoperative hospital stay, fracture healing time, visual analogue scale scores, and SF-36 scores will be compared using the Mann-Whitney U test. A value of P < 0.05 will be considered statistically significant.