SPSS 24.0 (IBM Corp., Armonk, NY, USA) was used for data analysis. The chi-square test and Fisher's exact test were used to analyze sex, education level, diagnosis, and side among the three groups. One-way analysis of variance (ANOVA) was used to analyze age, BMI, length of hospital stay, LLD, FO difference, preoperative and postoperative FJS, and WOMAC score, and the least significant difference (LSD) method was used for comparison. Spearman correlation analysis was used to determine the relevance between the weight difference of the three groups and PRO. P < 0.05 was considered statistically significant.
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