| 组别 | 术前 | 术后1个月 | 术后3个月 |
| 开放组 | 7.04 ± 0.77 | 1.96 ± 0.72 | 1.11 ± 0.77 |
| UBE组 | 7.02 ± 0.78 | 1.76 ± 0.88 | 1.02 ± 0.78 |
| t值 | 0.08 | 0.97 | 0.47 |
| P值 | 0.94 | 0.33 | 0.64 |