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Main characteristics of included studies.
| Patients | |||||
| Study | Year | Study type | RA | FH | Robot type |
| Meng et al | 2019 | retrospective | 30 | 30 | TiRobot |
| Sheng-jun et al | 2019 | prospective | 26 | 23 | TiRobot |
| Xiao-dong et al | 2019 | retrospective | 63 | 65 | TiRobot |
| Yanxiang et al | 2017 | retrospective | 20 | 36 | Universal Robots |
| Yi et al | 2016 | retrospective | 20 | 18 | TiRobot |
