Table 1.
Basic characteristics of the included studies.
| No. | Author/year | Country | Study | Level of evidence | Sample size (RATKAs) | Sex |
Age (years) | Follow up | BMI (kg/m2) | LOS (days) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | Female | ||||||||||
| 1 | Richards et al., 2022 (CR) | USA | Retrospective Cohort (Single surgeon) | LOE Ⅲ | 107 | 18 (16.8%) | 89 (83.2%) | 65 ± 10.3 | 16.4 ± 5.6 Months | 30.5 ± 5.5 | 1.7 ± 1.2 |
| Richards et al., 2022 (PS) | USA | Retrospective Cohort (Single surgeon) | LOE Ⅲ | 107 | 56 (52.3%) | 51 (47.7%) | 66.7 ± 9.6 | 19.2 ± 6.3 Months | 32.9 ± 6.2 | 1.5 ± 0.8 | |
| 2 | Z. Li et al., 2022 | China | RCT (multicenter) | LOE Ⅰ | 73 | 13 (17.8%) | 60 (82.2%) | 68 ± 8 (30–86) | 3 Months | 26.9 ± 3.26 (20–38.5) | NR |
| 3 | C. Li et al., 2022 | China | prospective cohort (Single surgeon) | LOE Ⅱ | 26 | 9 (34.6%) | 17 (65.4%) | 66.4 (50–76) | 3 Months | NR | NR |
| 4 | Smith et al., 2021 | USA | retrospective cohort (Single surgeon) | LOE Ⅲ | 120 | 48 (40%) | 72 (60%) | 68 (40–86) | 17 (Min:12) Months | 31.2 (18–47) | 2.1 |
| 5 | Shaw et al., 2021 | USA | prospective cohort | LOE Ⅱ | 260 | 84 (32.33%) | 176 (67.7%) | 67.2 (41–91) | NR | 32.4 (16.2–48.3) | 1.04 (0–5) |
| 6 | Samuel et al., 2021 | USA | retrospective cohort | LOE Ⅲ | 85 | 38 (44.7%) | 47 (55.3%) | 63.3 ± 8.8 | Min 12 Months | 31.7 ± 5.9 | 0.48 ± 0.59 |
| 7 | Nickel et al., 2021 | USA | prospective case series | LOE Ⅳ | 105 | NR | 62.4 ± 8.5 | NR | 30.6 ± 6.1 | NR | |
| 8 | Mitchell et al., 2021 | USA | retrospective cohort (Single surgeon) | LOE Ⅲ | 148 | 72 (48.6%) | 76 (51.4%) | 65.9 ± 8.2 | Min 12 Months | 30.6 ± 5.3 | 1.18 |
| 9 | Marchand et al., 2021 | USA | retrospective cohort (Single surgeon) | LOE Ⅲ | 80 | 51 (64%) | 29 (36%) | 67 ± 8 (46–84) | Min 24 Months | 31 ± 7 | NR |
| 10 | Held et al., 2021 | USA | retrospective cohort (Single surgeon) | LOE Ⅲ | 111 | 37 (33%) | 74 (67%) | 70 | Min 24 Months | 30.1 | 2 |
| 11 | Blum et al., 2021 | USA | prospective case series (Single surgeon) | LOE Ⅳ | 106 | NR | 69.6 ± 8.3 | Min 24 Months | 29.8 ± 4.1 | NR | |
| 12 | Kim et al., 2020 | South Korea | RCT (Single surgeon) | LOE Ⅰ | 724 | 132 (18.2%) | 542 (81.8%) | 60 ± 7 (49–65) | 13 (10–15) years | 28 ± 9 (26–36) | NR |
| 13 | Yeo et al., 2019 (KA) | South Korea | RCT (Single surgeon) | LOE Ⅰ | 30 | 5 (16.7%) | 25 (83.3%) | 72 ± 5.5 | Min 8 years | 26.1 ± 5 | NR |
| Yeo et al., 2019 (MA) | South Korea | RCT (Single surgeon) | LOE Ⅰ | 30 | 3 (10%) | 27 (90%) | 74 ± 5.2 | Min 8 years | 26.9 ± 2.1 | NR | |
Data presented as mean ± SD (range) whenever possible. RATKA: robotic assisted total knee arthroplasty, BMI: body mass index, LOS: length of hospital stay, CR: cruciate retaining, PS: posterior stabilized, RCT: randomized controlled trial, NR: not reported, Min: minimum, KA: kinematic alignment, MA: mechanical alignment.