Table 1 The characteristics of the extracted research data
Author | Publication year | Study location | Study year | Group | N | Age (year), mean (SD) | Male, (male/female) | Number of total screws | Number of qualified screws | Number of misplace screws | Operative time (min), mean (SD) | Blood loss (ml), mean (SD) | Other outcomes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cecchinato R | 2019 | Italy | 2015.1–2016.10 | A B | 14 15 | 34 (15.3) 26 (17.2) | 2/12 1/14 | 297 243 | 224 160 | 73 83 | UC | UC | ④⑤ |
Chen H | 2015 | China | 2014.8–2015.3 | A B | 20 23 | 52.3 (8.75) 55.4 (8.75) | 9/11 12/11 | 118 122 | 108 99 | 10 23 | UC | UC | ④ |
Garg B | 2018 | India | UC | A B | 10 10 | 15.5 (3.8) 16.6 (4.9) | 3/7 4/6 | 137 126 | 125 104 | 12 22 | 235.3 (55.7) 298.5 (59.3) | 630 (227.6) 840 (533.3) | ④⑤ |
Guo F | 2017 | China | UC | A B | 13* | UC | UC | 37 37 | 32 23 | 5 14 | UC | UC | ④⑤ |
Jiang L | 2017 | China | 2012.6–2014.12 | A B | 25 29 | 43.5 (10) 46.9 (7.25) | 16/9 18/11 | 100 116 | 96 103 | 4 13 | 171.84 (22.46) 182.76 (28.4) | 309.20 (33.41) 322.07 (26.51) | ①③⑤⑧ |
Liu K | 2016 | China | 2011.10–2015.3 | A B | 10* | UC | UC | 48 104 | 45 82 | 3 22 | UC | UC | ⑥ |
Merc M | 2013 | Slovenia | 2011–2012 | A B | 9 10 | 59 (5) 62 (12) | 4/5 5/5 | 54 54 | 50 45 | 4 9 | 143 (113) 176 (90) | UC | – |
Merc M (2) | 2013 | Slovenia | UC | A B | 7 8 | UC | UC | 30 36 | 26 21 | 4 15 | UC | UC | – |
Merc M | 2017 | Slovenia | 2011–2013 | A B | 11 13 | 60.6 (6.7) 62.8 (11.7) | 5/6 6/7 | 72 72 | 66 43 | 6 29 | UC | UC | ①②③ |
Pan Y | 2018 | China | 2014.1–2017.6 | A B | 20 17 | 16.3 (1.8) 16.5 (1.4) | 7/13 6/11 | 396 312 | 354 234 | 42 78 | 283 (22.7) 285 (25.8) | UC | ⑥ |
Pu X | 2018 | China | 2013.6–2016.6 | A B | 25 24 | UC | 11/14 14/10 | 100 96 | 98 72 | 2 24 | 106.1 (10.9) 138.2 (21.7) | 185.0 (59.5) 311.0 (87.4) | ①③⑧ |
Wu C | 2015 | China | 2011.2–2013.11 | A B | 18 24 | 37.2 (25–57) 38.7 (27–56) | UC | 144 192 | 131 135 | 13 57 | 133.3 (15.9) 162.2 (21.7) | 735.1 (127.7) 843.2 (147.8) | ②④ |
Zhang Y | 2015 | China | 2013.12–2014.12 | A B | 10 10 | 11.9 (4.2) 12.6 (3.8) | 3/7 2/8 | 167 165 | 138 98 | 29 67 | 163.5 (53.7) 164.0 (48.7) | 455 (447) 415 (389) | ①⑦ |